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# Optician Certification

Your Complete Guide to a New Career

## Sitemaps

- [XML Sitemap](https://opticiancertification.org/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Antireflective coating](https://opticiancertification.org/antireflective-coating/) - Coating on the front or back of glasses lenses, which minimizes the glare for patients who are extremely bothered by glare.
- [Anti-VEGF drugs](https://opticiancertification.org/anti-vegf-drugs/) - Substances which block the action of Vascular Endothelial Growth Factor. They are effective in the treatment of choroidal neovascularisation.
- [Lenticulation](https://opticiancertification.org/lenticulation/) - The process of thinning the edges of a minus lens or centers of plus lenses using a carrier shape or change of curvature. It involves specifying an area of the lens as the 'visual area', which is the part of the lens the patient is intended to actually look through. This 'visual area' is also referred to as a 'bowl', and can be as small as 30mm. The balance of the lens has edges thinned in minus lenses and centers thinned in plus.
- [Trifocal](https://opticiancertification.org/trifocal/) - An ophthalmic lens that incorporates three lenses of different powers. The main portion is usually focused for distance (20 ft.), the center segment for about 2 ft., and the lower segment for near (40 cm, or 16 inches).
- [Color blindness](https://opticiancertification.org/color-blindness/) - Also known as Dyschromotopsia. A general term for color vision abnormalities. Heritable dyschromatopsias include red (protan), green (deutan), and blue (tritan) color vision deficits. These deficits may be partial (-omaly) or complete (-opia). Red and green color vision defects are X-linked while loss of the blue receptor (tritanopia) is inherited in an autosomal recessive fashion. Also see: Protanomalous Decreased ability to determine differences between colors, especially shades of red and green. Usually hereditary.
- [low vision](https://opticiancertification.org/low-vision/) - Term usually used to indicate vision of less than 20/200. May require additional optical aids, especially for near point tasks.
- [Uveitis](https://opticiancertification.org/uveitis/) - Inflammation involving the pigmented layers of the eye (the iris, ciliary body and choroid).
- [Presbyopia](https://opticiancertification.org/presbyopia/) - Eyesight disorder caused by the aging of the crystalline lens, which with time thickens and loses its suppleness. As the crystalline lens becomes more rigid, it changes shape less easily and the subject sees less and less well in near vision. Refractive condition in which there is a diminished power of accommodation arising from loss of elasticity of the crystalline lens, as occurs with aging. Usually becomes significant after age 40.
- [Astigmatism](https://opticiancertification.org/astigmatism/) - Structural defects of the eye in which the light rays from a viewed object do not meet in a single focal point, resulting in blurred images being sent to the brain. An astigmatic cornea is not perfectly rounded like a basketball but has an irregular shape more like the side of a football. Astigmatism is most often combined with myopia or hyperopia . A difference in the focal point of the eye in one meridian from another (eg between the horizontal and vertical planes). It can usually be corrected with a cylindrical (toric) lens. An irregularity in the curvature of the cornea, resulting in unequal blur in the two principle meridians. A Refractive Error of the eye in which refractive power is not uniform in all directions (meridians). Light rays entering the eye are refracted unequally through different meridians, which prevents formation of a sharp image focus on the retina. Correctable with a cylindrical lens.
- [Contact Lenses](https://opticiancertification.org/contact-lenses/) - Small soft or rigid lenses floated on the tear film over the cornea to correct eyesight.
- [Optical Correction](https://opticiancertification.org/optical-correction/) - Combination of the curvatures of the front and rear surfaces of a lens, measured in diopters.
- [Zonular fibres](https://opticiancertification.org/zonular-fibres/) - The natural lens is suspended within the eye by elastic fibres around its circumference. These, and the lens capsule are retained during the cataract surgery to allow the lens implant to be supported in the position that the original lens occupied.
- [Goldmann visual field](https://opticiancertification.org/goldmann-visual-field/) - A type of vision test in which progressively dimmer lights are moved from the peripheral vision into the central vision, using an instrument that allows the point at which the light is first seen to be accurately mapped. In this test, a trained perimetrist moves the stimulus; stimulus brightness is held constant. The limits of the visual field are mapped to lights of different sizes and brightness. Also known as Goldmann kinetic perimetry.
- [Descemet's membrane](https://opticiancertification.org/descemets-membrane/) - A layer of the cornea which lies just forward of the endothelium.
- [Papillomacular bundle](https://opticiancertification.org/papillomacular-bundle/) - A collection of retinal ganglion cells that carry the information from the macula (the central retina) to the optic nerve and on to the brain. If damaged, central visual field defects occur.
- [binocular vision](https://opticiancertification.org/binocular-vision/) - Focusing and fusing of the separate images seen by each eye into one single binocular image.
- [Aberration](https://opticiancertification.org/aberration/) - Distortions, related to astigmatism , that cause the inability of light rays entering the eye to converge (come together) to a single focus point on the retina . Aberration are divided into two main categories: higher-order and lower-order. Optical system image defects; rays of light emanating from an object-point fail to form a perfect image-point.
- [Addition](https://opticiancertification.org/addition/) - The optical power (of a lens) required for near vision, in addition to that required for far vision.
- [Epithelium (of the cornea)](https://opticiancertification.org/epithelium-of-the-cornea/) - The layer of the cornea closest to the tear film.
- [Peripapillary atrophy](https://opticiancertification.org/peripapillary-atrophy/) - Thinning of the retina and retinal, pigment epithelium in the region immediately surrounding the optic nerve head. This can be seen in a number of pathologic and benign conditions.
- [Cupping (Disk cupping)](https://opticiancertification.org/cupping-disk/) - An enlargement of the cup or central depression in the optic nerve head. Cupping is visible when viewing the back of the eye with an ophthalmoscope. An enlarged cup especially if accompanied by a notch or a small spot of bleeding is a sign of glaucoma. Cupping is a clinical sign that indicates that a large number of nerve fibers in the optic nerve have been lost.
- [Protanomaly, protanomalous](https://opticiancertification.org/protanomaly-protanomalous/) - Partial color deficiency affecting the ability to see the color red. There are three possible color vision deficits: red (protan), green (deutan), and blue (tritan). The suffixes ?omaly and ?opia indicate partial and complete color vision deficits, respectively. Therefore, a person who has tritanomaly will have a partial blue color vision deficit while a person who has deuteranopia will have a complete green color deficit.
- [Endothelium](https://opticiancertification.org/endothelium/) - The layer of the cornea closest to the anterior chamber. It is a single layer of cells which does not regenerate after birth. Its function is to pump fluid out of the cornea. If it fails, the cornea becomes hazy (decompensates).
- [age-related macular degeneration (AMD, ARMD)](https://opticiancertification.org/age-related-macular-degeneration-amd-armd/) - A condition that includes deterioration of the macula and resulting in loss of sharp central vision. Most common cause of decreased vision after age 60.
- [Cecocentral scotomas](https://opticiancertification.org/cecocentral-scotomas/) - These are visual field defects that extend from the central vision to the natural blind spot. This type of field defect usually represents an insult to the cluster of retinal ganglion cells called the papillomacular bundle.
- [Retinal ganglion cells](https://opticiancertification.org/retinal-ganglion-cells/) - These cells transmit the information from the other layers of the retina to the brain. The axons of these cells make up the optic nerve. Retinal ganglion cells comprise the most superficial cell layer in retina and are susceptible to damage in a number of disease entities, including glaucoma.
- [Emmetropia](https://opticiancertification.org/emmetropia/) - Clear and comfortable eyesight in both far and near vision. Emmetropia is the opposite of ametropia. Absence of Refractive Error. Sometimes called ?Normal 20/20 Vision.? Images at 20 feet focus sharply on the retina.
- [Anterior ocular segment](https://opticiancertification.org/anterior-ocular-segment/) - Part of the eye anterior to the crystalline lens , including the cornea , anterior chamber , iris and ciliary body .
- [bifocals](https://opticiancertification.org/bifocals/) - A lens having two separate and distinct points of focus (focal lengths) which incorporate two different powers in each lens, usually for near and distance corrections.
- [Amblyopia](https://opticiancertification.org/amblyopia/) - Dullness or obscurity of sight for no apparent organic reason, therefore not correctable with glasses or surgery. Sometimes called a lazy eye, wherein one eye becomes dependent on the other eye to focus, usually developed in early childhood. Often associated with strabismus. The conditions that most commonly cause amblyopia are eye misalignment (strabismus), a significant difference in spectacle prescription (refractive error) between the two eyes (anisometropia), or interruption of the light path of one of the eyes (by cataract, scar, tumor, etc.). If amblyopia is not treated before the age of 8, the visual deficit is usually permanent. Also referred to as ?lazy eye?. A failure of development of the part of the brain which processes vision, which can arise if the eye in question is misaligned with the dominant eye, or is significantly out of focus or is prevented from seeing clearly (eg by cataract) during the first 7 years or so of life when the visual system is still developing. It is usually reversible during this time by treating its cause and patching the other eye, but becomes irreversible once the visual system is mature. Amblyopia, or lazy eye, is reduced visual acuity that cannot be improved by wearing eyeglasses.
- [Anisometropia](https://opticiancertification.org/anisometropia/) - Condition of the eyes in which they have unequal refractive power.
- [Orthoptist](https://opticiancertification.org/orthoptist/) - A health care professional who specialises in the assessment of strabismus and eye movement disorders. Orthoptists undertake a three year degree course and are registered with the Health and Care Professions Council.
- [orthoptics](https://opticiancertification.org/orthoptics/) - Optical specialty dealing with the diagnosis and treatment of defective eye coordination, binocular vision, and functional amblyopia by non-medical and non-surgical methods, e.g., glasses, prisms, exercises.
- [Endophthalmitis](https://opticiancertification.org/endophthalmitis/) - Infection which involves the internal structures of the eye. It usually poses a serious threat to the visual function of the eye.
- [Optometrist](https://opticiancertification.org/optometrist/) - Eyecare professional, conducts refractive examinations, fits contact lenses and assesses overall eye health. Doctor of optometry (OD) specializing in vision problems, treating vision conditions with spectacles, contact lenses, low vision aids and vision therapy, and prescribing medications for certain eye diseases.
- [Optician](https://opticiancertification.org/optician/) - Eyecare professional, designs and adapts eyeglasses in accordance with measurements specific to each wearer. Professional who makes and adjusts optical aids, e.g., eyeglass lenses, from refraction prescriptions supplied by an ophthalmologist or optometrist.
- [Ophthalmologist](https://opticiancertification.org/ophthalmologist/) - Physician, surgeon specialized in the treatment of eye diseases, conditions and eyesight correction. Physician (MD) specializing in diagnosis and treatment of refractive, medical and surgical problems related to eye.
- [Antioxidants](https://opticiancertification.org/antioxidants/) - Micronutrients that destroy or neutralize free radicals, molecules that have been implicated as one causative factor in the stimulation of abnormal cellular reproduction (cancer) and cellular destruction (aging).
- [Visual Acuity](https://opticiancertification.org/visual-acuity/) - Ability to discern the details of an object. A normal average eye an angle of one minute of arc (1/60th degree). Assessment of the eye's ability to distinguish object details and shape, using the smallest identifiable object that can be seen at a specified distance (usually 20 ft. or 16 in.) and letter height (8.87mm).
- [Visual field](https://opticiancertification.org/visual-field/) - Field of vision: The entire area that can be seen when the eye is directed forward, including that which is seen with peripheral vision. The area visible to an eye that is fixating straight ahead.
- [Visual field testing](https://opticiancertification.org/visual-field-testing/) - A visual field test is an examination that may be performed to analyze a patient's visual field. The test may be performed by a technician directly, with the assistance of a machine, or completely by an automated machine. Machine based tests aid diagnostics by allowing a detailed printout of the patient's visual field. See Perimetry
- [Vitrectomy](https://opticiancertification.org/vitrectomy/) - A surgical procedure to remove vitreous from the eye.
- [Vitreo-retinal surgery](https://opticiancertification.org/vitreo-retinal-surgery/) - Surgical procedures involving the vitreous or the retina.
- [Vitreous](https://opticiancertification.org/vitreous/) - A transparent substance with the consistency of egg-white which occupies the space inside the eye behind the lens.
- [Topical](https://opticiancertification.org/topical/) - Using eye drops or ointment.
- [Toric](https://opticiancertification.org/toric/) - A type of lens required to correct astigmatism.
- [Trabecular meshwork](https://opticiancertification.org/trabecular-meshwork/) - A network of drainage channels located at the periphery of the anterior chamber of the eye, through which aqueous drains from the eye into the circulation.
- [Trabeculectomy](https://opticiancertification.org/trabeculectomy/) - A surgical procedure to allow aqueous to flow from the anterior chamber of the eye to a space under the conjunctiva in a controlled fashion, in order to reduce the pressure in the eye.
- [Tritanopia](https://opticiancertification.org/tritanopia/) - A form of color blindness exhibiting loss of the blue receptor, inherited in an autosomal recessive fashion.
- [Variable expressivity](https://opticiancertification.org/variable-expressivity/) - The idea that individuals with a particular disease process will not each experience the same severity of disease. For instance, one person may have a milder form of the disease while another person with the same disease has a more severe manifestation of the disease. This is in contrast to incomplete penetrance.
- [Vascular endothelial growth factor (VEGF)](https://opticiancertification.org/vascular-endothelial-growth-factor-vegf/) - A protein which induces the growth of new blood vessels and is usually produced in response to impaired oxygen flow to tissues. It may be produced in increased quantity in diabetic retinopathy and age-related macular degeneration.
- [Vasculitis (plural: vasculitides)](https://opticiancertification.org/vasculitis-plural-vasculitides/) - A group of conditions characterised by the inflammation of blood vessel walls.
- [Vision rehabilitation aids](https://opticiancertification.org/vision-rehabilitation-aids/) - Devices such as magnifiers and closed circuit television sets that can help people with sub-normal vision see more and function better in day to day activities. Also known as Low Vision aids.
- [Retinitis pigmentosa](https://opticiancertification.org/retinitis-pigmentosa/) - A group of genetic eye conditions leading to chronic retinal degeneration, accompanied by abnormal deposits of pigment. The disease causes a progressive decrease in peripheral or side vision. Associated with night blindness, loss of peripheral vision, tunnel vision, decreased acuity, lack of depth perception, retinal scarring, and photophobia.
- [Schlemm's canal](https://opticiancertification.org/schlemms-canal/) - A small channel near the root of the iris which extends round the circumference of the eye. The trabecular meshwork filters aqueous into it, and from it the aqueous drains into veins which leave the eye.
- [Sclera](https://opticiancertification.org/sclera/) - The ?white? of the eye. It forms the wall of the eye, except in the region of the cornea.
- [Scotoma](https://opticiancertification.org/scotoma/) - An area of partial alteration in the field of vision with partially diminished or entirely degenerated visual acuity which is surrounded by a field of normal vision.
- [Scotopic](https://opticiancertification.org/scotopic/) - A condition of "dark adaptation" that is used in retinal testing such as the electroretinogram. Dark adaptation is accomplished by placing black goggles over the patient's eyes for a predetermined period of time (usually about 30 minutes). This can be useful for determining health of "rods," or the dim light-detecting cells in the retina.
- [Semi-Finished Lenses](https://opticiancertification.org/semi-finished-lenses/) - The front surface is finished and the rear face is surfaced on demand.
- [Septo-optic dysplasia](https://opticiancertification.org/septo-optic-dysplasia/) - A clinically heterogeneous disorder loosely defined by any combination of optic nerve hypoplasia, pituitary gland hypoplasia, and midline abnormalities of the brain, including absence of the corpus callosum and septum pellucidum.
- [Single Vision Lenses](https://opticiancertification.org/single-vision-lenses/) - Correct ametropia or presbyopia. The power is the same over the entire lens.
- [Strabismus](https://opticiancertification.org/strabismus/) - A condition in which the eyes are not properly aligned with each other resulting in an inability to focus both eyes on a given point. Greek strabismos = squinting Squint, a misalignment of the two eyes. Eyesight disorder related to a defect in the parallelism of the visual axes. Early detection in children is vital in order to avoid any risk of amblyopia. There are three forms of strabismus.
- [Stroma](https://opticiancertification.org/stroma/) - The central layer of the cornea between the epithelium and endothelium. It makes up the majority of the thickness of the cornea.
- [Surfacing](https://opticiancertification.org/surfacing/) - The grinding and polishing of a lens surface.
- [progressive addition lens (PAL), progressive-power lens](https://opticiancertification.org/progressive-addition-lens-pal-progressive-power-lens/) - Ophthalmic lens that utilizes a steepening of curves to incorporate corrections for distance vision through intermediate range, to near vision (usually in lower part of lens), with smooth transitions and no bifocal demarcation line.
- [Progressive Lenses](https://opticiancertification.org/progressive-lenses/) - Corrects presbyopia by varying optical power progressively from an upper to lower part. No lines.
- [Prostaglandin analogue](https://opticiancertification.org/prostaglandin-analogue/) - One of the groups of eye drops used to treat glaucoma. They work by increasing the rate at which aqueous passes out of the eye.
- [Pupil](https://opticiancertification.org/pupil/) - Central opening of the iris through which rays of light enter the eye. The diameter depends on ambient light. An opening in the center of the iris, of variable sizes, that regulates the amount of light that enters the eye.
- [refraction](https://opticiancertification.org/refraction/) - A test to determine the refractive state of the eye, and the best corrective lenses required to aid in clear vision. A series of lenses in graded powers are offered to determine which provide sharpest, clearest vision.
- [Refractive error](https://opticiancertification.org/refractive-error/) - The amount of myopia, hyperopia or astigmatism. An error in refraction of the eye. An optical defect in an unaccommodating eye in which parallel light rays do not focus sharply on the retina.
- [Refractive Index](https://opticiancertification.org/refractive-index/) - Characterizes the way a transparent optical material bends or refracts light.
- [Relative afferent pupillary defect (RAPD](https://opticiancertification.org/relative-afferent-pupillary-defect-rapd/) - An indication of damage to the visual system which is greater on one side than the other. The presence of a relative afferent pupillary defect (RAPD) means that the pupils constrict less when a light is directed into the affected eye than they do when the same light is directed into the normal (or less affected) eye . The presence of an RAPD usually indicates damage to the retina or optic nerve that results in diminished light impulses being transmitted from the eye to the brain on the affected side.
- [Retina](https://opticiancertification.org/retina/) - The layer of the eye that contains the photoreceptors which detect light. Light-sensitive membrane at the back of the eye on which object images are formed and which transmits information to the brain. This hypersensitive membrane plays an essential role in the perception of light, colors, details, shape and movement. Light sensitive with photoreceptors in the eye that converts images from the eye's optical system into electrical impulses that are sent to the brain where the image is formed.
- [Pars plana](https://opticiancertification.org/pars-plana/) - A flat, rather featureless area of the ciliary body which contains relatively few blood vessels. Instruments used in vitreoretinal surgery are inserted in this region.
- [peripheral vision](https://opticiancertification.org/peripheral-vision/) - Side vision; vision, caused by stimuli falling on retinal areas distant from the macula, toward the sides of the globe.
- [Photochromic](https://opticiancertification.org/photochromic/) - Variable tint lens that can darken or lighten depending on the presence of UV.
- [Photophobia](https://opticiancertification.org/photophobia/) - In biology, photophobia (adjective: photophobic) refers to negative response to light. Also called "light sensitivity" this is an excessive sensitivity to light and the aversion to sunlight or well-lit places. In ordinary medical terms photophobia is not a morbid fear, but an experience of discomfort or pain to the eyes due to light exposure. May be associated with excessive tearing. There can be many causes including inflammation of the iris or cornea. Extreme sensitivity to, and discomfort from, light. May be associated with excessive tearing.
- [Photopic](https://opticiancertification.org/photopic/) - A condition of "light adaptation" that is used in retinal testing such as the electroretinogram. Light adaptation is accomplished by exposing a patients eyes to diffuse light of moderate intensity several minutes. This can be useful for determining the health of "cones," the fine detail and color perceiving cells in the retina.
- [Polycarbonate](https://opticiancertification.org/polycarbonate/) - Lens material characterized by lightness, impact resistance, high refractive index, UV absorption.
- [Posterior capsule opacification](https://opticiancertification.org/posterior-capsule-opacification/) - Thickening of the lens capsule following cataract surgery. This is a healing response, which in some people may be sufficient to reduce the vision and require laser treatment to make an opening in the capsule at some point after cataract surgery.
- [Posterior capsule rupture](https://opticiancertification.org/posterior-capsule-rupture/) - A break in the posterior capsule of the lens, usually as a complication of cataract surgery. It may allow vitreous to move forward into the anterior chamber of the eye.
- [Neovascular glaucoma](https://opticiancertification.org/neovascular-glaucoma/) - A form of glaucoma which arises because of the growth of new blood vessels on the iris which close off the trabecular meshwork. It can be a complication of a number of conditions eg diabetic retinopathy.
- [OAA](https://opticiancertification.org/oaa/) - Opticians Association of America. From their website (OAA.org), The OAA is "the only national organization representing opticianry's business, professional, educational, legislative and regulatory interests.T he Opticians Association of America's mission is to promote and expand opticianry by being the single unified voice of America's Opticians. In support of this mission we are committed to promoting professional stature through leadership, education, legislative representation and communication."
- [Ocular Globe](https://opticiancertification.org/ocular-globe/) - The eyeball, about 25mm in diameter when emmetropic.
- [Optical Coherence Tomography](https://opticiancertification.org/optical-coherence-tomography/) - Optical coherence tomography (OCT) is a noninvasive imaging technology used to obtain high resolution cross-sectional images of the retina. OCT is similar to ultrasound testing, except that imaging is performed by measuring light rather than sound. OCT measures the retinal nerve fiber layer thickness in glaucoma and other diseases of the optic nerve.
- [Organic/Plastic Lenses](https://opticiancertification.org/organic-plastic-lenses/) - Organic lenses aremade from a "polymerized" resin.
- [Orthophoric](https://opticiancertification.org/orthophoric/) - Proper alignment of the two eyes. Absence of eye deviation.
- [Lens capsule](https://opticiancertification.org/lens-capsule/) - The eye?s lens consists of tightly packed layers of transparent protein fibres contained within an elastic capsule. During cataract surgery, the layers of lens fibres are removed, but the posterior part of the lens capsule and its supporting zonular fibres are retained to act as a support for the lens implant.
- [lens, crystalline lens](https://opticiancertification.org/lens-crystalline-lens/) - The natural lens inside the eye. Transparent, biconvex intraocular tissue that helps refract rays of light to a point focus on the retina.
- [Limbus](https://opticiancertification.org/limbus/) - The region where the cornea and the sclera meet.
- [Macula](https://opticiancertification.org/macula/) - Central part of the retina. Composed uniquely of cone cells and enables precise vision.
- [Macula, macula lutea](https://opticiancertification.org/macula-macula-lutea/) - The central portion of the retina that is responsible for central vision. An insult to the macula can cause loss of central vision and a significant decrease in visual acuity.
- [Macular oedema](https://opticiancertification.org/macular-oedema/) - The accumulation of fluid within the central area of the retina. This may occur as a complication of intraocular surgery, as a response to uveitis or as a complication of other retinal conditions such as diabetic retinopathy.
- [Microkeratome](https://opticiancertification.org/microkeratome/) - A device which cuts a flap of the cornea prior to removal some of the thickness of the underlying corneal stroma with the excimer laser during refractive surgery.
- [Mydriatic](https://opticiancertification.org/mydriatic/) - An eye drop or ointment which dilates the pupil.
- [Myopia](https://opticiancertification.org/myopia/) - Short-sightedness, requiring a concave lens to focus the vision. Near-sightedness, an eye that is too powerful or too long. The image forms in front of the retina; a person with myopia thus sees badly in far vision but well in near vision. A Refractive Error in which the eye over-focuses light. Rays of light traveling from a distant object are brought to focus in front of the retina. Requires a minus (concave) lens to correct.
- [Nagel anomaloscope](https://opticiancertification.org/nagel-anomaloscope/) - A device that used to determine degree of red or green color vision deficit. A dial on the anomaloscope is adjusted until the viewer (patient) believes that the green-red balance is appropriate compared with a standard yellow light whose intensity can also be varied. When a person with normal color vision views the "match" made by a patient with abnormal color vision, a deficit in either red or green color vision is readily apparent.
- [Glaucoma](https://opticiancertification.org/glaucoma/) - A condition, usually characterised by raised pressure in the eye which causes damage to the optic nerve resulting in defects in the field of vision. It is treated by reducing the pressure in the eye. Increase in intra-ocular pressure resulting, if left untreated, in an irreversible deterioration of the optical nerve and of the retina, as well as an alteration of the visual field, i.e. a reduction in visual performance, often accompanied by headaches and aching eyes. A disease of the eye characterized by increased intraocular pressure. A common cause of preventable vision loss. May be treated by prescription drugs or surgery.
- [Glaucoma, normal-tension](https://opticiancertification.org/glaucoma-normal-tension/) - Glaucoma in which the intraocular pressure is normal but there is progressive optic nerve damage and visual field loss. Also known as Low Tension Glaucoma.
- [Half-Eye Lenses](https://opticiancertification.org/half-eye-lenses/) - Lens for near vision only shaped like the lower half of a normal lens.
- [Hyperopia](https://opticiancertification.org/hyperopia/) - Far-sightedness, an eye that is too short and/or insufficiently powered. The image forms behind the retina, which explains why the hyperopic subject has better eyesight in far vision than in near vision. In cases of mild hyperopia, the subject sees correctly in far vision by compensating the hyperopia through accommodation. In cases of severe hyperopia, the eye can no longer compensate in this way. Focusing defect in which an eye is underpowered. Light rays coming from a distant object strike the retina before coming to sharp focus, causing blurred vision. Corrected with plus (convex) lenses.
- [Hyperopia (or hypermetropia)](https://opticiancertification.org/hyperopia-or-hypermetropia/) - Long-sightedness, requiring a convex lens to focus the vision.
- [Incomplete penetrance](https://opticiancertification.org/incomplete-penetrance/) - The concept that even though several members of a family or population may have the same DNA mutation, not everyone with that mutation will have or develop the disease. This is in contrast to variable expressivity which means that people with the same disease have varying disease severity. Penetrance, in contrast, is more of a yes/no question ? does or does not the person have the disease.
- [Intraocular Pressure](https://opticiancertification.org/intraocular-pressure/) - Fluid pressure exerted inside the eyeball (ocular globe), which keeps the wall taut.
- [Iris](https://opticiancertification.org/iris/) - Circular membrane that delimits the pupil. The iris acts as a diaphragm that contracts according to the intensity of light. Pigmented tissue lying behind the cornea that gives color to the eye (e.g., blue eyes) Controls light by contracting and constricting the opening (pupil).
- [Ishihara plates](https://opticiancertification.org/ishihara-plates/) - A common type of color vision test that can help determine general and specific inherited color vision deficits. It consists of a series of color plates in which the test taker is asked to identify numbers or geometric shapes composed of specific colors that are hidden within a field of spots of very similar colors. People with normal color vision can see the numbers or geometric figures while people with abnormal color vision cannot. See Ishihara Test Ishihara
- [Isopter](https://opticiancertification.org/isopter/) - A line connecting a series of points in a visual field at which a person is able to detect a certain size and intensity of light. Isopters in normal visual fields are oval in shape.
- [Leber hereditary optic neuropathy (LHON)](https://opticiancertification.org/leber-hereditary-optic-neuropathy-lhon/) - A disease entity that most commonly affects young men in their teens and early twenties and causes significantly decreased central vision in both eyes. The genes that cause LHON are carried on small circular mitochondrial DNA molecules that are inherited from an individuals mother. This condition is extremely rare (affecting fewer than 1 per million people per year) and does not affect everyone who harbors the genetic defect. The visual field defects in LHON are typically cecocentral scotomas. There are three other eye diseases named after Theodore Leber: 1) Leber congenital amaurosis (blindness at birth) inherited in an autosomal recessive fashion, 2) Leber's stellate neuroretinopathy (a non-heritable condition associated with cat scratch disease) and 3) Leber's military aneurysms (a non-heritable vascular malformation of the retina similar to Coat's disease).
- [Electromyography](https://opticiancertification.org/electromyography/) - A technique of recording electrical impulses from the contraction of a muscle. It is used to confirm the correct position of the needle when botulinum toxin is used to correct strabismus.
- [Electroretinogram (ERG)](https://opticiancertification.org/electroretinogram-erg/) - A test that measures the electrical activity of the retina when exposed to flashes of light of varying intensity. Abnormalities in the electroretinogram typically occur in conditions that affect the photoreceptor cells (e.g. retinitis pigmentosa).
- [Epiphora](https://opticiancertification.org/epiphora/) - Excessive tear production or insufficient tear drainage from the eyes (usually from blockage of the lacrimal duct) causing overflow of tears onto the face.
- [Excimer laser](https://opticiancertification.org/excimer-laser/) - A type of laser which emits in the ultraviolet range of the spectrum. In ophthalmology, it is used for removing tissue from the cornea, particularly in refractive surgery.
- [Fovea](https://opticiancertification.org/fovea/) - Learn what the fovea is and how it enables sharp vision. Essential knowledge for optician certification exam preparation and eye care professionals.
- [Foveal burn](https://opticiancertification.org/foveal-burn/) - A laser burn in the fovea, which can occur as an adverse event during retinal laser treatment.
- [Foveola](https://opticiancertification.org/foveola/) - The center of the fovea is the foveola ? about 0.2 mm in diameter ? where only cone photoreceptors are present. The central fovea consists of very compact cones, thinner and more rod-like in appearance than cones elsewhere. Starting at the outskirts of the fovea, however, rods gradually appear, and the absolute density of cone receptors progressively decreases.
- [Corrective Lenses](https://opticiancertification.org/corrective-lenses/) - Corrects eyesight disorders and is a combination of material, optical surface and coatings.
- [Crystalline Lens](https://opticiancertification.org/crystalline-lens/) - Transparent biconvex lens located behind the pupil; refracts light to focus images on the retina. The natural lens inside of the eye. Transparent, biconvex intraocular tissue that converges light to helps bring rays of light to the retina.
- [Cycloplegic](https://opticiancertification.org/cycloplegic/) - A substance which paralyses the ciliary muscle. It is usually necessary to use this to obtain an accurate measurement of refractive error in younger children.
- [Deuteranopia, deuteranopic](https://opticiancertification.org/deuteranopia-deuteranopic/) - Complete color deficiency affecting the ability to see the color green. There are three possible color vision deficits: red (protan), green (deutan), and blue (tritan). The suffixes ?omaly and ?opia indicate partial and complete color vision deficits, respectively. Therefore, a person who has deuteranopia has a complete green color deficit.
- [Digital Surfacing](https://opticiancertification.org/digital-surfacing/) - Precise surface cutting using single point turning; cutting height is controlled at all points on the lens.
- [Diopter](https://opticiancertification.org/diopter/) - Optical system with a focal distance of 1m. Refraction defects are measured in diopters (visual insufficiency). Unit of measurement for lens power. It is the reciprocal of the focal length in Meters.
- [Dioptre](https://opticiancertification.org/dioptre/) - A unit of power of a lens, the reciprocal of the focal length of the lens.
- [diplopia](https://opticiancertification.org/diplopia/) - A visualization of two images from one object; images may be horizontal, vertical or oblique.
- [Dyschromotopsia](https://opticiancertification.org/dyschromotopsia/) - A general term for color vision abnormalities. Heritable dyschromatopsias include red (protan), green (deutan), and blue (tritan) color vision deficits. These deficits may be partial (-omaly) or complete (-opia). Red and green color vision defects are X-linked while loss of the blue receptor (tritanopia) is inherited in an autosomal recessive fashion.
- [blind spot](https://opticiancertification.org/blind-spot/) - Sightless area within the visual field of a normal eye, where the optic disc attaches the optic nerve to the eye. Caused by absence of light sensitive photoreceptors where the optic nerve enters the eye.
- [Cataract](https://opticiancertification.org/cataract/) - Opacification of the crystalline lens. An extraction of the lens is usually replaced by an intra-ocular lens (implant). Clouding of the crystalline lens, which may prevent a clear image from forming on the retina. If visual loss becomes significant, surgical removal is required. Types of cataracts include traumatic, congenital and age-related. .
- [central vision](https://opticiancertification.org/central-vision/) - An eye's best vision; used for reading and discriminating fine detail and color.
- [Choroid](https://opticiancertification.org/choroid/) - The pigmented layer of the eye between the retina and the sclera. It contains a rich network of blood vessels.
- [Choroidal neovascular membrane](https://opticiancertification.org/choroidal-neovascular-membrane/) - A network of blood vessels which originates from the choroid layer which comes to lie just under the retina. This results in leakage of fluid or bleeding into the retina. It is usually a complication of age-related macular degeneration and is popularly referred to as ?wet macular degeneration?.
- [Ciliary body](https://opticiancertification.org/ciliary-body/) - A pigmented part of the eye, lying just behind the iris. One of its functions is to produce aqueous.
- [Coatings](https://opticiancertification.org/coatings/) - Applied to corrective lenses after surfacing to be scratch-resistant, anti-reflective, polarizing, color, antistatic, anti-smudge.
- [Conjunctivochalasis](https://opticiancertification.org/conjunctivochalasis/) - A redundant folds in the conjunctiva typically located between the globe and the lower eyelid. Loose bulbar conjunctiva that may become pinched between the lids and cause tearing and inflammation. Frequently age-related. Usually found along the lower lid margin. It interferes with the normal distribution of tears causing dry eye and epiphora.
- [Convergence](https://opticiancertification.org/convergence/) - Reflex that enables the eyes to focus on a single point in near vision.
- [Cornea](https://opticiancertification.org/cornea/) - The ?front window? of the eye. Transparent front part of the globe shaped like a slightly domed cap. It is the primary focusing structure with the lens. Transparent membrane in the front of the eye that covers the iris, pupil, and anterior chamber and provides most of an eye's optical power.
- [Aqueous humor](https://opticiancertification.org/aqueous-humor/) - Transparent fluid occupying the anterior chamber and maintains eye pressure.
- [Argon laser](https://opticiancertification.org/argon-laser/) - Device used to treat glaucoma (usually open angle) and diabetic retinopathy using a thermal beam.
- [ARMD](https://opticiancertification.org/armd/) - Age related macular degeneration: Destruction and loss of the photoreceptors in the macula region of the retina resulting in decreased central vision and, in advanced cases, blindness.
- [Asthenopia](https://opticiancertification.org/asthenopia/) - Eyestrain. Subjective symptoms of ocular fatigue, discomfort, lacrimation, and headaches arising from the use of eyes.
- [Astigmatic Keratotomy](https://opticiancertification.org/astigmatic-keratotomy/) - A modified form of Radial Keratotomy (RK).
- [Autosomal recessive](https://opticiancertification.org/autosomal-recessive/) - An inheritance pattern in which a person must inherit two copies of an abnormal gene (one from each parent) in order to develop the disease. If two individuals each carry one copy of an abnormal gene, then each child born to these two parents will have a 25% chance of receiving 2 copies of the abnormal gene and as a result, inherit the disease. Cystic fibrosis is an example of an autosomal recessive disease.
- [Bifocal Lens](https://opticiancertification.org/bifocal-lens/) - Lens with two points of focus, designed to relieve presbyopia. The lower part of the lens allows near vision; the rest of the lens is designed for far vision.
- [Biologic therapeutic agent](https://opticiancertification.org/biologic-therapeutic-agent/) - A group of genetically engineered antibodies which target specific molecules involved in the immune system or the system which regulates inflammation and block their action. Anti-VEGF drugs belong to this group.
- [Ametropia](https://opticiancertification.org/ametropia/) - Eyesight disorders that prevent a clear image from forming on the retina (myopia, hyperopia, astigmatism).
- [Amsler grid](https://opticiancertification.org/amsler-grid/) - Hand held chart featuring horizontal and vertical lines, usually white on black background, used to test for central visual field defects.
- [Angle (Drainage Angle)](https://opticiancertification.org/angle-drainage-angle/) - Drainage area of the eye formed between the cornea and the iris , named for its angular shape, which is why you see the word "angle" in the different glaucoma names.
- [Anterior Chamber](https://opticiancertification.org/anterior-chamber/) - Space between the cornea and the crystalline lens , which contains aqueous humor .
- [Antimetabolite](https://opticiancertification.org/antimetabolite/) - The term given to a drug which retards cell division and slows down healing. In glaucoma surgery, antimetabolites are often used to prevent the drainage site from failing because of scarring.
- [Aphakia](https://opticiancertification.org/aphakia/) - Absence of the lens of the eye.
- [Aqueous](https://opticiancertification.org/aqueous/) - The clear fluid which occupies the anterior chamber of the eye.
- [Ablation](https://opticiancertification.org/ablation/) - Surgical removal of tissue, typically using a cool beam laser
- [Ablation zone](https://opticiancertification.org/ablation-zone/) - The area of tissue that is removed during laser surgery
- [ABO-NCLE](https://opticiancertification.org/abo-ncle/) - The American Board of Opticianry (ABO) and the National Contact Lens Examiners (NCLE) are the largest and most prestigious Opticians? certification organizations in the world, recognizing individuals whose Opticianry skills and knowledge meet predetermined standards of excellence. More than 96,000 certifications have been awarded since 1976, and more than 40,000 certifications are currently in force.
- [Accommodation](https://opticiancertification.org/accommodation/) - Ability of the eye to change its focus between distant objects and near objects. The eye?s ability to clearly see objects at close distances. The autotic adjustment of optical power by the eye in order to maintain a clear image (focus) as objects are moved closer.
- [Altitudinal visual field defects](https://opticiancertification.org/altitudinal-visual-field-defects/) - This term describes a visual field defect in which either the upper or lower half of the visual field is selectively affected. The selective abnormality often creates a horizontal line across the visual field (known as "respecting the horizontal meridian"). Altitudinal defects occur in retinal vascular disease, glaucoma, and other disorders that affect the eye itself.
- [AMD](https://opticiancertification.org/amd/) - Age-related macular degeneration, a disease that damages the macula, the central part of the retina, leading to a loss of central vision and leaving only the peripheral or lateral vision intact.

## Pages

- [Home](https://opticiancertification.org/) - Discover your new career as a certified optician. OpticianCertification.org provides with full listings of schools and programs, and detailed career data.
- [Jobs](https://opticiancertification.org/jobs/) - Work With Us At OpticianCertification.org, we are committed to empowering the next generation of opticians by providing comprehensive resources and certification guidance. While we currently do not have any job openings, we are always eager to connect with passionate individuals interested in contributing to our mission. Search Optician Certification Training ProgramsGet information on Optician Certification
- [How to Become an Ophthalmologist](https://opticiancertification.org/how-to-become-an-ophthalmologist/) - An ophthalmologist is a medical doctor or doctor of osteopathy who specializes in treating the eye and helping patients maintain their vision.
- [What is an Ophthalmic Technician](https://opticiancertification.org/what-is-an-ophthalmic-technician/) - If you've heard about ophthalmic technicians and think it sounds like an exciting career choice, find out more here about these key health professionals.
- [What Is An Orthoptist](https://opticiancertification.org/what-is-an-orthoptist/) - Orthoptists are highly trained, well-paid and certified professionals who specialize in treating how our eyes work together to provide binocular vision.
- [What is an Ophthalmic Medical Technologist](https://opticiancertification.org/what-is-an-ophthalmic-medical-technologist/) - If you've ever had an eye exam, you've probably met an ophthalmic medical technologist. Ophthalmic medical technologists work in vision clinics and eye centers.
- [What is an Ophthalmic Assistant?](https://opticiancertification.org/what-is-an-ophthalmic-assistant/) - Ophthalmic assistants are essential team members in any vision clinic. Specially trained to support ophthalmologists, they perform many of day-to-day tasks.
- [How to Become an Optometrist](https://opticiancertification.org/how-to-become-an-optometrist/) - Optometrists work with patients to correct vision and manage eye diseases. To become an optometrist you need to have a specific degree and a state license.
- [CPO, CPOA and CPOT Certification](https://opticiancertification.org/cpo-cpoa-and-cpot-certification/) - Earn your CPO, CPOA or CPOT certification through the American Optometric Association. Advance your optician career today with CPC credentials.
- [COA, COT, and COMT Certification](https://opticiancertification.org/coa-cot-and-comt-certification/) - Earn your optician certification as COA, COT, or COMT. Start a rewarding healthcare career without a four-year degree. Learn requirements today.
- [California](https://opticiancertification.org/ca/) - Search in Seconds for Optician Schools in California. Learn What You Need. Reviews. Get Certified
- [Wyoming](https://opticiancertification.org/wy/) - Search in Seconds for Optician Certification Schools in Wyoming. Learn What You Need: Reviews
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- [Virginia](https://opticiancertification.org/va/) - Search in Seconds for Optician Certification Schools in Virginia. Learn What You Need: Reviews
- [Utah](https://opticiancertification.org/ut/) - Search in Seconds for Optician Certification Schools in Utah. Learn What You Need: Reviews
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- [South Dakota](https://opticiancertification.org/sd/) - Search in Seconds for Optician Certification Schools in South Dakota. Learn What You Need: Reviews
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- [Nebraska](https://opticiancertification.org/ne/) - Search in Seconds for Optician Certification Schools in Nebraska. Learn What You Need: Reviews
- [North Dakota](https://opticiancertification.org/nd/) - Search in Seconds for Optician Certification Schools in North Dakota. Learn What You Need: Reviews
- [North Carolina](https://opticiancertification.org/nc/) - Search in Seconds for Optician Certification Schools in North Carolina. Learn What You Need: Reviews
- [Montana](https://opticiancertification.org/mt/) - Search in Seconds for Optician Certification Schools in Montana. Learn What You Need: Reviews
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- [About OpticianCertification.org](https://opticiancertification.org/about-opticiancertification-org/) - Our goal is to help recruit new optical professionals, advance this fantastic career and ease the transition to professional life.
- [Disclosures](https://opticiancertification.org/disclosures/) - Disclosures The following information constitutes our website's disclosure policy. It is intended to provide you with an understanding of the relationships, policies, and possible conflicts of interest that could influence the content found on OpticianCertification.org. Content and Contributors: The contributors to this site are opticians at various stages of their careers. All the content provided
- [Disclaimer](https://opticiancertification.org/disclaimer/) - Disclaimer The information provided on OpticianCertification.org is intended for general informational purposes only. It is not a substitute for professional advice, and should not be relied upon as a basis for making decisions without consulting a qualified, informed professional in the field of opticianry. The opinions expressed on OpticianCertification.org are solely those of the individual
- [Florida](https://opticiancertification.org/es/fl/) - Busca Escuelas de Óptica y Optometría en Florida en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
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- [Pennsylvania](https://opticiancertification.org/es/pa/) - Busca Escuelas de Óptica y Optometría en Pennsylvania en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
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- [Ohio](https://opticiancertification.org/es/oh/) - Busca Escuelas de Óptica y Optometría en Ohio en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [New York](https://opticiancertification.org/es/ny/) - Busca Escuelas de Óptica y Optometría en New York en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Nevada](https://opticiancertification.org/es/nv/) - Busca Escuelas de Óptica y Optometría en Nevada en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [New Mexico](https://opticiancertification.org/es/nm/) - Busca Escuelas de Óptica y Optometría en New Mexico en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [New Jersey](https://opticiancertification.org/es/nj/) - Busca Escuelas de Óptica y Optometría en New Jersey en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [North Carolina](https://opticiancertification.org/es/nc/) - Busca Escuelas de Óptica y Optometría en North Carolina en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Mississippi](https://opticiancertification.org/es/ms/) - Busca Escuelas de Óptica y Optometría en Mississippi en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Missouri](https://opticiancertification.org/es/mo/) - Busca Escuelas de Óptica y Optometría en Missouri en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Minnesota](https://opticiancertification.org/es/mn/) - Busca Escuelas de Óptica y Optometría en Minnesota en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Michigan](https://opticiancertification.org/es/mi/) - Busca Escuelas de Óptica y Optometría en Michigan en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Massachusetts](https://opticiancertification.org/es/ma/) - Busca Escuelas de Óptica y Optometría en Massachusetts en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Louisiana](https://opticiancertification.org/es/la/) - Busca Escuelas de Óptica y Optometría en Louisiana en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Kentucky](https://opticiancertification.org/es/ky/) - Busca Escuelas de Óptica y Optometría en Kentucky en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Illinois](https://opticiancertification.org/es/il/) - Busca Escuelas de Óptica y Optometría en Illinois en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Georgia](https://opticiancertification.org/es/ga/) - Busca Escuelas de Óptica y Optometría en Georgia en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [District of Columbia](https://opticiancertification.org/es/dc/) - Busca Escuelas de Óptica y Optometría en District Of Columbia en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Connecticut](https://opticiancertification.org/es/ct/) - Busca Escuelas de Óptica y Optometría en Connecticut en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Arizona](https://opticiancertification.org/es/az/) - Busca Escuelas de Óptica y Optometría en Arizona en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
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- [Oklahoma](https://opticiancertification.org/es/ok/) - Busca Escuelas de Óptica y Optometría en Oklahoma en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Privacy Policy](https://opticiancertification.org/privacy-policy/) - Our privacy policy, cookie policy, how we use your data, how long we keep your data, third-party technologies and embedded content.
- [How to Become an Optometric Assistant](https://opticiancertification.org/how-to-become-an-optometric-assistant/) - Optometric assistants can also be referred to as paraopticians, optometric technicians or optician assistants. Optometric assistants support opticians
- [Basic ABO Certification](https://opticiancertification.org/basic-abo-certification/) - ABO certification through the American Board of Opticianry/National Contact Lens Examiners (ABO-NCLE) can open up more jobs and enhance your career.
- [What are the Differences Between Ophthalmologists, Optometrists and Opticians?](https://opticiancertification.org/ophthalmologists-optometrists-and-opticians/) - What are the Differences Between Opticians, Ophthalmologists and Optometrists? As you make a decision about the type of healthcare career you want for your future, it’s important to be knowledgeable. You can only make the best choice when you know what your options are and what different healthcare titles mean. For instance, you may be
- [Contact](https://opticiancertification.org/contact/) - For praise, suggestions, criticisms and proposals, please use the form below to get in touch with the team at OpticianCertification.org
- [Advanced ABO Certification](https://opticiancertification.org/advanced-abo-certification/) - Advanced ABO certification is available to eyeglass or contact lens specialists who have taken the advanced ABO exam, the advanced NCLE exam, or both.
- [The Optician’s Work Day](https://opticiancertification.org/the-opticians-work-day/) - Opticians will help patients choose eyewear, in accordance with their vision correction needs as specified by an ophthalmologist or optometrist.
- [Careers](https://opticiancertification.org/careers/) - An optician is an indispensable vision expert in the health field. The primary job of an optician is fit and dispense corrective lenses for individuals.
- [The Importance of Certification for Opticians](https://opticiancertification.org/the-importance-of-certification-for-opticians/) - The Importance of Certification for Opticians When considering making a career switch or deciding on your first career out of high school, you need to have all the information to make the best choice. For a career in healthcare, working toward becoming an optician is a great option. These eye care professionals work with and
- [Washington](https://opticiancertification.org/es/wa/) - Busca Escuelas de Óptica y Optometría en Washington en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [West Virginia](https://opticiancertification.org/es/wv/) - Busca Escuelas de Óptica y Optometría en West Virginia en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Vermont](https://opticiancertification.org/es/vt/) - Busca Escuelas de Óptica y Optometría en Vermont en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Wyoming](https://opticiancertification.org/es/wy/) - Busca Escuelas de Óptica y Optometría en Wyoming en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [North Dakota](https://opticiancertification.org/es/nd/) - Busca Escuelas de Óptica y Optometría en North Dakota en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Nebraska](https://opticiancertification.org/es/ne/) - Busca Escuelas de Óptica y Optometría en Nebraska en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [New Hampshire](https://opticiancertification.org/es/nh/) - Busca Escuelas de Óptica y Optometría en New Hampshire en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Rhode Island](https://opticiancertification.org/es/ri/) - Busca Escuelas de Óptica y Optometría en Rhode Island en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [South Carolina](https://opticiancertification.org/es/sc/) - Busca Escuelas de Óptica y Optometría en South Carolina en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [South Dakota](https://opticiancertification.org/es/sd/) - Busca Escuelas de Óptica y Optometría en South Dakota en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Maryland](https://opticiancertification.org/es/md/) - Busca Escuelas de Óptica y Optometría en Maryland en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Maine](https://opticiancertification.org/es/me/) - Busca Escuelas de Óptica y Optometría en Maine en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Montana](https://opticiancertification.org/es/mt/) - Busca Escuelas de Óptica y Optometría en Montana en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Hawaii](https://opticiancertification.org/es/hi/) - Busca Escuelas de Óptica y Optometría en Hawaii en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Idaho](https://opticiancertification.org/es/id/) - Busca Escuelas de Óptica y Optometría en Idaho en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Iowa](https://opticiancertification.org/es/ia/) - Busca Escuelas de Óptica y Optometría en Iowa en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Kansas](https://opticiancertification.org/es/ks/) - Busca Escuelas de Óptica y Optometría en Kansas en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Colorado](https://opticiancertification.org/es/co/) - Busca Escuelas de Óptica y Optometría en Colorado en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Delaware](https://opticiancertification.org/es/de/) - Busca Escuelas de Óptica y Optometría en Delaware en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Alaska](https://opticiancertification.org/es/ak/) - Busca Escuelas de Óptica y Optometría en Alaska en Segundos. Aprende Todo Lo Que Necesitas: Requisitos
- [Español](https://opticiancertification.org/es/) - Descubre tu nueva carrera profesional en OpticianCertication.org. Encuentra cursos de formación en óptica ofertados por escuelas cerca de ti
- [What Does an Optical Manager Do](https://opticiancertification.org/what-does-an-optical-manager-do/) - An optical manager is a dispensing optician who also manages in an optical practice. The optical manager runs day-to-day operations and works as an optician.
- [Glossary](https://opticiancertification.org/glossary/) - Glossary of Ophthalmological Terms ABCDEFGHIJKLMNOPQRSTUVWXYZ A Aberration Ablation Ablation zone ABO-NCLE Accommodation Addition age-related macular degeneration (AMD, ARMD) Altitudinal visual field defects Amblyopia AMD Ametropia Amsler grid Angle (Drainage Angle) Anisometropia Anterior Chamber Anterior ocular segment Antimetabolite Antioxidants Antireflective coating Anti-VEGF drugs Aphakia Aqueous Aqueous humor Argon laser ARMD Asthenopia Astigmatic Keratotomy Astigmatism Autosomal recessive
- [Terms and Conditions](https://opticiancertification.org/tos/) - TERMS AND CONDITIONS INTRODUCTION Welcome to OpticianCertification.org, which will be called “OpticianCertification.org”, “We”, “Our”, “Us” as applicable in these Terms and Conditions located at https://opticiancertification.org/ (which will be called “our website”). Any mention of “you” and “your” refer to any user of our website or related services. These Terms and Conditions govern your use and
- [Privacy Policy](https://opticiancertification.org/privacy/) - PRIVACY POLICY At OpticianCertification.org, we always ensure that we preserve the private information of our users. We provide this information to give you a break down on how your private information is well protected and secured by us. INFORMATION WE COLLECT When creating an account on OpticianCertification.org, you will be asked to register. The registration

## Categories

- [glossary](https://opticiancertification.org/category/glossary/) - glossary