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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.

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.

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.