glossary

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.

An eye drop or ointment which dilates the pupil.

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.