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The abbreviation for light amplification by stimulated emission of radiation.

The focused adjustment of one eye for near vision and the other eye for distance vision.

An intraocular (inside the eye) lens implant, alike to a bifocal or trifocal lens in your glasses, that provides clearness of vision at more than one distance.

The unusual response of sensitive eyes to contact with allergens and other irritating substances.

The abbreviation for photorefractive keratectomy which is a practice involving the removal of the surface layer of the cornea (epithelium) by mild scraping and use of a computer-controlled excimer laser to reshape the stroma.

The black, round area in the midpoint of the iris that regulates the amount of light incoming the eye by constricting and dilating.

Imperfections in the focusing ability of the eye, for example, hyperopia, myopia, and astigmatism.

Any surgical procedure that attempts to decrease the patient’s refractive error (irregularities in the eye that prevent correct focus).

A return to the original refractive state.

Transmitter at the posterior of the eye that encompasses blood vessels and nerves and sends imageries to your brain.