Contact lenses

Contact lenses

Industry: Eyewear

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sphere

Eyewear; Optometry

Term meaning spherical refractive error of hyperopia or myopia.

Named for engineer Charles R. Munnerlyn, Ph.D, who pioneered the technology for vision correction based on the excimer laser. This is the basic formula to calculate the amount of tissue that needs to ...

starbursts

Eyewear; Optometry

A known complication of refractive surgery that causes images from light sources to blur with spikes radiating out from the center. Starbursts also occur naturally without refractive surgery.

mydriasis

Eyewear; Optometry

Pupillary dilation.

convex lens

Eyewear; Optometry

A lens with a bulging surface like the outer surface of a ball. Convex lenses are plus power lenses and are used to correct hyperopia or farsightedness. Also used for reading glasses as required for ...

stereopsis

Eyewear; Optometry

The ability to perceive three-dimensional depth due to the distance between a person's two eyes.

cornea

Eyewear; Optometry

The outer, transparent, dome-like structure that covers the iris, pupil, and anterior chamber. The cornea provides approximately two-thirds of the optical power of the eye. Light passes into the eye ...