Contact lenses

Contact lenses

Industry: Eyewear

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Contact lenses

Halos

Eyewear; Optometry

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

Haptics

Eyewear; Optometry

Extensions of plastic from the lens portion of an intraocular lens (IOL) that position and centre the IOL within the eye.

An opacification or cloudiness of the normally clear cornea. Any build up of inflammatory infiltrates (white blood cells), extra moisture, scar tissue, or foreign substances (like drugs) can cause a ...

Antimetropia

Eyewear; Optometry

A condition in which one eye is myopic and the fellow eye is hyperopic.

Pinguecula

Eyewear; Optometry

A yellowish spot seen on the white of the eye at the junction of the clear cornea and white sclera of the eye. These lesions are usually caused by ultraviolet radiation. The white surface of the eye ...

Hemeralopia

Eyewear; Optometry

Day blindness. Loss of one half of the visual field in one or both eyes. Often caused by clouding or opacity of one or more of the normally clear ocular tissues.

Pinhole glasses

Eyewear; Optometry

Used in a diagnostic setting to differentiate whether reduced vision is secondary to uncorrected refractive error or to disease/amblyopia. By eliminating the peripheral light rays and concentrating ...