Optometry

Optometry

A health care profession concerned with eyes and related structures, as well as vision, visual systems, and vision information processing in humans. The practice of eye and vision care.

Industry: Eyewear; Health care

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Optometry

Spherical

Health care; Optometry

A contact lens design that is like a sphere and is fairly common; in contrast, toric lenses for astigmatism are football-shaped and are less common.

Spherical aberration

Health care; Optometry

A common higher-order aberration of lenses or the eye that causes glare and halos around lights at night.

Histiocytosis

Health care; Optometry

Abnormal proliferation of histiocytes (immune system cells). Common symptoms include bone tumours and skin rashes. If histiocytosis affects the eyes, it causes bulging.

Accommodation disorder

Health care; Optometry

Accommodation refers to the eye's ability to automatically change focus from seeing at a distance to seeing at near. Accommodation disorders have a variety of causes. Symptoms include blurred ...

Abnormally low level of sugar (glucose) in the blood, which causes dizziness, hunger, shakiness and other symptoms. Skipping or delaying meals, too-small meals, or a high level of physical activity ...

Choroidal neovascularization

Health care; Optometry

Abnormal growth of new blood vessels in the choroid. Choroidal neovascularization is commonly associated with macular degeneration, but it can occur as a result of other eye conditions as well. ...

Neovascularization

Health care; Optometry

Abnormal growth of new blood vessels, such as in an excessive amount, or in tissue that normally does not contain them, or of a different kind than is usual in that tissue. Also see angiogenesis.