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

A natural reflex of the eyelids that close and open rapidly to moisturise and cleanse the eyes. Most people blink about 15 times per minute, but women do it more often than men. On average, babies ...

Apheresis

Health care; Optometry

A process in which blood is drawn outside the body, certain compounds are removed, and the blood is returned to the body. The technique has various applications, including: harvesting of needed ...

Punctal cautery

Health care; Optometry

A procedure that uses heat or laser energy to permanently close channels from which tears drain. Punctal cautery increases the accumulation of moisture as a treatment for dry eye. For more ...

Myelin

Health care; Optometry

A sheath made of proteins that covers nerve fibers. Myelin is essential to transmission of nerve impulses carrying information to and from various parts of the body. When myelin is destroyed or ...

Chalazion

Health care; Optometry

A small bump on the eyelid caused by an obstructed meibomian gland. Additional symptoms include light sensitivity, tearing and eyelid swelling. Chalazia are usually not painful unless they become ...

Histamine

Health care; Optometry

A protein that can be released as part of the body's immune system responses during an allergic reaction. Presence of histamine can lead to inflammation and swelling, which is why antihistamines ...

Sty

Health care; Optometry

A small red bump on the edge of the eyelid caused by an infected gland. Additional symptoms include eyelid pain, eyelid swelling, eye pain or discomfort, foreign body sensation, light sensitivity ...