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 measure of how much a substance reduces the speed of light waves passing through it. The index of refraction (or refractive index) of a substance equals the ratio of the speed of light in a vacuum ...

Strabismus

Health care; Optometry

A misalignment of the eyes: the eye don't point at the same object together. Crossed eyes (esotropia) are one type of strabismus; "wall-eyes" (exotropia) are another. The exact cause is unknown, ...

Corneal collagen cross-linking

Health care; Optometry

A medical procedure that involves the application of riboflavin (vitamin B2) eye drops and ultraviolet light to the eye to strengthen corneal tissue in an eye affected by keratoconus.

Photoreceptor

Health care; Optometry

A light-sensitive cell found in the retina. Photoreceptors in the human retina are classified as cones and rods. Cones are located in the central retina (the fovea) and control colour vision. Rods ...

Ophthalmologist

Health care; Optometry

A medical doctor (MD) who specialises in the eye. Ophthalmologists perform eye exams, treat disease, prescribe medication, and perform surgery. They may also write prescriptions for eyeglasses and ...

Patau syndrome

Health care; Optometry

Also called Trisomy-13. Condition caused by an extra, third copy of chromosome 13. Symptoms include severe mental retardation, a small head, microphthalmia, a cleft lip or palate, heart defects and ...

Temporomandibular joint disorder

Health care; Optometry

Also called TMJ or TMD disorder. Problems with the jaw, jaw joint and surrounding muscles that control jaw movements such as chewing, which result in pain, swelling and difficulty with jaw movement. ...