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Eyewear
Eyeglasses, goggles or other objects worn over the eyes, usually to aid vision or for protective purposes.
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Eyewear > Optometry 
photoreceptors
Health care; Optometry
Photoreceptors are receptor cells of the retina; tranduces light energy into electrical potentials.
fresnel prism
Health care; Optometry
A fresnel prism is a type of compact lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses. The design allows lenses to have large aperture and short ...
idiopathic
Eyewear; Optometry
Having an unknown cause. A medical condition that appears suddenly with no apparent explanation is considered idiopathic.
index of refraction
Eyewear; 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 ...
intermediate vision
Eyewear; Optometry
Generally refers to eyesight at approximately arm's length, used for tasks such as computer work and viewing the speedometer in a car.
intraocular lens
Eyewear; Optometry
Artificial lens that a cataract surgeon places in a patient's eye after removing the eye's natural lens. Like a contact lens, it has a built-in refractive power tailored ...
Sub-categories
- Contact lenses (3070)
- Eye surgery (2811)
- Glasses (802)
- Optometry (16172)
- Sunglasses (524)