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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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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 ...
higher order aberration (HOA)
Eyewear; Optometry
A common eye examination and refraction evaluates low order aberrations (LOA). These are commonly called sphere (myopia or hyperopia) and cylinder (astigmatism). Only a wavefront ...
humanitarian device exemption
Eyewear; Optometry
A Humanitarian Device Exemption from the Food and Drug Administration authorizes the use and marketing of a device that is intended to benefit patients in the treatment of ...
aphakic spectacles
Eyewear; Optometry
Thick, plus-powered eyeglasses that were once the standard correction for optical power following extraction of cataract. The glasses were cumbersome and greatly distorted ...
point spread function (PSF)
Eyewear; Optometry
Often used in wavefront diagnostic analysis. A single round spot of light becomes diffused when it passes through an aberrated element such as a human eye. Aberrations cause some ...
Sub-categories
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- Contact lenses (3070)
- Eye surgery (2811)
- Glasses (802)
- Optometry (16172)
- Sunglasses (524)