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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 
mean reflectance
Eyewear; Optometry
Mean value of the spectral reflectance over a wavelength range 400nm to 700nm, giving a physical rather than a visual quantification of the surface reflection.
magnification
Eyewear; Optometry
The ratio of the viewing angle of an object when observed through a magnifying system with the image at infinity to that of the object when observed by the naked eye at a ...
magnification of photography
Optometry; Optometry
Ratio of the size of the image on the photosensitive target to that of the fundus at the centre of the photographic field, assuming that the eye is emmetropic and that it has a ...
lenticular portion
Optometry; Optometry
That portion of a lenticular lens which has the prescribed power.
low vision telescope
Optometry; Optometry
Telescopic optical system, Galilean or Keplerian that forms a magnified retinal image of an object.
illuminating system
Eyewear; Optometry
The light source and associated lenses, mirrors and/or prism which serve to provide and project light into or onto the patient's eye.
Sub-categories
- Contact lenses (3070)
- Eye surgery (2811)
- Glasses (802)
- Optometry (16172)
- Sunglasses (524)