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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 
progressive surface
Eyewear; Optometry
Surface, which is not rotationally symmetrical, with a continuous change of curvature over a part or whole of the surface.
prism reference point
Eyewear; Optometry
For a progressive power lens or semifinished lens blank, that point on the front surface stipulated by the manufacturer at which the prismatic effect of the finished lens is ...
projection perimeter
Eyewear; Optometry
Perimeter which utilizes a projection system to create the test stimuli on the background.
polarizing lens
Eyewear; Optometry
Lens showing differential luminous absorbtion according to the plane of polarizing of the incident light.
predecentration
Eyewear; Optometry
Distance, horizontal and/or vertical, between the design reference point and the geometric centre of an uncut spectacle lens.
primary position
Eyewear; Optometry
Position of the eye relative to the head looking straight ahead at an object at eye level.
Sub-categories
- Contact lenses (3070)
- Eye surgery (2811)
- Glasses (802)
- Optometry (16172)
- Sunglasses (524)