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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 
measured power
Eyewear; Optometry
Dioptric power at a specified point on a spectacle lens by measurement using a given method.
major reference point
Eyewear; Optometry
That point on the front surface of the lens at which the dioptric power for the distance portion shall apply.
matching lens
Eyewear; Optometry
Lens fitted to a spectacle frame or mount to balance the weight and/or the appearance of the other lens. Also known as balancing lens.
Sub-categories
- Contact lenses (3070)
- Eye surgery (2811)
- Glasses (802)
- Optometry (16172)
- Sunglasses (524)