Optometry

Optometry

A health care profession concerned with eyes and related structures, as well as vision, visual systems, and vision information processing in humans. The practice of eye and vision care.

Industry: Eyewear; Health care

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Optometry

Reading portion

Eyewear; Optometry

That portion of a multifocal or progressive power lens having the dioptric power for near vision.

Reading cap

Eyewear; Optometry

Positive lens placed in front of a telescopic objective to adapt the device for viewing a near object.

Protective lens

Eyewear; Optometry

Lens designed to protect the eye from external hazards.

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 determined.