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

permanent engraving

Eyewear; Optometry

Permanent engraving for the reconstruction of all reference points and measuring points of progressive lenses.

perimeter

Eyewear; Optometry

Instrument to assess differential light sensitivity in the visual field by detection of the presence of test stimuli on a defined background.

magnifier

Eyewear; Optometry

Lens system designed to produce an enlarged image by relative distance magnification. It may be a simple single element or compound multiple element system.

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 focal length of 17 mm ...

low vision telescope

Eyewear; Optometry

Telescopic optical system, Galilean or Keplerian that forms a magnified retinal image of an object.

lenticular portion

Eyewear; Optometry

That portion of a lenticular lens which has the prescribed power.

atoroidal surface

Eyewear; Optometry

Surface having mutually perpendicular principal meridians of unequal curvature, of which the cross-section in at least one principal meridian is not circular.