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

Focusing telescopic device

Eyewear; Optometry

Device intended to be adjusted by the user for a range of object distances.

Free working distance

Eyewear; Optometry

Distance between the most anterior portion of a telemicroscope and the object.

Fusion

Eyewear; Optometry

Combination of the image impressions of the two eyes.

Geometrical centre

Eyewear; Optometry

Intersection of the horizontal and vertical centrelines of the shape of the lens blank or uncut lens.

Gradient tinted lens

Eyewear; Optometry

Lens having a controlled variation in tint (transmittance and/or color) over the whole or part of the surface.

Hand magnifier

Eyewear; Optometry

Magnifier intended to be positioned and supported by the user's hand without artificial support.

Field of view

Eyewear; Optometry

The angular field which is visible to a user when the entrance pupil, measured from its centre, is 12 mm behind the back surface of the ophthalmoscope.