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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

intermediate optical centre
Eyewear; Optometry

Optical centre of the intermediate portion.

inset
Eyewear; Optometry

Displacement of a multifocal segment from the distance reference point towards the nose, usually whithout reference to the effect on the near optical centres.

inorganic glass
Eyewear; Optometry

Material formed by the fusion of inorganic substances.

infrared radiation
Eyewear; Optometry

Optical radiation with a wavelength longer than that of visible radiation.

horizontal centre line
Eyewear; Optometry

Line located at equal distance from the two horizontal tangents of the boxing system.

illuminated magnifier
Eyewear; Optometry

Magnifier incorporating illumination.

hand telescope
Eyewear; Optometry

Telescope designed to be hand held.

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