Home > Terms > English, UK (UE) > Cylindrical test lens

Cylindrical test lens

Lenses with cylindrical faces which are used to calibrate the axis marker and axis indicator with respect to the adjustment orientation of the rail.

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  • Part of Speech: noun
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  • Blossary:
  • Industry/Domain: Eyewear
  • Category: Optometry
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Related terms

cylindrical test lens
Eyewear; Optometry

Lenses with cylindrical faces which are used to calibrate the axis marker and axis indicator with respect to the adjustment orientation of the rail.

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optical centre
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For practical purposes, the intersection of the optical axis with the front surface a lens.

ophthalmoscope
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An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

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