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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 
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.
equivalent power
Eyewear; Optometry
Power of an infinitely thin lens which will produce an image of a distant object of the same size as that produced by the actual lens.
eye refractometer
Eyewear; Optometry
Instrument used for continuous or digital readout used for measuring the refractive error of the eye.
fitting point height
Eyewear; Optometry
Vertical distance of the fitting point above the horizontal tangent to the lens shape at its lowest point.
Sub-categories
- Contact lenses (3070)
- Eye surgery (2811)
- Glasses (802)
- Optometry (16172)
- Sunglasses (524)