Diopter Prescription, Focal Length, and Magnification for Eyeglasses
Author: kegasaExecutions: 72
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focus = 1000/diopter;
magnifyingPower = diopter*0.25+1;
magnifyingPower = diopter*0.25+1;
| diopter | |
| focus | mm |
| magnifying power |
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Lens focal length: focus mm
Lens magnification: Magnification relative to the shortest focal length of an adult’s unaided eye (250 mm = 0.25 m)