ABO numbers, math, formulas
ABO numbers, math, formulas Prentice's Rule - ANSWER-P = f x c P = amount of prism correction f = lens power (in diopters) c = decentration (the distance between the pupil centre and the lens's optical centre, in millimeters) Cornea IOR - ANSWER-1.37 Tear Film, Vitreous IOR - ANSWER-1.33 Crystalline lens IOR - ANSWER-1.42 Optical Standard index of refraction - ANSWER-1.53 Crown Glass index of refraction - ANSWER-1.523 High index IOR - ANSWER-1.74 CR-39 IOR - ANSWER-1.49 - 1.50 Poly index of refraction - ANSWER-1.586 Air IOR - ANSWER-1.00 How fast does light travel through air - ANSWER-186,000 mi/sec Minimum Blank Size (MBS) formula - ANSWER-(GCD - PD) + ED
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