ABO END UNIT SCORE FILE 2026 NEWEST PART DATA FOR FAST FINISH

ABO END UNIT SCORE FILE 2026 NEWEST
PART DATA FOR FAST FINISH



⫸ 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
A + DBL + ED - PD
Frame PD - PD + ED
Dec. + ED
GCD = geometric center distance or A + DBL
PD = Pt. PD
ED = effective diameter
Dec. = Decentration


⫸ Focal length formula, diopters known. Answer: 1/Dioptic Power


⫸ Dioptic Power formula, foci known. Answer: 1/Focal Length (m)


⫸ Anisometropia. Answer: Difference of 2 diopters between OD &
OS


⫸ What is the Radius of a 1 diopter curve?. Answer: 530mm


⫸ Radius formula. Answer: 530/Power = R


⫸ Power formula. Answer: 530/Radius = Diop.


⫸ Vertical Decentration formula. Answer: Seg.ht. - B/2