Each layer of lens has a role in the refractive index of the entire lens. Which component has maximum refractive index?
Correct Answer: Centre of the lens
Description: Refractive index increases from 1.386 in the peripheral coex to 1.41 in the central nucleus of the lens. The anterior capsule surface of the lens has a greater refractive index than the posterior capsular surface (1.364-1.381 compared with 1.338-1.357). The change in refractive index from the surface of the lens to the center results from changes in protein concentration, the higher the concentration, the greater the refractive power. Ref: Ophthalmology edited by Myron Yanoff, Jay S. Duker, James J. Augsburger, 2009, Page 383.
Category:
Ophthalmology
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