###Rationale: Cornea The cornea is the first and most powerful refracting surface of the eye. Light passes through the transparent cornea on its way to the retina. It has a greater curvature than the rest of the eyeball and a refractive power of approximately 44 dioptres.

###Answer: OPTION A IS CORRECT.
###Question: According to biophysics, in which pa of eye does maximum refraction occur?
###Options:
A. Cornea
B. Aqueous humor
C. Centre of the lens
D. Periphery of the lens
