Which structure contributes the most to the total refractive ability of the eye?
A)lens
B)cornea
C) ciliary muscle
D) retina

Question

Quizplus · Accepted Answer

The cornea contributes the most to the total refractive ability of the eye, accounting for about 2/3 of the eye's total refractive power. The lens contributes the remaining 1/3. The ciliary muscle is responsible for changing the shape of the lens to allow for fine focusing, but it does not significantly contribute to the overall refractive ability of the eye. The retina is responsible for receiving and transmitting visual information, but does not have a role in refractive ability.

Which Structure Contributes the Most to the Total Refractive Ability