Neural Control and Coordination Question 65
65. Function of iris is to
[1993]
(a) move lens forward and backward
(b) refract light rays
(c) bring about movements of eye lids
(d) alter the size of pupil.
Show Answer
Answer : d
Hints & Solutions
(d) Iris controls the size of pupil by contracting or relaxing of its circular muscles. It controls the amount of light entering in eye.
