Which part of the eye is the coloured ring that controls pupil size regulating light entry?
A
Cornea
B
Retina
C
Iris
D
Lens
Correct Answer: Option C — Iris
Explanation:
The iris is the coloured muscular ring of the eye that controls the size of the pupil through the action of dilator and constrictor muscles ...
The iris is the coloured muscular ring of the eye that controls the size of the pupil through the action of dilator and constrictor muscles regulating the amount of light entering the eye.