The screen behind the eye lens is called the
retina
Correct Answer- C
Explanation for incorrect options
A- The pigmented tissue that surrounds the pupil in the center of the eye. The iris regulates the size of the pupil, allowing more or less light to enter the eye.
B- Ciliary muscles regulate the flow of aqueous humor into Schlemm's canal and govern accommodation for viewing objects at different distances.
D- Pupil allows light into the eye by dilating or constricting. It shrinks in bright light and grows in size as the amount of light drops.
Hence, the correct answer is the option C retina.