The muscle fibers of the iris can increase or decrease the amount of light entering the eye by expanding or contracting the ______________?
Correct answer: C. pupil
- A. lens
- B. cornea
- C. pupil
- D. fovea
Explanation
The iris controls the amount of light entering the eye by changing the size of the pupil. The lens focuses light, whereas the cornea covers the front of the eye and the fovea is a retinal region.
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