When a person enters a dark room from bright light he is not able to see clearly for a little while because the?
Correct answer: C. Iris is unable to dilate the pupil immediately
- A. Eye is unable to adjust itself immediately
- B. Retina becomes insensitive momentarily
- C. Iris is unable to dilate the pupil immediately
- D. Distance between the lens and retina take time to adjust
Explanation
In bright light, the iris keeps the pupil constricted; entering darkness requires time for the pupil to dilate and for the retina to adapt. Thus the immediate problem is delayed adjustment of the iris and pupil.
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