Question

Depressents often cause ________, making changes in brightness painful and temporality blinding ?

Answer 1

A. Faster pupil contraction and dilation

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Answer 2

Answer: Option B

Explanation:

Many depressants will slower down the pupil dilation contraction and dilation and because of this there is a painful and temporarily blinding.

This is because when there is less light in the room and once the pupil dilated because of dim, once there is a bright environment the pupil does not contracts very fast and because of intensity of light there is pain in the eyes.

The bright light causes temporary blindness in the eyes.