Question

why does the pupil expand in dim light​

Answer 1

Explanation:

why does the pupil expand in dim light???

The colored part of your eye, called the iris, controls the size of the pupil, the opening that lets light through. In dim light, the iris will cause your pupil to expand, allowing as much light as possible into your eye. In bright light, the iris causes the pupil to contract so that less light can enter.

Answer 2

Answer:

The colored part around the pupil called the iris adjusts the size of the pupil. Its main function is to regulate the amount of light that enters the eye. In dim light the pupils dilate (open wider) so more light can enter. ... Because some nerve connections cross over to the other eye, both pupils contract in unison.