Can you compress and expand the pupil at will?

A 23-year-old student in Germany has learned that he can shrink and expand his eyelids, a move that has previously been considered materially impossible.

Scientists are also wondering how this is possible. The contraction and enlargement of the pupil of the eye is thought to be a completely automated natural system for a number of reasons.

And it happens when one goes in a bright or dark environment but this case shows that it doesn’t always happen and the above mentioned German student has so much control over his small file that he Can shrink and expand.

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