A member asked:

How could having more than one pupil affect your eyesight?

A doctor has provided 1 answer

Alters focus: Having more than one pupil, which is unusual, comes from trauma or a few rare degenerative conditions of the iris. If the two pupils are close to each other, than this would produce two focus points on the retina - a condition of doubled vision,. This is usually poorly tolerated and your ophthalmologist has ways to fix this.

Answered 2/13/2015

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