Does the degree of nearsightedness affect the size of the iris?

Question

My friends who have really bad eyes, as in their eye degree is like -8.00 to like -9.00, have really large irises. Does the size of the iris reflect on how bad your eye sight is? Or does it not relate to one another?

Answer 1

No.  The iris has nothing to do with near-sightedness.  Either the cornea has grown too round or the eyeball too long (or a combination of both) for the image to focus in the proper place.  In either case, it falls short of the back of the eye and concave lenses are needed to refocus the image in the proper place.

Answer 2

No relation.

It's the shape of your overall eyes.