Is the iris indispensable for the sight? Do people who lack an iris see?

I read about a rare syndrom called WAGR that affects about 1 person on 400 000. It has many symptoms: within them a lack of iris. I was just wondering what consequences it had: if it meant blindness.

Is the iris indispensable for the sight? Do people who lack an iris see?
The Iris is not responsible for sight, the retina is. The Iris functions to control the amount of light allowed into the eye. Theoretically, you can see without an Iris, just do not let anyone shine a flashlight into your face.... because not only would it blind you with no ability to control the intake of light, but with no Irises, you look like a mutant freak.
Reply:yes it is because the photoreceptors control the size of the pupil. if you can't control the pupil then you would be in serious trouble on a sunny day or during a dark night. it doesn't mean blindness, you would just have to wear sunglasses constantly outside and always carry a working flashlight. kind of inconvenient.

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