How would a person see with an adjustable cross-shaped pupil?

I know that this would, perhaps, be biologically impossible, but suppose it's possible, how would such person see?

I know that cats have a vertical adjustable pupil and goats have a horizontal one, mixing both would be something kind of like this (I made a trashy editing on a cat eye just to demonstrate):

It wouldn't be permanent, i.e., the pupil would be able to adjust itself from a cross-shaped pupil to a round one.

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How would a person see with an adjustable cross-shaped pupil?

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