Stationary eye with moving pupil, is it possible?

I am making a sci-fi web-comic set on an alien world and I thought up an idea for an eye that works much like an eye from a mammal, but instead of moving the whole eye, only the pupil moves. This idea sprouted from the eyes of mantis, though their moving pupil is possible because of their compound eyes, I would like to know if my idea could be physically possible in a structural sense.

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Stationary eye with moving pupil, is it possible?

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