Possible Eye Defect in Australian Shepherd Puppy?

We are looking at purchasing this 5 week old Australian Shepherd. She is a blue merle. Dad was black tri, mum was red merle.

We met her and after swooning over the photos I noticed her eye to be a bit off. They appeared to not focus in the same direction and one pupil is much larger and appears to be a very irregular shape.

I’d like to educate myself on what it could be. Any advice on the possible eye condition would be appreciated.

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