I’m currently in the works of an alien design, one which lives in the ocean most of its life and occasionally surfaces in shallow waters to mate. It has 4 eyes, with each side of the head having a large eye in the front, and a smaller eye behind it and slightly lower. The larger eye(s) have a large round pupil in the middle, a smaller pupil near the top of the eye and forward, and another pupil below the center one facing down slightly. The smaller eye has a larger pupil facing forward, and another right around the center of the eye.
The main pupil at the large eye is used to look out for predators in the deep ocean. The two smaller pupils can see any predators below and above the creature but top pupil isn’t too powerful as it is often looking at the sun at the surface (I don’t know much about eyes like this) and the bottom pupil can pick up larger amounts of light as it is always looking for predators in the deep oceans. This eye can’t see much colour as it’s primary purpose is to see movement in the ocean (I think this is better than seeing full colour for this purpose).
The other eye’s front facing pupil is used to follow prey as this creature chases it though the ocean. The center pupil is constricted during this. This creature communicates with colour and very little sound so it uses both pupils when communicating to see others at multiple angles at once. This eye has 5 colour receptors including the ability to detect IR light (the sun is a red dwarf so I assumed this would be a good idea (again I don’t know enough about eyes to make a educated decision on this)).
So would a set of eyes and pupils like this be viable to a fast aquatic predator (who is also prey). Or would a set of eyes like this just make their vision a blurry mess of colours and light. I can talk in more specific details if need be to help with the question. Sorry if this is a strange or very uneducated question, I came here because I don’t have enough knowledge of eyes and the colour spectrum to figure this out. (Or would this be better asked in Biology? I’ve seen quite a few questions based of how eyes work here so I wasn’t sure)