I'm designing an intelligent alien creature that lives in the jungles of a tidally locked planet, a little bit more massive than Earth, and which orbits a red dwarf. One of the things I designed about my creature is that they have three pairs of light green, (seemingly) pupiless, elongated eyes. For reference, here's an early sketch of what I imagine them to look like:
Now my question is, are eyes like these biologically possible? I thought about giving them compound eyes since many insects have strange shaped eyeballs, but my creatures are large land-based predators, so compound eyes might not be ideal for analyzing the environment. Apart from that, despite their insectoid appearance they're actually vertebrates and I'm not even sure if a vertebrate could evolve with compound eyes (Note: I'm not 100% certain with my decision of making them vertebrates or not yet, please tell me which do you think works best). As for the lack of pupils, I imagined something like a protective covering over the eyes like snakes have that just makes it seem like they lack pupils from an outside perspective, but I'm not sure if that would block their vision and how they would see the world. To sum it up, are eyes like these possible to evolve naturally, and if so why?