how do enemies see you in the dark

[Maria]

does murkof replace all their inmates eyes with cat eyes?

[Ceries]

Not sure.

Although its weird when replaying this after playing through Outlast Trials since enemies couldn't actually see you in the dark which is more realistic and they can still detect you if you're close or even touch them.

[Kenpoleon Bonaparte]

I think it's a random roll-of-the-dice type of AI check. Sometimes, I've hidden in a near-pitch-black room and the variant that's nearby (or already chasing me) walks in and comes right at me. Other times, I've crouched down in just a shadowy corner of a hallway or room and the nearby (or chasing) variant simply walks right by me and keeps going.