Being a fan of psychological horror, I'm a little surprised at the current volume of reviews describing this film as incoherent and nonsensical. I Can See You is a film about obfuscation, and the cognitive filters which color our perspectives and influence our abilities to contextualize. (Think about the cleaning product designed to wipe away grime, and the camping trip which distances them from civilization and constant media stimuli) The film is like a swelling panic attack, where the players, and viewers slowly grow uncomfortable with the underlying motivations to certain behaviors.
The writing, cinematography, and sound design are impressive. As is the pacing. I actually felt that despite being surreal, it wasn't too difficult to grasp some of the underlying themes threading the film. Definitely a "filmmaker's movie," but as I am not a filmmaker myself, I still found it quite enjoyable.