i would consider getting your eyes checked if you haven't. sometimes it can be how your brain and eyes process/see light or could be something else like potential retinal detachment or another eye issue.

i have floaters in my eyes and sometimes also see things out of the corners of my eyes, lights, what i think are things (shadows) moving (sometimes think it's my cat when it's not), and other random things.

but i'd have your eyes checked just in case it is something else and not dissociation related.