https://en.wikipedia.org/wiki/Floater

https://en.wikipedia.org/wiki/Hallucinogen_persisting_perception_disorder

Hallucinogen persisting perception disorder (HPPD) is a non-psychotic disorder in which a person experiences lasting or persistent visual hallucinations or perceptual distortions after using drugs.[1] This includes after psychedelics, dissociatives, entactogens, tetrahydrocannabinol (THC), and SSRIs.[2][3] Despite being a hallucinogen-specific disorder, the specific contributory role of psychedelic drugs is unknown. Symptoms may include visual snow, trails and after images (palinopsia), light fractals on flat surfaces, intensified colors, altered motion perception, pareidolia, micropsia, and macropsia.[3] Floaters and visual snow may occur in other conditions.[4][5]

If you look at the sky or something bright and uniform in colour, you can often see floaters in the inside of your eyeball. They also move as you try to look at them.

I would suggest not looking though, because once you know there their some people get bothered by it.

My first thought was fractal visiuals from mushrooms.

https://youtu.be/__1Oj7nzvPo?si=Ofdg9Fi3LAKzNfGX

Do you not notice the gunk that floats inside the fluid within your eye? There's no possibility that the cells in your eyes never shed.

It makes sense to me why there are so many obliviously ignorant people in this world; you have this shit inside your eyes, impossible to miss, access to the sum of all human knowledge in your hand, and yet you still must ask for someone to fucking spoon-feed you the information to you.