Under rated comment. I've seen discussion of this in the past and it's been speculated that there might be a sizable portion of users of these drugs having HPPD

Under rated comment. I've seen discussion of this in the past and it's been speculated that there might be a sizable portion of users of these drugs having HPPD to some extent. I can attest personally to effects of HPPD on myself when I was younger: - It completely destroyed my night vision to the point that I couldn't see at all in low light. No eyes would never 'adapt' because the amount of visual snow (like a TV set to an untuned channel) would overwhelm what I could see - Massive halos around lights. Night time became dreamy. - After-image impressions of reading text. So it became a little harder to read. - It's very easy for me now to experience closed eyed visuals when I'm completely sober. It usually happens when I'm tired. These effects can happen with all hallucinogens and weed is psychoactive, too. People don't mention these nuances that visual changes may linger after the trip. You can imagine that some people might feel like they've just screwed themselves up forever. I felt that way for about a month before I got used to it. The effects above have mostly gone away now though. I really do think that these kind of drugs permanently change how you visually perceive the world. So I think your concerns are completely valid. I have heard stories about this exact topic online from people freaking out.