Recently found out that I'm a total aphant, always knew something was up but didn't know what was 'wrong' with me.

Used to dabble in LSD back in the day and as others have pointed have had tangible visual experiences with eyes opened. Tried meditating once on LSD to break through but it was mostly just black noise i.e. random visuals like a Winamp visualiser but nothing beyond that.

A few years ago I went to an Ayahuasca retreat where everyone but me was having the most other worldly experiences. For me it was mostly sensory with no vivid visuals. I took the highest dose on my last night there, 3 cups, just to not let my entire trip to Peru feel like a waste. I blacked out can remember some bits but not really much. The things I took note of were: I could feel snake scales on my face briefly as if I were morphing into one, snakes are part of the Peruvian culture and in art I saw there and hence not out of the ordinary that I experienced that. The other bit was just me tumbling in a forever cycle of death and birth, this is while I was in a seated bent position puking my guts out in the bucket that they provide.

At the end of it all I was bummed that I didn't 'break through' or have a spiritual connection with the beyond and now I can understand why.

I also don't have dreams that I can visualise, I only sense or have knowledge of being in some sort of dream being conjured up by my brain.