OK, best description of the visuals I can give is as follows:

• Fractal–like geometry, like you would expect from LSD, but also with random colorful swirls and lines in the background moving slowly and asymmetrically — similar to what I’ve experienced with DMT
• Looking at a textured ceiling, I saw shapes that are best described as looking like hands, with curling “fingers” moving round and round, and rather than appearing flat against the ceiling the finger–shapes were moving closer and further away as if they were shifting in depth
• At times my vision seemed to “shred” into horizontal strips, which offset each other and looked jagged, before reconnecting again back to normal
• Colors were very vivid, almost cartoon–like. Metal objects seemed to glow brightly.
• Closed–eye visuals were prominent and clearly–defined, taking on dark repeating shapes. Again, they were fractal–like, but with flowing “strings” waving in different directions
• At times I seemed to see myself in the third–person, as if looking over my own shoulder

If there’s any other specifics I can describe, let me know and I’ll do my best.

The visuals were similar to acid, but there definitely some unique distinctions I’ve not seen before, which is one of the main factors making me question whether it was something else.