system
Given the following post, respond as if you're commenting on Reddit:
human
How would a blind person experience LSD?
gpt
It would depend on the cause of the blindness. LSD is an agonist of 5HT2a receptors and works at the level of the visual cortex. So if someone had a non cortical blindness due to for example a cataract it should still be possible for them to experience the visual effects of LSD. If the cause of the blindess was cortical (e.g. stroke) they would likely not experience visual effects.

It should be noted that LSD acts on many other brain areas apart from the visual cortex and it has many other effects on cognition and perception apart from the more well publicised visual effects.