I've recently seen a post online stating the question: "What would happen if a blind person tried hallucinogenic drugs." (This entails 5-HT2A antagonists like Lysergic acid and psilocybin, the most common hallucinogenic drugs)

Do blind people have the possibility to experience visual hallucinations and does this differ if someone is born blind or became blind sometime after early childhood?

  • Great question, though this might get a better answer on biology SE.
    – John
    Oct 3, 2016 at 9:01

2 Answers 2


I guess the best way would be to convince a blind person to take some psilocybin mushrooms or LSD. Perhaps they would actually see some fractals and stuff, since those visions are generated in the corresponding areas of the brain. Even if not, then the blind person would definitely feel the psychedelic effects: the acute perception of self and the surrounding.

Upd: found this blind man telling about psychedelic experience https://www.youtube.com/watch?v=-uXDUIC2FWM

  • 2
    Hi @user2361. Thank you for your answer, which is very interesting. While I do agree with several points in your post, would you mind adding some references to support your claims? (in accordance with Health SE policies health.stackexchange.com/help/how-to-answer) Thanks, best regards Oct 2, 2016 at 17:29
  • @user2361 Unfortunately I do not know any blind people, much less those willing to be subject to an experiment along those lines. I just wonder if there are case studies on this subject.
    – Hyfnae
    Oct 2, 2016 at 18:07
  • I would be really happy to provide any references to psychedelic use in blind people, hover I can't find any studies on pubmed. Although, such studies would be interesting and contributing to our understanding of the brain functioning.
    – user2361
    Oct 2, 2016 at 18:16
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    Guess what, I've actually found a blind person telling about experience with LSD. youtube.com/watch?v=-uXDUIC2FWM
    – user2361
    Oct 2, 2016 at 18:23

There are TONS of trip reports on various sites—namely Reddit, Erowid, and DMT-Nexus. And while much of this is anecdotal evidence, one could do a lit review of these as a first step toward a more rigorous study.

And several of those studies have been done as well. A link to one such study is mentioned in the following Reddit thread: if your (sic) blind and take acid or shrooms.... The actual article can be found on LiveScience.com.

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