Case report: Prolonged amelioration of mild red-green color vision deficiency following psilocybin mushroom use

Background Recent survey data indicate that some people report long-term improvement in color vision deficiency (CVD), also known as blindness, following use of psychedelics such lysergic acid diethylamide (LSD) and psilocybin. However, there are no objective reported the medical literature quantifying degree or duration CVD associated with psychedelic use. Case presentation Here we present case a subject red-green (mild deuteranomalia) who self-administered Ishihara Test to quantify 5 g dried psilocybin mushrooms. Self-reported from revealed partial peaking at 8 days persisting for least 16 post-psilocybin administration. This may have lasted longer, though subsequent observations confounded by additional substance Conclusion A single produce improvements extending beyond period acute effect, despite this condition typically resulting genetic defect. Systematic exploration possible phenomenon is needed confirm our findings, gauge their generalizability, determine mechanism action.