At that point you are not experiencing better visual acuity -- half an hour or a day later, however, the story might be different.
There is a clinic in Israel that publishes record numbers of case reports about young people who took L.S.D. or such and now they perceive things differently so they are exempt from the draft. I think they are a bunch of quacks and malingers unlike the town in Poland where the drunks discovered that 1-propanol and 1-butanol are possibly safe and certainly more cost effective than 1-ethanol; reports from the e-room confirm the toxicity is similar to that of ethanol.