How does methanol make you go blind?

Methanol is rapidly absorbed and completely converted into formic acid via formaldehyde under the action of two enzymes - alcohol dehydrogenase and (form)aldehyde dehydrogenase. read more

When methanol is ingested, the alcohol dehydrogenase oxidizes it into formaldehyde, which attacks the optic nerve. The problem is that, when ingested, your body doesn't know what to do with the formaldehyde, so it isn't eliminated by an enzyme. read more

No, moonshine does not make you go blind, but high doses of methanol certainly can. Unless you really screw up a batch, you should not end up with concentrations of methanol high enough to do any damage (other than give you a bad hangover). read more