Though Bacardi 151 can sure screw with your vision temporarily, you speak the truth about the methanol induced blindness, it's not just a temporary condition. I saw two cases when doing a residency in inner-city Chicago. Sad to see what individuals will do to get their high.
Btw, Stuart I like your Mumbo Jumbo so keep with it. I've always said that one of the reasons I enjoy bopping into this particular forum is the civility shown among the members, unlike many Roadie forums where it can get downright nasty. You can agree to disagree on a subject as subjective as stoves but personal attacks on the individual should never need occur.