I've been searching all over Google and found many good sites with information, but I can't find the exact answers to my questions.
1. Would blindness through Methanol poisoning affect the appearance of a person?
2. There is a case of a woman losing her sight due to drinking vodka with a 20% methanol content. Isn't a high percentage like that technically illegal?
3. Does height, weight, age and sex play any part in the matter?
4. How would a teenager, like my protagonist, most plausibly lose his sight due to methanol poisoning?