As has been stated, Albinos have a sensitivity to light but they do not have any problem seeing. This is a myth that comes up all the time with albinism in most every species, it originates from the fact that most Albinos people are familiar with are things like deer and horses and humans and other diurnal animals that are rendered blind over time due to the aforementioned sensitivity to light and UV exposure. Snakes that live in boxes, and that are primarily nocturnal in the wild, are not getting their corneas burned out from UV and so they can see just fine.