Well, there are no albino corns, to get picky about terminology for a moment, reptiles lacking melanin are properly referred to as amelanistic. I'd reckon I currently have at least 50 snakes that can count amelanism among their genes. I have only ever had one to develop cataracts, and it was a blizzard that I kept under UVB for a year, to see if it grew any differently than a sibling without lighting. I learned a painful lesson, but that is the only eye damage I have seen in hundreds of snakes with this mutation over many, many years. I believe except for avoiding predators or filtering out UVB radiation -both situations they should avoid in captivity -amelanistic corn snakes are as hardy as their normal counterparts.