In the book, "The Leopard Gecko Manual" it states that you shouldnt have albinos in the light often because there eyes are more sensative then other leos.
Heres my philosophy(or however you spell it), If we can go blind, a cat can go blind, fish can go blind, im pretty sure anything can be born with some defect causing blindness or get blind from a illness.
Correction, anything that uses a eye can go blind, theres always that chance of error.
If you believe something is wrong with your leo, I say trust your instincts and get him checked out. As they say, better safe then sorry.
Good Luck 
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Normal - Male - Ninja
High Yellow - Female - Ninjete