There’s a woman who catches the same train as me every other day and she has a medical condition that I’ve never seen before -her eyes (including pupil and iris) are almost completely white as if her eyeballs are filled with milk. What really bakes my noodle is that she doesn’t use a cane or guide-dog and walks about with confidence so I’m pretty sure she can see but I guess it would be patchy at best. I am curious to know what is going on, but it would be rude and embarrassing for me to go over and say “hey what’s the deal with your eyes”. So what’s the straight dope?
Possibly some kind of Albinism?
Julie
I’d vote for the coloured contacts (heh, funny - I just started a thread about these in IMHO).
Of course if ‘walking about with confidence’ includes things like:
-Not bending her legs at the knee
-Keeping both arms outstretched
-Saying “Brains…must…eat…braaaaains”
Then there might be an alternative explanation.
They’re definitely not contacts, would you dress in formal business atire go to work everyday in an office and have bizzaro streaked white contacts everyday? I doubt it. Plus the white discolouration is not consistent, it’s full of thick and thin streaks and globs, plus her eyes look unusually deeply set into their sockets, there’s patches of blood, and one eye points distinctly off-center. No one would pay to look like that.
If her eyes are entirely white, how can you know which direction they’re pointing?
…maybe she is just really good at being blind? When my great-grandmother was pronounced legally blind, she got a handicapped sticker for her car so she could park closer.
Can you see a pupil. I have a friend who’s irises are such a light shade of blue, that in the right light they appear white and all you see is a pupil. She happened to be in just the right light the first time I met her, it was rather odd.
Cataracts maybe?
I have nothing to contribute except this:
Dr. Boop? Ha! 
I had a friend who lived on the Apache reservation in Arizona most of her life. She had white spots in her irises that she said had to do with being in the desert for so long. The sun damages some of the tissue somehow. Hers weren’t nearly as extensive as the woman you’re discribing but I’m wondering if she is Native American or grew up in a similar area. The Apaches down there are so poor that sunglasses or any kind of eyecare is hard to come by for a lot of them. Just thinking about it makes me sad.
Oh, and I don’t think it’s cataracts as they apparently affect the lens area only.