Blue eyes here (light-skinned blonde - German and Irish descent), and I work outdoors in the sun all day. I'm pretty far south and we have an average of 292 sunny or partly sunny days. I wear sunglasses all day long because otherwise I squint.
I have heard the whole thing about sun exposure causing cataracts, but I also understand that it can be a blood sugar problem.
NY Times - Cataract Risk Factors - 9/10/2012