What's the deal with UV light absorption through the eyes? I read a few years back that it is essential to let some sunlight into our eyes, especially during the winter months, yet having spoken to people about this, most of them are adamant that their opticians have told them that any strong sunlight whatsoever into the eyes is very damaging.
Paleolithic man did not wear sunglasses or baseball caps of course, but even though he probably avoided the midday sun, at other times he would have not been able to avoid sunlight in his eyes.
Last year I did not wear sunglasses and my eyes became accustomed (mostly to reflected sun) after a few weeks and my intolerance of bright lights really improved, but do the benefits of not wearing sunglasses outweigh the dangers?
On the flip side of this, is there any evidence to suggest that wearing sunglasses all year round (as some people do nowadays) is detrimental to our health?
And lastly, do people with blue eyes need more sun eye-exposure than brown-eyed people?