Sunglasses are absolutely helpful in limiting UV exposure to your eyes. This is beneficial for reducing cataract formation and the development of macular degeneration. We recommend polarized lenses, as well, to maximize the clarity of the lenses in environments with a lot of glare.
Interestingly enough, clear lenses with UV protection (such as our Crizal Non-Glare coated lenses) may provide more protection because they block UV and allow a brighter environment, which makes your pupil smaller. Smaller pupils then reduce the amount of UV that can enter your eyes.
When in doubt, just keep the sun out… of your eyes!