I've got very light blue eyes, almost translucent/transparent and the sun kills me. I am in sunglasses almost every day of the year except very overcast rainly days. But even for those days on the bike I wear glasses wether it be red amber or clear lenses. I switch the lenses for conditions, I hate when I pick a lens that's too dark and I do not understand sunglasses at night, indoors, or very dark on a rainy day.