@FMR Sorry to jump in, but I’m not sure I’m following the arguments in the recent posts here. I think that tinting and UV protection are entirely independent features (UV is not part of the visible spectrum after all), and in fact, there exist cheap tinted lenses that have no particular anti-UV coating, which as pointed out are more dangerous than not having any tint at all, due to the dilated pupil allowing in more UV rays.
@halmadavid I agree that we didn’t evolve to need glasses or UV protection, but I prefer to err on the side of caution with regards to cataracts/glaucoma (and also because who knows if our modern lifestyles make us more susceptible to certain UV-caused maladies); in any case UV rays (incident from the side or reflected from the back of the lens) still enter the eyes even while wearing glasses anyway. (Some lenses have UV coatings only on the front side, while others on both sides.)
OTOH though, I try to get about 30mins each week of full-body sun exposure (daytime swimming), in the belief that the body produces not just Vitamin D, but also its synergists and whatever undiscovered goodness, from some sun exposure.