If you are constantly blocking 100% of UV light from entering into your eyes - newer contact lenses claim to do so - during many years, does that affect your health somehow?

I'm asking this because UV light has some functions when it comes to human skin, for example, production of vitamin D and regulation of sleep cycle. I wonder if it also has some important roles associated with the eyes.

Like, if someone spends many years wearing UV-blocking contact lens, it's like they are living inside a cave in terms of UV incidence - I'm not talking about visible light, which still passes through - or living in an endless dark winter. That doesn't sound natural to me, since humans have always received UV light in their retinas, even in cold climates, where the winters are long but they still have summer with UV light.