Exactly! I wear sunscreen all over my face and reapply it every 3-4 hours, but sunscreen would irritate the delicate under-eye area, which is precisely why, among other reasons, I want to wear sunglasses to prevent wrinkles.
There are dermatologists who recommend wearing sunglasses for exactly...
Is there an experiment you can do at home to test whether a pair of sunglasses blocks UVA/UVB wavelengths? It says total UV protection but that could mean anything and I don't want wrinkles.