When we think of exfoliation, we normally think of facial scrubs and loofah to rub off dead skin cells, but there’s another kind of exfoliation: a harmful eye condition that increases the risk of cataracts and glaucoma as we age. New research suggests wearing sunglasses could be a key way to prevent the condition called exfoliation syndrome. Louis Pasquale, associate professor of ophthalmology at Massachusetts Eye and Ear, led the study.