Came here to say the same. A good example is low-quality sunglasses that don't block UV light. Pupils dilate when wearing sunglasses, because there's less light

Came here to say the same. A good example is low-quality sunglasses that don't block UV light. Pupils dilate when wearing sunglasses, because there's less light coming in. Dilated pupils let more UV light in compared to naked eye vision. Subjective experience might be relief, yet it's at the cost of long-term retinal health.