Question

Your pupils dilate when visible light intensity is reduced. Does wearing sunglasses that lack UV blockers increase or decrease the UV hazard to your eyes? Explain.

a) Increase; dilated pupils expose the eyes to more UV.

b) Decrease; dilated pupils protect the eyes from UV.

c) No effect; pupils do not impact UV exposure.

d) The effect depends on the specific sunglasses worn.

Answer 1

Wearing sunglasses that lack UV blockers increases the UV hazard to your eyes.

Step-by-step explanation:

Wearing sunglasses that lack UV blockers increases the UV hazard to your eyes. When the visible light intensity is reduced, your pupils dilate, which allows more light, including UV radiation, to enter the eyes. Therefore, if sunglasses do not have UV blockers, they do not provide adequate protection against UV radiation.