Final answer:
Wearing sunglasses without UV blockers can increase the UV hazard to your eyes.
Step-by-step explanation:
Wearing sunglasses that lack UV blockers can increase the UV hazard to your eyes.
When visible light intensity is reduced, the pupils of your eyes dilate to let in more light. However, if the sunglasses do not block UV rays, the dilated pupils can still allow UV radiation to reach the sensitive tissues of the eyes, increasing the risk of UV damage.
Therefore, it is important to wear sunglasses that have proper UV protection to reduce the UV hazard to your eyes.