Does uv protection in sunglasses decrease over time?

Yes, UV protection in sunglasses can decrease over time due to factors such as wear and tear, exposure to heat, and environmental conditions. The coatings that provide UV protection may degrade, leading to reduced effectiveness. It's advisable to periodically check the condition of your sunglasses and replace them if they show signs of damage or if you’re unsure of their UV protection level. Regularly replacing older sunglasses ensures optimal eye protection.