Is the UV Filtering Effect of Sunglasses Still the Same After Long-Term Use?
The study did not directly answer the question of whether UV protection deteriorates. The only sure way is to test your sunglasses.
Sunglasses with recommended protection will filter out all ultraviolet rays. Ultraviolet radiation can damage the surface tissue, cornea, and lens of the eye. Over time, UV damage increases the risk of developing cataracts, macular degeneration, and other eye diseases. These situations can reduce your vision.
In recent years, UV blocking technology has improved. Most sunglasses today have UV protection embedded in the lens, rather than being coated on the lens. If you are concerned about the age and safety of sunglasses, you can test them at an eyewear store equipped with an ultraviolet light meter.
If you are ready to purchase a new pair of sunglasses, Dr. Pettey has provided these tips to choose the most protective sunglasses: look for a label that says "100% UVA and UVB protection" or "100% UV 400 protection". Choose a larger frame that covers the eyes and surrounding skin. The frame wrapped around both sides of the face provides maximum protection.
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