How to Determine if Your Sunglasses Are of Good Quality
For sunglasses to be effective, they must meet certain standards. Only high-quality sunglasses can properly block UV rays, blue light, and provide a comfortable visual experience. So, how can you tell if your sunglasses are up to standard?
UV Protection and Visible Light Filtration
Effective sunglasses should block 99%–100% of UVA and UVB rays and filter 75%–90% of visible light. To test this:- Stand in front of a mirror and wear the sunglasses.
- If you can easily see your eyes through the lenses, this indicates that the sunglasses are not dark enough and don't block enough visible light.
While some colorful, trendy sunglasses may not meet these standards, they primarily serve decorative purposes rather than protective ones.
Distortion-Free Lenses
Quality sunglasses should not cause distortion or visual distortion, as this can lead to discomfort or headaches.- To test: Hold the sunglasses at arm’s length and look at a straight line (such as a door frame or window). Slowly move the frame around and check if the straight line appears bent, twisted, or curved. Any distortion indicates optical defects and makes the sunglasses unsuitable.
Even Lens Color
The lens color should be consistent across the entire lens. If there is any noticeable darkening in one area, the sunglasses are likely subpar.
Comfort and Balance
The weight of the sunglasses should be evenly distributed between the nose and ears. When wearing them, adjust the frame and nose pads to ensure that they don’t pinch the nose or rub the ears. Additionally, the eyelashes should not touch the lenses when you blink.
Conclusion
Properly choosing quality sunglasses will not only enhance your visual comfort but also provide the necessary protection for your eyes. Always make sure your sunglasses meet these criteria to avoid any potential harm or discomfort.
