Sunglasses are often regarded as accessories that give a stylish boost to one’s outfit; but before seeking distinguished appearance, we must consider the healthiness of sunglasses. Since you are supposed to wear them outdoors whenever the sun is in the sky, which is throughout the year, you must choose sunglasses that are both comfortable and protective.
Similar to our skin that needs sunscreen to protect it against the harms of UV rays; our eyes and their surrounding tissues need sunglasses to protect them against the same rays. The habit of wearing shades should be developed at a young age because children’s eyes are more prone to sun damage as they are still developing. Protecting your eyes begins by choosing the right glasses. Here are 7 signs of healthy sunglasses you should know:
7. Fully Covering
To make sure that the least amount of UV rays gets to your eyes, go for wraparound sunglasses that prevent light from hitting your eyes from the sides. Otherwise, pick sunglasses that have large lenses and wide temples and come down to the cheekbones for similar but a little less protection. Therefore, the bigger your sunglasses, the better protection they provide.
6. Block UVA and UVB Completely
Look at the labels on the lenses of your shades to ensure that they shield you completely from UV harm. Good lenses would meet ANSI Z80.3 blocking requirements, block 99% to 100% of UVA and UVB rays or provide UV 400 protection which blocks wavelengths down to 400 nanometers so that the tiniest UV rays don’t reach your eyes. *ANSI stands for American National Standards Institute.
5. Fit Effortlessly
Good sunglasses should sit on your nose and ears comfortably without the need of constantly pushing them with your fingers. Moreover, the proper distance between the glasses and your face should be set so it is close enough to your eyebrows to prevent light from above, yet the lenses shouldn’t come in contact with your eye lashes.
4. Free of Optical Defects
You might assume that you get a crystal clear vision from a pair of sunglasses, but with a little test suggested by the FDA, you might discover the opposite of that. Some cheap lenses can be highly distorted and to figure out its quality can be checked by focusing on a vertical line while moving your head back and forth and moving your eyes across the lens. You will uncover an optical defect if you see a wiggle in the line.
3. Have Minimal Color Distortion
The darkness of the sunglasses does not determine its effectiveness to block UV rays because the coating that blocks ultraviolet radiation is transparent. However, the hue of the lenses is essential as it affects color perception. You might face trouble while trying to figure out changes in traffic lights while wearing rose or yellow tinted glasses. Better alternatives while driving would be brown, gray or green glasses as they minimize color distortion.
2. Are Polarized “For Being near Shiny Surfaces”
If you spend a lot of time near highly reflective surfaces like water bodies or snow covered lands while practicing activities like skiing, polarized sunglasses are a good option for you. Polarized lenses filter out sunlight that is reflected off the pavement or water surfaces but keep in mind that they have nothing to do with UV protection. Polarized lenses also make it difficult to read from LCD screens and devices like your cell phone, so you might have to take them off several times.
1. Protect the Eyes from Grave Danger
Although this is not a sign of good sunglasses, it is important to know the dangers that our eyes are vulnerable to without shades. UV radiation can harm different parts of the eyes like the cornea and the lens thus diminishing eyesight. Always better be safe and sorry and protect your precious vision with proper eyeglasses.