In summer, sunglasses are much more than a fashion accessory. A good pair of sunglasses can help protect your eyes from harsh light and UV radiation. However, there are so many kinds of sunglasses products, how to choose the right sunglasses when purchasing?
1. Look at the UV index
The UV index is simply the effect of filtering ultraviolet rays. Regular sunglasses are 100% UV-resistant, that is, we often see UV400 marked on the lenses. Normally, the ordinary glasses we wear are generally UV360-380, so there are obvious differences between sunglasses and ordinary glasses, and ordinary eyes cannot be used instead of sunglasses.
2. Look at the color
Many people think that black is the best color, but in fact, dark brown is the industry-recognized best color in sunglasses. It can absorb 98% of ultraviolet and infrared rays, and the color is mild and versatile. The most important thing is that brown can filter blue light. People who drive or often work outdoors can consider brown more.
3. Look at the shape
There are many shapes of sunglasses, including square-frame sunglasses, round-frame sunglasses, aviator sunglasses, cat-eye sunglasses, traveler sunglasses, etc.
Choosing the right shape is like choosing the right hairstyle, which has a great impact on the image of the whole person. Square sunglasses are more suitable for round faces and can increase the sense of contour. Round-frame sunglasses are suitable for square faces with a prominent contour.
4. Look at the frame
To protect your eyes from scattered light, the lenses of your sunglasses should be wider than the sides of your face, and the temples should be slightly wider. For glasses worn while driving, the temples need to be thinner so that they do not block the field of vision.
It's best not to buy a one-time molded plastic frame, which cannot be adjusted according to the wearer.
5. Look at the lens material
Sunglass lenses mainly include PC sheets, glass sheets, resin sheets, nylon sheets, etc. PC sheet is strong, not easy to break, and resistant to impact. It is a specially designated lens material for sports glasses, and the price is higher than that of acrylic lenses.
The glass sheet has a slightly higher clarity, but is heavy and easily broken, and is rarely used now. The resin sheet has lightweight, high-temperature resistance, strong impact resistance, and can effectively block ultraviolet rays.
When we choose our favourite sunglasses, sometimes we find that the life of our sunglasses is not long, and they have to be replaced after a long time. A large part of it is due to improper use. Today we will learn several maintenance methods for sunglasses so that everyone's favourite sunglasses can be with you for a longer time.
1. Correctly clean the lens
If the lens has stains, grease or fingerprints, use special lens wipes to remove dust or dirt from the lens. After wiping, it should also be washed frequently with lens cleaner. Never use your fingernails to remove spots from lenses. When there is grit on the lens, please rinse it with water, and then dry it with a special cloth or paper for glasses.
2. Correctly take and store glasses
Sunglasses should be carefully removed when not in use and stored in a glasses bag. Do not store with hard or angular objects to avoid scratching the lens. Also, place the glasses folded with the mirror side up. In addition, do not put the glasses in a very warm environment that is too cold or too hot, which will cause the frame to deform.
3. Stay away from chemicals
Try not to get your sunglasses on items that contain chemicals such as sweat, perfume, cosmetics, medicines, etc., as these items can damage the lenses and discolor or deform the frames. Once it sticks, please wash it in time.
