Ultraviolet rays are strong in summer, so whenever you want to go out, sunscreen, sunscreen clothes, and umbrellas are all complete equipment. I wish I could wrap myself so that I could not recognize them.
But there is a position that is often overlooked, yes, our eyes.
Ultraviolet rays always penetrate our cornea and lens and reach the fundus retina, which over time will not only cause damage to the retina and lens but also cause eye diseases.
Moreover, the summer sun is so strong that it almost blinds my eyes.
All kinds of bright lights and stray lights come from all directions, making people feel dizzy. If you are driving or cycling, it is really super unsafe.
Therefore, you must put on a pair of sunglasses near me now in summer. If it is a sunny day in summer, it is recommended that you wear polarized sunglasses, which can effectively filter out strong light and stray light at the same time.
Three tips to quickly find qualified and suitable sunglasses
1. Qualified anti-ultraviolet sunglasses must be identified by national standards or industry standards.
2. Look at the CAT coefficient and choose different scenarios.
CAT refers to the transmittance, the proportion of visible light energy that can pass through the lens into the eye.
If the proportion of CAT is high, the protective effect will be strong, but it will be "dark" to see things correspondingly. So which one to protect depends on the needs of the use scene. General daily use of 2 or 3 categories is fine.
3. The darker the sunglasses, the better.
Dark sunglasses are not suitable to wear for a long time (all day), because the light of wearing them is very dark, which has an impact on safety. The color is too light, can see their own eyes of the sunglasses, the sunscreen effect is too weak, and also not suitable for long-term outdoor use.
Therefore, according to the demand, choose the right color of sunglasses.
First of all, gray, brown, green-gray these three colors, uniform absorption of the spectrum, small color difference, can better meet the use of daily light.
No matter whether the sunglasses are polarized or not, they can resist ultraviolet rays as long as they meet the relevant national standards. Then why do we suggest that we choose polarizers? In fact, the difference between the two mainly lies in whether it can effectively filter stray light and strong light.
You know, light actually comes from all directions. Even if you walk with an umbrella and a hat, the light will still enter your eyes in large quantities after it is reflected through the road.
Especially when the light is strong in summer, when we go out to drive or ride, we are often dizzy by the light reflected from the road or the hood, and polarized sunglasses are very easy to use.
As the name implies, the polarizer has a polarizing effect, which can reduce the strong light and stray light. After wearing the polarizer, the field of vision under the strong light is clearer and can effectively prevent glare.
It can not only protect against ultraviolet rays but also weaken the strong light and avoid the situation of direct sunlight when driving or cycling. It can effectively reduce the dazzling sense caused by the diffuse reflection caused by the road or the hood, improve visual clarity, and filter the polarizing effect visible to the naked eye.