The eyes are one of the most sensitive and vulnerable parts of the human body, but many people still let it be exposed directly to the sun every day. This is dangerous because sunlight can be up to 5000 times more powerful than a normal light bulb. Therefore, it is the most crucial factor responsible for degenerative eyes. In this article, we will walk you through information about UV and how to protect your eyes. Let’s dive right in!
How to protect your eyes from UV light
Solar radiation from the sun can cause severe damage to your eyes, so the best solution is to wear sunglasses. These glasses are designed with dark, thick, wrap-around style frames and special material that can block up to 100% percent UV light, perfect for eye protection.
All doctors and specialists confirmed that you need to wear sunglasses all year round even on cloudy days because UV rays can pierce straight through clouds and strike to your eyes.
What is UV radiation?
The most significant natural source of UV is the sun. UV rays are electromagnetic rays with wavelengths range from 100um to 380um. Depending on the frequency, the sunlight comes in various colors. But there are also invisible lights that scatter around us, such as Blue light, UV radiation. Ultraviolet waves have a shorter wavelength and a higher frequency than visible light. Higher frequencies mean higher energy, meaning UV light can penetrate deep into materials and even your tissues and cells. This Uv radiation is classified by wavelength into three categories: UV-C, UV-B, and UV-A.
UV-C is the most harmful type of ultraviolet radiation to humans. It has the shortest wavelength, about 100 to 280 nanometers. The UV-C is strong enough to burn your skin in seconds. But fortunately, mother Earth saves us this time because UV-C radiation is trapped in the ozone layer of the atmosphere; therefore, it lost a large amount of energy when coming to us and no longer dangerous to our body.
These rays have a wavelength of about 280 to 315 nanometers, which is slightly weaker than the UV-C. But while UV-C can't reach human beings, 5% of UV-B radiation can penetrate the ozone layer and cause skin and eye-damaging and aging problems.
This UV-B radiation causes sunburn and increases the risk of skin cancer. UV-B reacts with the DNA of cells and destroys it. Our skin cells are self-repair and cable to fix the failure of DNA, but when DNA damage accumulates in a long period may lead to the development of skin cancer.
Overexposure to the UV-B for a short amount of time can lead to tiny blurry splotch on your vision called an after image. Normally, it will clear out in just a few minutes. But, if you keep letting your bare eyes contact directly to the sun, you might make the cornea at the front of your eyes get burnt. Thankfully, researches show that the cornea can absorb the UV-B and protect our eyes.
Out of the three, UV-A is the least harmful, up to 95% of UV-A radiation can get through the ozone protection without anything stopping it. This will also explain why you need sun protection even on cloudy days because UV is always there.
UV-A can go through the cornea of your eyes. The cornea protects the rest of your eyes and contains pain receptor nerves. Prolonged exposure to solar radiation may cause damages to your retinal tissues. It eventually leads to eye problems, such as pinguecula, pterygium, and photokeratitis.
Depending on the severity of the damage, the recovery process can take weeks, months, and in several cases, years. Worst, when the damage is too severe, it will never heal, leads to a condition called solar retinopathy.
Quality affordable sunglasses in octagonal shape block all UV rays
The UV index:
This calculation is derived by the National Weather Service and the Environmental Protection Agency to measure the strength of ultraviolet radiation at a particular time in place. It is divided from 1 to 11+ scales, which is low, moderate, high, and very high.
The UV index is calculated based on the following factors:
Geographic location: The impact of UV on the Earth's tropical regions is much higher than in others. The closer to equator areas, the stronger the UV radiation levels.
And for every mountain climber or skier out there, for every 3000 feet above sea level you are, UV increases 6%.
Time: every day, from 10 a.m to 2 p.m, is the highest risk time of sun exposure.
Season: during the fall and winter season, the sunlight strikes the earth at a shallow angle and becomes weaker when hitting the earth, and we have a low UV index. When spring arrives, the striking angle is getting higher, so you will hear about the high or very high UV index.
Ozone: when there is more ozone in the atmosphere, it absorbs and neutralizes the harmful ultraviolet light.
How to pick out the best affordable sunglasses:
Affordable sunglasses can be a stylish accessory and can bring you the fashion element that you are looking for. But there also are health benefits from sunglasses since it can protect your eyes from ultraviolet radiation through seasons, no matter summer or winter.
Keep in mind to wear sunglasses for your children because they are more likely to have outdoor activities and expose more to the sunbeam. Early protection can prevent your child from lifetime skin and eye condition.
The most important thing to remember when you are picking out a pair of sunglasses is that you want 100% UV protection. What that means is those glasses filter out 100% of the harmful radiation that may affect your eyes.
Additionally, the wrap glasses reduce the amount of ultraviolet sunlight getting into your eyes, so the more they wrap, the less light reaches your eyes. But, we have to clarify that the level of sun protection has nothing to do with the color and darkness of the lenses.
Affordable mirrored sunglasses provide better protection in harsh environments.
The other thing that you should take into consideration is polarized lenses, which help to reduce glare in reflective places like open water, road surfaces. Flash or mirrored lenses are also a perfect choice for outdoor activities in bright light conditions since a mirrored coating added to the lens surfaces helps to reduce a large amount of visible light and block all UV rays.
The sun is a crucial source of life, but it causes the human body a lot of different problems, especially the eyes. For the best protection, you definitely would buy some quality affordable sunglasses and wear them daily to keep your eyes safe and enjoy the benefit that sunglasses bring in.
I hope that you now obtained enough information about UV rays and how to prevent them from entering your eyes. Remember always to protect your eyes. Thank you for reading, and don't forget to share this with your friends and family so they can also protect themselves.