sunglasses uv protection

How to Test If Sunglasses Have UV Protection?

When selecting sunglasses, UV protection is a very important factor to be considered. Protection from the sun’s harmful ultraviolet rays is the most important quality of effective sunglasses. So why is UV protection important? In the following section, we will show you.

Why Is UV Protection Important?

The UV radiation from the sun is harmful to your eyes and even can lead to damage to your vision. In particular, cataracts are related to sun exposure. Studies have shown that the more time people spend in the sun, the greater their risk of getting cataracts as they age.

In addition, excessive UV exposure also has been linked to corneal sunburn, retinal tissue damage, macular degeneration, and other eye conditions. However, sunglasses can block about 100% of UV radiation so as to provide the best protection from these harmful lights.

So, in order to protect your eyes well, you should wear a pair of UV protection sunglasses. Put on your sunglasses whenever you are outdoors during daylight hours even when it is cloudy. However, do you know how to test if sunglasses have UV protection?

How to Test If Sunglasses Have UV Protection?

In this part, we will show you how to test if sunglasses have UV protection. UV protection sunglasses block the sun’s harmful rays because the lens material or coating that has been applied to the lenses, absorbs UV radiation.

The professional eye optical can test your sunglasses in a few seconds with an instrument called a photometer and tell how effective your shades are at protecting your eyes.

However, you can also test if sunglasses have UV protection by yourself in a simple way. 

Shine the UV flashlight onto a piece of paper money and it will glow when exposed to UV radiation. If the beam from your UV light source causes the fibers to glow even after it has passed through the lens of your glasses, you will know that your sunglasses can’t provide adequate UV radiation protection.

But one thing you need to know is that the older sunglasses with scratched lenses might not provide as much sun protection as a pair of new ones, especially when the UV protection comes in a coating rather than embedded in the lens.

So, if you need a pair of sunglasses with UV protection, you may need to buy a new pair.

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Where Can You Buy UV Protection Sunglasses?

You may ask where I can buy UV protection sunglasses. To buy a pair of new UV protection sunglasses, you can choose to try <Koalaeye Optical. It is an online optical store. If you choose to buy sunglasses or eyeglasses from here, you can enjoy great convenience. You don’t need to go out and the package will be mailed for you. Besides, Koalaeye Optical provides free shipping services.

Koalaeye Optical provides all kinds of sunglasses and eyeglasses, such as polarized sunglasses, progressive glasses, blue light blocking glasses, wrap around sunglasses, and so on. What’s more, there are various frames shape available.

To sum up, this post shows the importance of sunglasses UV protection and shows how to test if sunglasses have UV protection. If you have any problems with sunglasses or eyeglasses, you can leave a message in the comment zone or contact us via the email

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