How can you tell the quality of the sunglasses?

One of the main reasons to wear sunglasses is to protect your eyes from the harmful rays of the sun. But are you sure your sunglasses will give you the protection you need for your eyes?
So how can you determine if your sunglasses provide adequate eye protection from the harmful effects of sun exposure?
Here are some ways to determine the quality of your sunglasses and make sure your eyes have all the protection you need.

1. Look for UV protection label

Reliable best fashion sunglasses brands always show the type of UV protection on the label. Alternatively, there is a label indicating 100% UV protection UV 400 filter category. Sunglasses with UV400 lenses block all rays with wavelengths up to 400 nanometers and cover all UVA rays. UVB. Always pay attention to these labels when buying sunglasses to provide the best UV protection for your eyes.

2.try with a UV flashlight

If you have a UV flashlight at home, you can use it to test the quality of your sunglasses. Flashlights not only emit invisible UV light, but they also emit visible light. Some of the light passes through the lens and illuminates the paper. Be sure to distinguish between when UV light passes directly through the lens and when visible light enters the subject.

3. Please note the expiration date

Yes, sunglasses have an expiration date. The general expiration date for sunglasses is two years or more. Sunglasses expire over time as they are exposed to UV light, damaging the UV protective layer of the lens and making it ineffective.

4. Beware of dark sunglasses

Many people may think that the darker the sunglasses, the better they can protect their eyes from sun damage. In reality, the darkness of a lens does not necessarily mean that it can block UV rays more effectively.
Dark sunglasses are primarily great for filtering ambient light and glare. However, the problem with dark sunglasses is that the pupils open and more light can enter the eyes. If the sunglasses are not protected from UV rays, additional UV exposure increases the likelihood of cataracts and macular degeneration.

5. Know what polarization is

Polarized sunglasses are becoming more and more popular, for a good reason. Polarized lenses are equipped with a filter that captures only vertical light and blocks horizontal light. When this happens, glare is reduced, contrast is improved, and visual clarity and comfort are improved. Polarized lenses are not essential to block the sun’s UV rays, but they enhance eye protection, which allows for a clearer view of the sun. This is especially useful when driving or playing a particular sport.
If you want to buy high-quality sunglasses, it is highly recommended to wear polarized sunglasses. However, remember that polarized lenses may not be suitable for night driving, LCD screens, car dashboards, clocks, instrument screen displays, etc. Learn more about the benefits of polarized sunglasses and the differences between polarized and non-polarized sunglasses on our blog.

6. Have an optometrist check

If you want to make sure your sunglasses are good enough to protect your eyes from sun damage, you can take them to your local optician for testing.

7. Check the quality of the lens

Your optician can check the quality of your sunglasses lenses, which is the most important factor. The quality of the lens and coating is important.

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