How to choose sunglasses to protect your eyes?

When doing outdoor activities, if the ultraviolet rays are too strong, we all know that wearing sunglasses can help protect our eyes. But not all sunglasses are good for your eyes. Wearing the right sunglasses can truly protect your eyes.

Suitable as needed to block ultraviolet rays without affecting clarity

What kind of sunglasses are "suitable"? First of all, we have to understand why sunglasses can protect our eyes under strong ultraviolet rays. The biggest difference between sunglasses and ordinary glasses is that a special coating is added to the lenses. It is this coating that blocks ultraviolet rays.

High-quality sunglasses have good light transmittance and do not affect the clarity of visible objects. The lens coating has high hardness and is not easy to wear. Inferior sunglasses not only have poor light transmittance, but the irregularity of the lens surface causes the objects seen to be deformed and distorted, and it is difficult to provide sun protection by blocking ultraviolet rays. According to scientific research, the UV coefficient of sunglasses must be above 400 to protect our eyes.

Inferior sunglasses not only fail to protect your eyes, they can also damage your eyes

Inferior sunglasses not only fail to protect our eyes, but can also cause a series of diseases to harm our eyes, so we must pay attention to them. If you wear low-quality sunglasses, your eyeballs will easily feel sore and swollen, which can easily lead to an acute attack of angle-closure glaucoma, followed by nausea, dizziness, and discomfort. At the same time, due to the irregular surface of the lenses of inferior sunglasses, more ultraviolet rays enter the eyes, posing the risk of causing cataracts, retinal light damage and other eye diseases.

Glaucoma patients and children under 6 years old are not suitable to wear sunglasses

It is also worth noting that patients with glaucoma and children under 6 years old are not suitable for wearing sunglasses. Wearing sunglasses, especially low-quality sunglasses, may cause glaucoma patients to experience symptoms such as red eyes, eye pain, sharp decline in vision, and even nausea and vomiting. Since the visual function development of children under 6 years old has not reached the normal level, wearing sunglasses for a long time will affect the further development of vision and may cause amblyopia.

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