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UVA vs UVB rays protection: choose your sunglasses wisely


Very often people glance through the products specification and then they focus on the shape, size and colors when they buy sunglasses. And that’s great, having a memorable look is important. But do you know what else is important? Eyes safety.

You may have heard of UV rays in terms of SPF sunscreens. But what exactly are those rays and how are they connected to sunglasses?

Let’s start from the beginning. There are basically two types of rays coming from the sun that are harmful – UVA (Ultraviolet A) and UVB (Ultraviolet B). Too much exposure to both of them is bad and can cause a range of issues starting from suppression of the immune system to wrinkling, skin ageing, skin cancer etc.

UVB rays are partially filtered by the ozone layer, but to some degree reach the earth’s surface. UVB radiation enhances the production of melanin – a skin pigment, thus tanning! But if exposed for too long they are thought to cause skin cancer. They are most dangerous from April to October.

UVA rays are with lower energy but they remain at a stable intensity all year long. They are thought to be more dangerous because they can penetrate further in the skin’s layers.

So how are they relevant to sunglasses? If you are exposed to the sun’s UV rays for a longer period you might be exposing yourself to many types of eye damages like cataracts (the eye becomes progressively opaque, resulting in blurred vision), macular degeneration (deterioration of the central portion of the retina), pingueculae (yellowish patch or bump on the conjunctiva), and even temporary vision loss. UVA rays are particularly dangerous to the eye because they can reach the retina inside the eye.

So remember: while we all love the sun, the summer and the warm weather, having in mind that these rays can be harmful to the skin and eyes is a must. Make sure that you don’t settle for a pair without checking it’s protection first. Go to Enzoriva’s collections if you are interested in finding a pair that will protect you because they are compliant with the European Standard EN ISO 12312-1:2013/Amd 1:2015.


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