As well as being a key cosmetic accessory, sunglasses are an essential piece of visual equipment.
However, not all sunglasses provide the same effective protection against UV rays.
There are indeed several levels of protection, including category 3 sunglasses.
In optical terms, levels of sun protection are divided into five main categories.
Category 0 sunglasses are essentially aesthetic accessories.
These sunglasses offer no or very little protection against UV rays, with maximum filtration of less than 20%.
Sold in shops or online, these sunglasses have no other purpose than to complete a look.
To start protecting yourself from UV rays, you need at least category 1 sun protection.
Slightly tinted, these sunglasses can filter out up to 50-60% of UV rays.
As they only provide protection against low levels of sunlight, these glasses are ideal for use in winter or on grey days.
In moderately bright weather, sunglasses with an index of 2 may be sufficient, filtering out up to 80% of UV rays.
However, for truly effective sun protection, you need to choose category 3 or 4 sunglasses.
In fact, only these lenses offer sufficient UV filtration in strong sunlight, up to 97%.
These are the sunglasses that opticians generally recommend to protect your eyes.
In fact, category 3 sunglasses are some of the most widely adopted.
These sunglasses have indeed a number of advantages, which explains why they are recommended by opticians and so popular.
Their greatest advantage is, of course, their ability to provide excellent protection from the sun, with up to 92% filtration of ultra-violet rays.
These sunglasses can therefore be worn in a wide range of circumstances, including bright, sunny days.
Effective against glare, category 3 lenses are also suitable for car driving, unlike category 4 lenses.
Although more powerful for UV filtration, category 4 sunglasses are indeed prohibited for drivers since they impair their visual perception.
Category 3 sunglasses are the perfect all-round eyewear for both the snow and the beach.
That way, your pair of sunglasses can follow you wherever you go, whatever you do, all year round.
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