UV protection

In most cases, as far as the choice of sunglasses is concerned, the first variable that is taken into account is the aesthetics and the combination between the glasses and our face. We know that sometimes, given the wide range of options that exist, it is difficult to remember that sunglasses serve primarily to protect our eyes from UV (Ultraviolet) radiation.

People often think that sunglasses are a summer accessory, but in reality, UV rays are present in our daily lives, all year round, from January to December, from summer to winter, from the sunniest to the most sunny days. 

Abusive exposure to UV rays can irreparably damage our eyes. In addition to eyelid burns, it can severely burn the corneas (photokeratitis) or even create chronic conditions such as cataracts or pterygium (thickening of connective tissue that usually develops from the inner angle of the eye).

Therefore, when buying sunglasses it is important to check whether they offer adequate UV protection, i.e. whether they are capable of filtering ultraviolet light up to 400nm (nanometres). Sunglasses must bear the CE mark, which is a seal of quality referring to basic requirements and safety standards required by the European Union. Some glasses may also include the UV400 seal.

The seal may be printed on a label, on an adhesive on the lens, or even on the leaflet that usually accompanies the glasses.

Polarized lenses

Who has never been overshadowed by a more intense reflection of light? Most people have ever been in this situation. It happens on any mirrored surface (when the road is wet or by the sea). This phenomenon can even be dangerous for those who drive and for outdoor sportsmen. Light waves follow all directions except when reflected by flat surfaces. In this case, light waves align and oscillate in only one direction, a phenomenon called polarisation. The same physical phenomenon can be used to eliminate glare. Some lenses contain polarized filters that do not allow reflected light waves to pass through. The glasses with these filters allow a completely glare-free vision. Polarized sunglasses also allow a better perception of contrasts and display more vivid colors, considerably improving the experience of drivers or sportsmen who practice their activity outdoors. 


As we already mentioned in one of our articles, the colored lenses are back! In addition to their modern aesthetics, coloured lenses can be of considerable use to sports enthusiasts. Today we have a wide range of lenses on offer. From the most traditional colors, such as green or brown, to the degraded. In the case of degradês the comfort and versatility is especially complete when the lighting conditions vary. A driver who has to look at his dashboard and the road has different degrees of brightness. An eyepiece that shows a darker colour in the upper part of the lens and is progressively lighter in the lower part is optimal for these situations.

Coloured lenses have limitations however, so it is not advisable to use these lenses on all occasions.

To better understand what we are talking about, it is advisable to explain the different categories of lenses.


Mirrored lenses

Surely you will notice that some lenses have an exterior coating, in the most varied colours, which gives them a mirror effect. These lenses not only have an aesthetic dimension, they also have characteristics that allow them to limit the passage of light through the lens, making them ideal for use in conditions with strong luminosity. 

Depending on the colours used, the mirrored sunglasses have some benefits for their wearer. 

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