Although sunglasses are still only a fashion accessory for many, more and more people are becoming aware of the importance of protecting their eyes from the sun’s rays by choosing the most suitable sunglasses lenses for it.
It is very likely that until now, when you needed new sunglasses, you only wondered what type of frame suits your face best or what colors suit your style best, but what is essential is that the lenses you choose fulfill their mission and protect your eyes.
To fully understand the different types of sunglasses lenses, you have to differentiate between the filter, which is the absorption capacity of the sun’s rays and measured on a scale from 0 to 4, and the type of treatment of the lenses. You can get the cheapest glasses online.
Next, it explains in detail the different categories of filters depending on the protection they provide:
Filter 0 or attenuated luminosity
They are the most transparent glasses lenses. They let 80% to 100% of sunlight pass into the eyes. They are not real and adequate protection, and their primary function is aesthetics. Users recommend its use indoors and at night.
Filter 1 or contrasting brightness
They are also clear lenses but slightly colored. They are used in environments with light solar luminosity and allow the passage of between 44% and 80% of the light.
Filter 2 or medium brightness
These are moderately colored crystals to wear with a medium solar luminosity. They let through between 19% and 43% of sunlight.
Solar filter 3
They are very colored, dark glasses lenses. They are the best for a high luminosity like the one that occurs being outdoors on the beach or in the mountains. They only let through between 9% and 18% of the light.
Solar filter 4
They are the darkest lenses and only allow 3% to 8% of sunlight to pass through. They are the most recommended for extreme luminosity, the best for people who practice water sports, skiing, or high mountains. They provide the best possible visual protection and are perfect for people who have undergone surgery for cataracts or other vision problems. It is recommended not to drive with a glass of this category of sunscreen.
In addition to its filtering capacity, you can differentiate the types of sunglasses lenses according to their treatment:
They are crystals that change their tone depending on the intensity of the light, so their protection also varies; when the lenses are darker, they protect more, and when they are lighter, they cover less.
Mirror crystals. This type of glass offers the eyes excellent protection, creating a barrier effect.
Polarized lenses; In addition to being in trend, thanks to the treatment they are subjected to, polarized sunglasses minimize glare, making them perfect for driving. It is one of the best sunglasses.
Anti-reflective crystals; They are very similar to polarized lenses, but they add the advantage that they avoid reflecting the sun’s rays on the surface of the crystals either on the inside or outside, achieving greater clarity in vision.
Correctly choosing lenses for sunglasses can be decisive in the health of your eyes, so if you continue to have doubts about the types of lenses, make an appointment online or come to ask an optician for your + Closest vision.