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How motorists spoil their sight in the summer with “driver’s” sunglasses

The radiant sunny weather, typical of the summer months, forces us to wear protective sunglasses. The paradox is that using many of them does far more harm than good.

On the Internet and on the shelves of offline stores with the onset of the summer season, a lot of “spectacle” offers for every taste appear. Most of us don’t really bother with our choice. When buying, they look in the mirror (how the accessory “fits into the face”), check with the seller or in the description for the presence of polarization, buy the item, and then happily wear it in clear weather.

True, some of us have heard that in the solar spectrum there is ultraviolet radiation that is practically invisible to the eye – a series of electromagnetic waves shorter than 380-400 nm in length. We do not perceive them with our eyes, but they are quite capable of influencing the cells of our body. Sometimes it is “thanks to” them that in the summer you can get a serious sunburn, even when the sun is hidden from us by a thin veil of clouds and does not seem to shine brightly.

What happens if a driver wears normal dark glasses, albeit with polarized lenses? To begin with, we recall that lenses with a rather low light transmission value are most often used for driving glasses – at the level of 8-18%. “Driver’s glasses” are usually gray, black or brown. Yellow ones are of no interest to us now, as they are intended for cloudy weather. When we look at the sunlit world through dark lenses, the pupil of our eye, receiving a dose of light reduced by glasses, automatically expands so that the retina perceives it in sufficient quantity.

But the “ambush” is that the ultraviolet, which was mentioned above, our eyes practically do not feel at all. And therefore this light wave is poured into the open pupil in a powerful current. Without eyepieces we would be squinting and the pupil would shrink to the size of a pin head and not let in an excessive dose of UV radiation. But in “sunglasses” it freely and imperceptibly burns out our retina. For the driver, the situation is aggravated by the fact that he is forced to stare at the road for a long time and receives an ultraviolet “overdose” with his eyes.

It doesn’t just lead to fatigue. Over time, ultraviolet burn leads to macular degeneration of the retina, which is manifested in blurred vision. Excess UV also causes the development of cataracts and even oncology. And all this because of ordinary sunglasses.

Therefore, the driver should look for them exclusively in products marked “400-UV”. This means that they do not transmit radiation with a wavelength shorter than 400 nm. That is, they block all ultraviolet radiation. If it is not possible to buy a “four hundred”, then choose those whose outer surfaces of the lenses give a strong blue-violet reflection. And the inside is normal gray or black color. As a result, you can count on them to properly reflect the blue-violet part of the solar spectrum and protect your eyes from treacherous radiation.

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On the Internet and on the shelves of offline stores with the onset of the summer season, a lot of “spectacle” offers for every taste appear. Most of us don’t really bother with our choice. When buying, they look in the mirror (how the accessory “fits into the face”), check with the seller or in the description for the presence of polarization, buy the item, and then happily wear it in clear weather.

True, some of us have heard that in the solar spectrum there is ultraviolet radiation that is practically invisible to the eye – a series of electromagnetic waves shorter than 380-400 nm in length. We do not perceive them with our eyes, but they are quite capable of influencing the cells of our body. Sometimes it is “thanks to” them that in the summer you can get a serious sunburn, even when the sun is hidden from us by a thin veil of clouds and does not seem to shine brightly.

What happens if a driver wears normal dark glasses, albeit with polarized lenses? To begin with, we recall that lenses with a rather low light transmission value are most often used for driving glasses – at the level of 8-18%. “Driver’s glasses” are usually gray, black or brown. Yellow ones are of no interest to us now, as they are intended for cloudy weather. When we look at the sunlit world through dark lenses, the pupil of our eye, receiving a dose of light reduced by glasses, automatically expands so that the retina perceives it in sufficient quantity.

But the “ambush” is that the ultraviolet, which was mentioned above, our eyes practically do not feel at all. And therefore this light wave is poured into the open pupil in a powerful current. Without eyepieces we would be squinting and the pupil would shrink to the size of a pin head and not let in an excessive dose of UV radiation. But in “sunglasses” it burns out our retina unimpeded and imperceptibly. For the driver, the situation is aggravated by the fact that he is forced to stare at the road for a long time and receives an ultraviolet “overdose” with his eyes.

It doesn’t just lead to fatigue. Over time, ultraviolet burn leads to macular degeneration of the retina, which is manifested in blurred vision. Excess UV also causes the development of cataracts and even oncology. And all this because of ordinary sunglasses.

Therefore, the driver should look for them exclusively in products marked “400-UV”. This means that they do not transmit radiation with a wavelength shorter than 400 nm. That is, they block all ultraviolet radiation. If it is not possible to buy a “four hundred”, then choose those whose outer surfaces of the lenses give a strong blue-violet reflection. And the inside is normal gray or black color. As a result, you can count on them to properly reflect the blue-violet part of the solar spectrum and protect your eyes from treacherous radiation.

Source: Avto Vzglyad

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