Are polarized sunglasses good for night driving?
In the previous article, we discussed “What is the best color for polarized sunglasses?”. In this article, let’s talk about “Are polarized sunglasses good for night driving?”.
According to statistics, the traffic accident rate at night is 1.5 times larger than that during the day. More than 60% of major traffic fatalities occur at night. Driving at night is caused by factors such as low visibility, dazzling headlights on the head, fatigue, and visual impairment. In addition, pedestrians and motorcyclists are very likely to cause traffic accidents due to the strong light exposure and visual impairment. According to statistics, 30-40% of car accidents at night are caused by the abuse of high beams. Therefore, the high beam is the first killer of eyes and driving safety at night.(https://www.koalaeye.com/blogs/our-stories)
Harm to eyes with strong light driving at night
Some drivers think it’s nothing to be shaken by a bright light. They used to squint their eyes and endure the bright light for a while. In fact, it is very dangerous for you to do that during driving. When the human eyes are stimulated by the strong light of the car lights, the pupils automatically shrink from the normal 5~8mm to 1mm or even smaller, so that the amount of light entering is even reduced to more than 1/30 of the original. After the strong light passes, because the pupils were too late to recover, the amount of light entering decreased sharply, causing a phenomenon similar to night blindness. Numerous traffic accidents occurred from this blindness. Therefore, anti-glare has risen to the importance of caring for life and preventing car accidents.
Ordinary polarizers are not suitable for driving at night
While preventing glare, the polarizer also absorbs the intensity of other spectrums, so it is very comfortable to wear during the day or in the sun. However, the surrounding environment is very dark at night. If you wear sunglasses at this time, the surrounding light will be darker, so you can't see clearly whether there are unsafe factors in the surrounding environment when driving. Although it is effective for high beams, it will bring greater safety risks to yourself and others. Therefore, ordinary polarizers are not suitable for use at night.
Night vision polarized lenses
If you often suffer from high beams when driving at night, you can consider night vision polarized lenses. The polarizing film of this lens is not made of TAC but made of PVA, and the thickness is 1/5 of TAC. The lens is brown with very high clarity. It solves the problem of wearing at night. Relatively speaking, night vision polarized lenses are more expensive than ordinary polarized lenses. Although this is a night vision polarized lens, it is not a problem to wear it during the day.
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