The researchers analyzed the ultraviolet protection of car windows in 29 cars from 15 different car manufacturers. The researchers also measured the levels of ambient UV-A radiation from the front windshield and the driver’s window in the cars produced between 1990 and 2014.
The windshield was found to offer decent protection against UV-A, but the driver’s side window offered lower and inconsistent protection. Only 14 percent of cars were found to offer high levels of UV-A protection in the side windows.
The findings offer a possible explanation for the higher rates of cataracts and skin cancer on the left side of drivers’ faces. The researchers suggest that automotive builders consider upping UV-A protection of their windows to reduce rates.
Dr. Doris Day, a dermatologist and skin cancer expert at Lenox Hill Hospital, commented, “The World Health Organization has designated all wavelengths of ultraviolet radiation as known carcinogens. While UV-B is a shorter wavelength of light and is blocked by glass, UV-A is longer and goes deeper into the skin – causing both skin cancer and premature aging as it breaks down collagen. UV-A also goes through glass, making it a potential issue for those who have daily commutes or spend extended periods in the car.”
Drivers should wear sunscreen as a mode of protection and consider installing a special window tint as a means to prevent exposure.
Also, read Bel Marra Health’s article on Protect your skin naturally from the sun.
Sources:
http://archopht.jamanetwork.com/article.aspx?articleid=2522190