Exposure to ultra-violet (UV) rays not only affects the skin but can also damage the eye lens proteins. One of the ways to protect ourselves from UV rays is to wear sunglasses.
Wearing sunglasses can protect one’s eyes from all the problems caused by UV rays. Dr Rebecca Taylor, an ophthalmologist in Nashville, United States, emphasized that sunglasses block 99-100 per cent of UVA and UVB rays.
According to Taylor, as quoted by Time and Antara, September 3, 2019, the price of sunglasses does not matter. Inexpensive sunglasses can still be beneficial by looking for labels that provide UV protection.
“When you don’t wear protection, ultraviolet radiation that you can’t see goes through the eye. The eye structure is susceptible to it,” explained Taylor.
The retina of the eye has a smooth central area known as the macula. There is evidence UV can increase a person’s risk of developing macular degeneration, one of the leading causes of age-related blindness.
Apart from that, sun exposure is also linked to eye cancer and short-term eye injuries, such as sunburn called photokeratitis. These short-term injuries can trigger temporary blindness or vision problems.
Is Big Sized Sunglasses a Solution?
“You get direct exposure to the sun and second exposure to reflected light. Then at higher ground levels, the sun’s rays are stronger. The eye’s risk of exposure to ultraviolet also increases,” explains Stephen Foster, professor of ophthalmology at Harvard Medical School.
A 2018 study in Switzerland found that large sunglasses block more UV rays than small glasses. Even so, protecting your eyes with sunglasses is not a good idea.
A 2009 US study showed that the light-sensing photoreceptors in the eye helps regulate the body’s circadian clock, which plays a role in regulating sleep, appetite and other things.
As a result, people who get “high levels of light” in the morning tend to sleep better than those who don’t.
Wearing sunglasses earlier in the day can interfere with that sleep process. Stephen Foster suggests you shouldn’t wear sunglasses until 10:00 a.m.