Don't look at the sun!

“I don’t have very good eyesight, and I was advised to strengthen the eye muscle this way: periodically look at the bright sun. And it hurts me. I don't think it's harmful...

“I don’t have very good eyesight, and I was advised to strengthen the eye muscle this way: periodically look at the bright sun. And it hurts me. I don't think it's harmful...
Petr Krasnov, Kazan"

Ultraviolet radiation destroys the retina, it cannot be useful for the eyes! Excessive exposure to UV rays can cause burns to the mucous membrane of the eye. They are not visible, but they are felt - the eye stings, tears are released profusely. If you get burned, go to the doctor, and the sooner the better, because eyes don’t like self-medication.

To avoid eye injury, avoid looking directly at the sun and wear sunglasses. They serve as a pretty good filter, but only really good ones. Ordinary plastic will not help; the glasses must be covered with a special filter. The most optimal level of transmission of spectacle lenses is up to 400 nanometers. How to determine if your glasses meet this parameter? Using a special device that determines the throughput of light filters. Such devices are available in every self-respecting optician, so I recommend choosing glasses that are good for your eyesight there.

Natalia Maychuk,
ophthalmic surgeon, researcher
MNTK "Eye Microsurgery named after. S. N. Fedorova"