Does blue light hurt your eyes?

There is a myth in the media that the screens of computers and smartphones emit waves of blue light, which supposedly “spoil the eyes.” And companies that sell glasses to block harmful blue light and make money on this.

Light waves in the blue color spectrum are a natural part of the sun’s radiation, although excessive exposure to it, along with the sun’s ultraviolet rays, can increase the risk of eye diseases. But the small amount of blue light from computer screens has not been proven to harm the eyes. Blue light can interfere with sleep if you look at a monitor screen or smartphone right before bed.

Some people develop symptoms of eye strain. This is due to glare on the screen, fuzzy images, poor lighting and the fact that while working at the computer, a person blinks less often. The so-called computer vision syndrome develops: eye fatigue, blurred vision, headache, pain in the neck and shoulders. This is the wording used by the American Optometric Association, but this condition does not exist in the International Classification of Diseases.

This eye strain is no different from symptoms that may occur when reading, writing or sewing for a long time. And according to one theory, stress and probably increases the tendency to myopia. According to experts from the American Academy of Ophthalmology, eye fatigue occurs with any work that requires concentration: if you drive a car or read for many hours in a row, the effect will be the same.

How to relieve eye strain
Here are some tips on how to relieve eye strain at the computer:

• do not forget to blink;
• Use artificial tear drops to refresh your eyes when they seem dry. Or turn on the humidifier in a dry, warm room;
• take regular breaks and look away from the computer;
• keep the screen as bright as lighting in a room;
• get rid of glare – use a matte screen filter;
• sit at least at arm’s length from the screen.