Office workers who spend long hours looking at computer screens have changes in their tear fluid similar to people with the disease known as dry eye, according to a study from Japan.
The protein MUC5AC, secreted by cells in the upper eyelid, makes up part of the normally occurring mucus layer, or “tear film,” that keeps the eye moist. But study participants with the most screen time had MUC5AC levels nearing those of people with diagnosed dry eye.
“To understand patients’ eye strain, which is one of major symptoms of dry eye disease, it is important that ophthalmologist pay attention to MUC5AC concentration in tears,” said Dr. Yuichi Uchino, an author of the new study.
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A person who uses the computer a lot should follow the 20/20/20 rule.
After 20 minutes of computer use, look at something 20 feet away for 20 seconds. And try to be more conscious of blinking- we tend to blink less when staring at the monitor screen.