“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. People staring at screens also tend to open their eyelids wider than while doing other tasks, and the extra exposed surface area in addition to infrequent blinking can accelerate tear evaporation and is associated with dry eye disease, he said. Dry eye may be chronic for some but can be managed with over the counter or prescription eye drops. Past research suggests that up to 5 million men and women over age 50 in the United States suffer from dry eye disease, the researchers write in their report.
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