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Computer vision syndrome originated with office work, but the popularity of mobile devices is now straining the eyes in a different way, according to Dr. James E. Sheedy, director of the Vision Performance Institute at Pacific University in Oregon.

To avoid strain on mobile devices, Dr. Sheedy said, make the print size larger, read for shorter periods and employ the 20-20-20 rule. For every 20 minutes of using the device, take a 20-second eye break and look at something beyond 20 feet. “This gives your eyes time to relax,” he said. “It’s almost like flexing your muscles.”

If that does not work well enough, consider the glasses. 

(Lenses to Ease the Strain From Staring at Screens)