Kids’ Prolonged Use of Smartphones Linked to Dry Eye

A Korean study found that extended use of smartphones could cause pediatric dry eye disease. The study also found that taking breaks outdoors helps fight the ocular surface disorder.

The study, published in BMC Ophthalmology, found that when children with the condition went four weeks without using smartphones they showed signs of improvement. Of 916 children tracked in the study, 6.6 percent had dry eye, and of those 97 percent reported using their smartphones more than three hours daily on average.  The study identified children who live in urban areas in grades 4-6 as those with the highest risk for the disease.

COA board member and AOA InfantSEE® & Children’s Vision Committee member, Ida Chung, says this study shows the importance of routine comprehensive eye exams.

"Children with dry eye disease may be underdiagnosed," Dr. Chung said about the study. "I agree with the authors' conclusion that dry eye disease must be detected early and should be treated with appropriate intervention and education. The best way to ensure this happens is to have parents think about their children's eyes and bring them to their doctor of optometry for a comprehensive eye examination."

The study’s researchers assume that the reduce blink rate when using smartphones for a long time is to blame. This causes the faster evaporation of the lubricating tear film. Another study found that computer screen use versus reading decreases blink rates to only 5-6 blinks per minute.

To help alleviate digital eye strain, individuals should follow the 20-20-20 rule:  take a 20-second break to view something 20 feet away every 20 minutes.

To read more from AOA about this topic, click here.