With many school districts reopening this fall with fully remote or hybrid learning models because of the coronavirus, one thing is clear: Screen-based instruction will be the reality for hundreds of thousands of students across the country. In addition to access issues caused by the digital divide, families must also grapple with what an increased use of devices may mean for their children’s well-being, including their vision.
At this distance, the eyes turn in to focus on the screen, as opposed to being relaxed and in the straight-ahead position when looking at something further away, Knight said. After a while, the turning in can lead to fatigue of the eye muscles, which can cause headaches or other vision problems. “There’s a whole mountain of information about myopia,” said Dr. David Guyton, a professor of pediatric ophthalmology at Johns Hopkins University and a pediatric ophthalmologist who has been treating patients with myopia for 40 years, “but the main fact over the past 50 years that we’ve learned is that what produces myopia is the elongation of the eye.”
Knight suggests that children place an elbow on the table and then rest their head in that hand. From this position, they should lift their elbow and touch the screen; that is now the closest working distance they should be from their device.Knight advises parents and caregivers to follow the 20/20/20 Rule: “Every 20 minutes you need to look up at something 20 feet away for at least 20 seconds.” This gives eyes a break and a return to their natural position.
Dry eyes are another consideration when it comes to eye health. Guyton explained that when people read, particularly on digital devices, “their blink rate decreases down to 5 to 10 times per minute,” which can lead to dry eyes. Though he said children’s eyes don’t tend to dry out as much as adults’, it’s important for caregivers to take note of whether their child is blinking regularly when looking at a screen. Reminding them of this, Deitz noted, may help with eye comfort.
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