Schools may be opening up, but some remote e-learning will no doubt continue until the pandemic is well and truly gone. Online classes will remain, so be careful of the strain too much screen time can put on a young person’s eyes. Follow this guidance from U.S. News & World Report.

•Take regular breaks. Set a timer to remind kids to look away from the screen every 20 minutes or so.

•Mark book chapters. Use paperclips to mark real books every few chapters to again encourage kids to rest their eyes.

•Keep screens at arm’s length. The screen of your child’s laptop or tablet should be 18–24 inches from their eyes.

•Reduce glare. Place the light source behind your child’s back; not behind the screen. Use the monitor’s controls to adjust brightness and contrast so it’s easy on the eyes. Don’t keep the room too dark, or the screen’s brightness can aggravate after-images and cause eye discomfort.

•Stop before bedtime. Kids should discontinue screen watching 30–60 minutes before going to bed.

•Spend time outdoors. After doing their school work, or during breaks, have children spend some time outdoors. Exposure to natural light can slow the development of nearsightedness, especially in younger children.