Encourage kids to give their eyes a rest: With the school year in full swing, your children will likely be spending a lot of time with their nose stuck in books or staring at the computer screen. Over time, this can cause eye strain, headaches, blurred vision or even nearsightedness. Remind your children to give their eyes a rest every 20 to 30 minutes. It’s a good idea to minimise glare where they are working, as this can force the eyes to work harder than need be.