Looking at screens for too long can cause eyestrain, but so can driving long distances. Eyestrain can be caused by other vision problems like farsightedness or astigmatism.

• Use the 20-20-20 rule if you spend long periods in front of screens. Every 20 minutes, take a 20-second break and look at something 20 feet away. Giving your eyes other things to look at breaks the monotony that can cause eyestrain.
• We also tend to blink le...

Blue light from electronic screens is not making you blind, nor does it cause any eye disease. While research finds blue light can damage cells under certain lab conditions, it is very different from what happens in the cells of our retina.