8 tips for prevention
There are some simple things you can do to help prevent eyestrain. Some of them you can even start doing today.
1. Look away frequently, or the 20-20-20 rule
Often eyestrain occurs when you engage in a single activity for too long a period of time without a break. You should shift your focus to something other than the activity every 20 minutes. What you focus on should be 20 feet away, and you should look at it for at least 20 seconds. This is known as the 20-20-20 rule.
You should not only look away every 20 minutes, but also make sure to turn away from an intense activity for several hours during the day. If you have to work at a screen or drive a long distance for multiple hours, make sure to balance that activity with others that demand different uses of your eyes. For example, take a walk outside in the natural light during your lunch break if you’ve spent the whole morning working on a computer.