Is the 20-20-20 rule for your eyes actually useful?
In medical school, I remember learning the 20-20-20 rule related to eye reducing eye strain while using screens. The rule is basically: every 20 minutes, shift your eyes to look at an object at least 20 feet away, for at least 20 seconds. (while you are using screens). I wanted to look at the evidence on the benefits of this rule. Here are some articles we found: 1. Computers, digital devices, and eye strain. 2. 20-20-20 rule are these numbers really justified From these articles it appears that this rule is not very effective. I wonder if we can alter this rule to make it more effective and I wonder if we can tweak this rule also to help us control our screen time.I believe eye strain and screen usage are issues we are going to have really address moving forward.