eyeCare - Health and Eye Care Tips

Reduce Computer-Caused Eye Strain with the 20-20-20 Rule
https://lifehacker.com/5591835/reduce-computer+caused-eye-strain-with-the-20+20+20-rule

The 20/20/20 Rule Can Save Your Eyes from Screen Strain
https://www.apartmenttherapy.com/the-202020-rule-can-save-your-124117

Five surefire ways to reduce computer eyestrain
https://howto.cnet.com/8301-11310_39-57445103-285/five-surefire-ways-to-reduce-computer-eyestrain/