Eyesight 20-20-20
Reduce eye strain with the 20-20-20 rule. Unintrusive reminders to look 20 feet away, for 20 seconds, every 20 minutes.
Extensions by CRJ Labs
1 extension
Chrome Web Store
1 extension
Reduce eye strain with the 20-20-20 rule. Unintrusive reminders to look 20 feet away, for 20 seconds, every 20 minutes.