Chrome extension
Take care of your eyes!
Every 20 minutes, take a 20-second break by focusing your eyes on something at least 20 feet away.
Once you download the extension, click the extension icon on your Chrome browser. Click the "start now" button to set up a reminder. You will be notified every 20 minutes to use the 20-20-20 rule. You will also see a 20-second timer on the current web page you are on.
You can customize the timer by changing how often you choose to be notified.
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