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Showing posts from February, 2015

How to Prevent Eye Strain,the 20-20-20 rule and f.luux

The 20-20-20 rule is quite effective at reducing eye strain. Simply put, after every 20 minutes of looking at the screen, look at an object that is at least 20 feet away for 20 seconds. Following this rule has helped us Open   http://www.protectyourvision.org  > click 20-20-20 > select your break schedule from the drop-down menu. You may go with 20-20-20 (recommended) or 60-5 (five-minute break every hour) or Custom (where you can choose the duration of each break and the interval between breaks). Once your break schedule is selected, click the black button labelled "Request permission and test notification" > Allow ( Chrome ) or Show for this session ( Firefox ) > Start PYV. The website requires desktop notifications because that's how it reminds you to take a break. Desktop notifications are supported on Firefox, Chrome and Safari.  Now a timer will appear, showing you the time till your next break. You may disable sound notifications by clicking the volume