2 ms·
Follow 20 20 20 rule After every 20 mins look at a point that is atleast 20 feet away from you for atleast 20 seconds for your eyes.
by amanmaan08 11y ago
Follow 20 20 20 rule
After every 20 mins look at a point that is atleast 20 feet away from you for atleast 20 seconds for your eyes.