Some eyesight exercises help in making your eyes more flexible. These improve blood circulation to the eyes and help you maintain optimal vision. They reduce too much strain on your eyes and also improve your power of concentration. For this, you can try rolling your eyes in both clockwise and anticlockwise direction for a few seconds each. Blink in between the sets to give your eyes some rest. You can also try fluttering. Blink your eyes quickly for 20 to 30 seconds repeatedly. Practice this twice daily.