The purpose of Eyes safe is reminding you to take breaks while working on the computer for a long time. The break screen asks you to do some exercises which will reduce your RSI.
Notifications
Eyes safe shows a system notification for breaks and an audible alert at the end of breaks.
First alert : Small notification that show you some exercises to do for your eyes.
Second alert : Full screen notification that show you some exercises to do for your eyes and relax yourself.