lots of neat (and hopefully useful) things that can be added! i guess that's what OSS is for hehe.

-blink detection (using a webcam or forward facing camera?) to pause while your eyes are closed?

-hold-to-pause or hold-to-spritz button, and show context (+- a few lines) when not spritz-ing?

-point of focus slides slowly across the screen, to exercise those extraocular muscles