This app is a game of shoot up a gun.Might be to distraction.May be draw a picture using a gun marks.Please try using this app to try.-------There are also other apps.https://play.google.com/store/apps/developer?id=tskwt●Dynamic Vision(動體視力)https://play.google.com/store/apps/details?id=com.tsk_wt.game.KineticVisionStrengthening-------tskwt