MYVU Personal Media Viewer Clip-Ons for MP3 Players 3 Focus Adjustment Options Help Optimize Personal Viewing Needs For Users With Less-Than-Perfect Vision Includes A Blank Template That Users Can Bring To Eye Appointments For A Custom Prescription For Exclusive Use With MyvuPersonal Media Viewers & Are Not Intended Or Suitable For Eyeglasses Or To Correct Visual Impairments Users Are Encouraged To Consult An Eye Doctor Before Use