THIS IS FOR THOSE WHO DO NOT USE READING GLASSES BUT STILL WANT THE PROTECTION. IT'S A QUALITY TINTED COMPUTER GLASS AND IS DESIGNED TO RELIEVE EYE STRAIN FROM WORKING ON THE COMPUTER, OTHERWISE KNOWN AS "CVS", COMPUTER VISION SYNDROME. AN ESTIMATED 70% OF AMERICANS SUFFER FROM CVS. SYMPTOMS ARE TIRED EYES, LACK OF FOCUS,HEADACHES, AND NECK AND SHOULDER PAIN.  THESE ASPHERIC LENSES HAVE AN ANTI- REFLECTIVE COATING THAT FILTER HARMFUL LIGHT WAVES.