The eye condition 70% of adults have without knowing --- The average American spends 6 to 9 hours every day staring at some type of computer screen, whether it's a tablet, a laptop, or a smartphone. And we're guessing you do, too. -- If so, you may join the ranks of the nearly 70% of adults who suffer from "digital eye strain" -- a progressive condition that could eventually lead to serious eye diseases, concludes a new report from The Vision Council, a nonprofit organization that supports the optical industry. -- Digital eye strain is an escalating health issue. Your eyes aren't made to stare at a fixed point for hours and hours on end, especially one that emits high-energy visible light, a.k.a., artificial "blue light." -- Overexposure to this type of light -- and the fatigue of focusing on the same middle-distant point for a third or more of your day -- can strain your eyes and cause dryness or redness, blurred vision, "tired" eyes, headaches, and back or shoulder aches in the short term, the report authors say. (Take a break from staring at the computer screen and soothe eye strain with these yoga eye exercises. -- More, Markham Heid, MSN, at: http://healthyliving.msn.com/diseases/vision/the-eye-condition-70percent-of-adults-have-without-knowing