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.