Dr. Michael Cross owns OneVision Health and Wellness in McMurray.

“We’re raising this generation of kids, of young adults and even older adults who are spending hours and hours and hours of time staring at these devices,” Dr. Cross said.

The problem it the blue light emitted from the screen. It’s in the exact range where it does the most harm.

“Phones, tablets are a big source of that wavelength – 430-440 nanonmeters, that is very damaging to the eyes,” he said. “Shorter wavelength, but higher in energy. It penetrates through the lens, the cornea to get to the back of the eye, to the retina.”

It could lead to macular degeneration, which is a serious condition that can cause blindness.