Blue Light from digital devices can kill vital molecules in the eye

Blue light from digital devices and the sun transforms vital molecules in the eye’s retinal into cell killers, according to optical chemistry research at The University of Toledo.

This study confirms how high energy blue light can cause macular degeneration which an incurable disease that can cause blurred vision and blindness. Furthermore, blue light can also affect one’s sleep as it impacts melatonin production.

Prolonged exposure to blue light on retinal, a form of Vitamin A, causes the retinal to kill the photoreceptor cells. Photoreceptor cells are the light sensitive cells in the retina that absorb light and convert it into an electrical signal that is passed to the brain through the optic nerve. These photoreceptor cells are not able to regenerate in the eye.

Scientists recommend the use of eye wear that filters UV and blue light when outdoors and not to stare at phones or tablets in the dark.

Video courtesy of Fox 26.


Kasun Ratnayake, et al. Blue light excited retinal intercepts cellular signaling. Scientific Reportsvolume 8, Article number: 10207 (2018)