Despite the eye's natural defences, there is growing medical evidence that overexposure to HEV blue light can damage the retina, the part of the eye that brings objects into focus.  This damage occurs when blue light penetrates the macular pigment of the eye and causes a breakdown of the retina, leaving the eye more vulnerable to blue light exposure and cell degeneration.

A Harvard medical study stated that "High Energy Visible (HEV) blue light has been identified for years as the most dangerous light for the retina.  After chronic exposure, one can expect to see long range growth in the number of macular degenerations, glaucomas, and retinal degenerative diseases".  And a paper published by the American Macular Degeneration Foundation (AMDF) reported that "the blue rays of the spectrum seem to accelerate age-related macular degeneration (AMD) more than any other rays in the spectrum". In addition, a report by the Beaver Dam Eye Study showed that "increased exposure to blue light in the teens, 20s, and 30s increased the risk of onset age AMD by 10 years, effectively doubling the chances of blindness during lifetime."

This growing medical evidence is just one of the reasons why it's so important to educate the patients about the risks of  chronic, long-term exposure to blue light to their vision, and how it could lead to an increased risk of macular degeneration, glaucoma, cataracts, and other retinal eye degenerative diseases.