Why you should beware of your smartphone—and the invisible blue light it emits

Blue light is everywhere. It’s emitted by computers, televisions and smartphones.

It’s also the cause, in some cases, for accelerated blindness and eye disease, according to a new study. Constantly looking at digital devices kills cells in the eye’s retina, and can lead to macular degeneration, an incurable eye disease that usually begins when people are in their 50s or 60s, a recent University of Toledo study found.

Blue light can cause a “poisonous” chemical reaction in the eye’s photoreceptor cells and, when those cells die, they’re gone forever. The good news: There’s a way to prevent the cells from dying.

Ajith Karunarathne, assistant professor in the department of chemistry and biochemistry at the University of Toledo, found one type of molecule — called the antioxidant alpha tocopherol, which is derived from Vitamin E — can stop the poisonous reaction.

As people get older, it’s harder to fight eye disease. Karunarathne said he hopes this research leads to the invention of preventative measures, such as eye drops to protect the retina...................READ MORE

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