Researchers from the university of toledo say long periods of time exposed to blue light, the kind phones, tablets and televisions give off, can damage vision and generate poisonous molecules in the eye’s light-sensitive cells can causes blindness. the researchers suggest this could accelerate macular degeneration and other eye diseases.

Dr.Ajith karunarathne, one of the researchers and an assistant professor at the university of toledo, suggested that people avoid browsing on smartphones, laptops and similar gadgets in the dark. In this study, the researchers exposed living cells to various types of light. They found that exposure to blue light triggers “reactions that generate poisonous chemical molecules in photoreceptor cells” the cells in our retina that how cells respond to everyday blue light exposure from devices like phones and TV’s, according to a release.

For protection against blue light, one of the researchers said that suggests wearing sunglasses that can filter both ultraviolet and blue light outside, and avoid looking at smartphones at night.

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