Sunglasses trick the brain into thinking it’s dark and prevent it from producing a hormone that protects against sunburn, according to new research

Despite centuries of warnings to “protect” our eyes from the sun, researchers around the world are now discovering the sun is actually the best protection we have against nearsightedness.

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The number of people with nearsightedness or “myopia” has been on a sharp rise over the last couple of decades along with the number of hours young people spend in artificially lit indoors staring at screens.