FDA Just Approved First Contact Lenses That Turn Dark in Bright Sunlight - The FDA approved the first photochromic contact lenses, those that react to UV light and darken to shield a wearer's eyes.

FDA Just Approved First Contact Lenses That Turn Dark in Bright Sunlight - The FDA approved the first photochromic contact lenses, those that react to UV light and darken to shield a wearer's eyes.

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