FDA approves contact lenses that shade the sun
April 13, 2018 by Robert Preidt
FDA
The lives of contact lens wearers just got a whole lot easier.
On Tuesday, the U.S. Food and Drug Administration approved the first contact lenses that can act like sunglasses.
A special additive automatically darkens the lenses when exposed to bright light, while they become clear again in normal or dark lighting conditions.
https://medicalxpress.com/news/2018-04-fda-contact-lenses-sun.html