![1 Pair of Photochromic Reading Glasses - Reader That Darkens When Exposed to Outdoor Sunlight - UV Protection Readers - Walmart.com 1 Pair of Photochromic Reading Glasses - Reader That Darkens When Exposed to Outdoor Sunlight - UV Protection Readers - Walmart.com](https://i5.walmartimages.com/asr/78bc1205-72b3-48a6-80d1-8940a3d9603e_1.a8f0eac364f8a17ebc2f9a8d90ffda47.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
1 Pair of Photochromic Reading Glasses - Reader That Darkens When Exposed to Outdoor Sunlight - UV Protection Readers - Walmart.com
![MultiLens Biocover C1 fitover sun/filter glasses, yellow lenses, allows 82% light through, dark photocromic filters. MultiLens Biocover C1 fitover sun/filter glasses, yellow lenses, allows 82% light through, dark photocromic filters.](https://www.worldwidevision.com/media/catalog/product/cache/2ce963bd942af9c6e5514438bc5ab1c1/2/7/277716.jpg)
MultiLens Biocover C1 fitover sun/filter glasses, yellow lenses, allows 82% light through, dark photocromic filters.
The Eye Surgery & Laser Centre - Yes. Photochromic lenses turn dark and offer protection from the sun on exposure but when in most modern cars, the windscreens have UV protection properties
How can my glasses change from transparent, when I'm inside, to dark when I go outdoors? | HowStuffWorks
![Smart sunglasses change tint with the click of a button and can even take phone calls | Daily Mail Online Smart sunglasses change tint with the click of a button and can even take phone calls | Daily Mail Online](https://i.dailymail.co.uk/1s/2021/06/02/22/43761081-0-image-a-25_1622671012209.jpg)