![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)
Smart sunglasses change tint with the click of a button and can even take phone calls | Daily Mail Online
![3 Tips for choosing Photochromic Lenses | Transitions / Reactolite / Sensity / Photofusion - YouTube 3 Tips for choosing Photochromic Lenses | Transitions / Reactolite / Sensity / Photofusion - YouTube](https://i.ytimg.com/vi/eV9M82_neY8/mqdefault.jpg)
3 Tips for choosing Photochromic Lenses | Transitions / Reactolite / Sensity / Photofusion - YouTube
![I tried Acuvue's contact lenses that turn dark under the sun - and I'd buy them if it weren't for the price, Lifestyle News - AsiaOne I tried Acuvue's contact lenses that turn dark under the sun - and I'd buy them if it weren't for the price, Lifestyle News - AsiaOne](https://media.asiaone.com/sites/default/files/styles/article_main_image/public/original_images/Aug2019/lenses_cover.jpg?itok=tAFi81m5)
I tried Acuvue's contact lenses that turn dark under the sun - and I'd buy them if it weren't for the price, Lifestyle News - AsiaOne
All About Eyes Abuja - Lenses that go dark in the sun are referred to as #photochromic lenses. They have tiny molecules embedded in them that react with UV (ultraviolet) sun rays
![The World's First Variable Polarized Photochromic Lens – FirstView Eye Care Associates – Plattsburgh NY 12901 The World's First Variable Polarized Photochromic Lens – FirstView Eye Care Associates – Plattsburgh NY 12901](https://www.firstvieweyecare.com/wp-content/uploads/2011/07/transitions.gif)