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 lenses of my glasses get darker when exposed to sunlight. Last night I left them at such an angle that only part of the lens was exposed to the morning sunlight The lenses of my glasses get darker when exposed to sunlight. Last night I left them at such an angle that only part of the lens was exposed to the morning sunlight](https://i.redd.it/u91a80mimwo51.jpg)
The lenses of my glasses get darker when exposed to sunlight. Last night I left them at such an angle that only part of the lens was exposed to the morning sunlight
![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/a1_600x316/public/original_images/Aug2019/lenses_cover.jpg?h=2e181f1f&itok=U5dKB-4z)