![Amazon.com: Transition Lens | Photochromic Reading Glasses | Clear Readers Turns into Sunglasses in The Sun | UV400 (Black, 2.00) : Health & Household Amazon.com: Transition Lens | Photochromic Reading Glasses | Clear Readers Turns into Sunglasses in The Sun | UV400 (Black, 2.00) : Health & Household](https://m.media-amazon.com/images/I/61utiRigv5L._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Transition Lens | Photochromic Reading Glasses | Clear Readers Turns into Sunglasses in The Sun | UV400 (Black, 2.00) : Health & Household
![Amazon.com: Transition Lens | Photochromic Reading Glasses | Clear Readers Turns into Sunglasses in The Sun | UV400 (Black, 2.00) : Health & Household Amazon.com: Transition Lens | Photochromic Reading Glasses | Clear Readers Turns into Sunglasses in The Sun | UV400 (Black, 2.00) : Health & Household](https://m.media-amazon.com/images/I/61rdiK+Vv+L._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Transition Lens | Photochromic Reading Glasses | Clear Readers Turns into Sunglasses in The Sun | UV400 (Black, 2.00) : Health & Household
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
![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)