Photochromic Lenses look like regular clear lenses when indoors but automatically darken when moving into a brighter area. Ultraviolet (UV) rays from the sun affect the molecules in the photochromic lenses so they change color.
 
Specifications: 
- 2 pieces lens (Right & Left)
- Plastic material
- Index 1.56
- Photochromic, the lens will change its shade darker when exposed to sunlight.
 
Prescription Range:
Without Cylinder: Sph Max -6,00
With Cylinder: Cylinder Max -2,00 , Sph Max -6,00