Photochromic lenses use photochromic compounds reacting to UV light for darkening, providing UV protection. They return to a clear state indoors. Compared with mass photochromic, our spin coating technology can greatly reduce the time it takes for you to change color and fade, giving you a better visual experience.

Compared with standard progressive, Premium Interior progressive lenses design is better with a wider vision and comfortable to wear. It also reduce eye strain and fatigue, especially when working on digital devices or reading for long periods of time.