These requirements were taken into account in the development of PhotoFusion® by ZEISS. In just 15 to 30 seconds, PhotoFusion® high- and mid-index lenses will darken in bright light or in the sun*. Indoors, they clear again in about 5 to 10 minutes*. That is the reason why PhotoFusion® is a leader among self-tinting lenses. And of course, it offers 100% protection against solar UV rays as a standard feature.
*Average performance for 1.67, 1.6 and polycarbonate lenses. Performance will vary according to material, temperature and light conditions.
A further milestone in 160 years of ZEISS expertise; as well as anti-reflective coating and customised progressive lenses, the original self-tinting plastic lenses were first launched by the Carl Zeiss Vision brand American Optical in 1983.