Do you need your spectacles all the time? Does it bother you always having to carry two pairs of spectacles at all times so that you can see perfectly indoors and protect your eyes against glare and UV rays outdoors when it is sunny? Spectacles with self-tinting lenses can make your life more comfortable, as you always have the right tint for all light conditions in one set of spectacles. PhotoFusion® prescription spectacle lenses with a high or medium refractive index darken in just 15 to 30 seconds in bright light or sunlight*. Indoors, they brighten again in 5 to 10 minutes*, becoming clear enough to see distinctly in a short time. Of course, they also offer 100 per cent protection against solar UV rays at all tint levels.