Please kindly note THESE ARE NOT READING GLASSES. They perform the opposite function! it is myopia lenses (12 strengths available:0,-100,-125, -150,-175,-200,-225, -250, -275,-300, -350, -400)
Comfortable, lightweight body that won't hurt your nose, always clean and well protected thanks to the free cleaning cloth and case Your glasses will always be clean and well protected thanks to the free cleaning cloth and case!
Photochromic lenses are also referred to as light-sensitive lenses". Glass lenses are adding silver halide, but now is the mainstream of photochromic resin lenses, adding of spiro and other chemicals in the acrylic resin lens, so that the original colorless and transparent lenses, in bright light, will become colored lenses, to do the protection, so is suitable for indoor and outdoor use.
