The ZEISS sunlenses fitted in these sunglasses have been tested in order to achieve advanced optical perfection, guaranteeing the best possible protection for your eyes and eye sight. First and foremost, sunlenses must protect your eyes from the sun’s rays. Moreover, just like prescription lenses, sunlenses also have to protect your eyes and eyesight when you look ‘through the lens’. The health of your eyes is a serious matter, requiring total protection everyday. This can only be achieved with top quality sunlenses. Provide your eyes with the best possible protection using ZEISS sunlenses.