- Optical lenses for Look 2 mask - Look mask can be easily transformed in optical masks. Original lens can be disassembled and replaced by the optical prescription lens required. Look lenses range: negative: from -1,00 up to -10,00 (by 0,50 steps) positive: from +1,50 up to +3,00 (by 0,50 steps) - Negative lenses are symmetrical: the same lens can be assembled either on the right or the left hand - If you order different strength lenses for different eyes, please mention in the order which lens is for certain eye - Please, note that the price is per one unit