Lens width 2 (52 mm) Br Width of frame 54 (138 mm) lens height 12 (31 mm) Nasal bridge (dbl) 7 (20 mm) Axis length 5 3/9 inches (137 mm) The blue light lock lens filters the high -energy blue light of the digital screen exposing the field of vision and protecting the eyes reduces visual discomfort and fatigue when the computer is used for a long time the soft design of the nasal pad It allows you to accurately place the nasal pad