100% UV Protection - UV rays can be extremely harmful to your eyes. These damaging rays can accelerate your eyes aging process and these negative affects can be enhanced by surfaces like water and snow. In addition to providing exceptional optical clarity all Electric's lenses block 100% of these damaging UV rays so that your eyes can rest easy.
98% HEV Protection - High-Energy Visible (HEV) rays cause damage to the eye that don't often appear until later in life in the form of macular degeneration. These lenses minimize exposure and help to prevent future eye problems.
4 Base Curvature - The base curvature corresponds to the curve of the lens. The higher the number, the higher the curve. 4 base styles have a “flatter” look. 6-9 base curves hug closer to the face.
These measurements include the height of the frame, the width of the frame and the length of the arms measured in millimeters.
For example, a 50-140-120 frame:
Frame Height: 50mm
Frame Width: 140mm
Arm Length: 120mm
Melanin Infused CR39 Lenses - Optics by Carl Zeiss Vision