Polarization
Only polarized lenses can block blinding glare, which is why it’s important that every patient is recommended a pair of polarized sunwear. Normally, light is reflected in all directions. However, when light is reflected off a shiny horizontal surface, it becomes preferentially polarized in one direction, resulting in blinding glare that overwhelms the eye’s sensors and causes discomfort.
The polarizer within the lens contains millions of iodine or dye molecules that are carefully aligned to intercept and block this excess horizontal reflection. This results in comfortable vision with no glare. See video.
NuPolar Gradient lenses are polarized uniformly over the whole lens, including the lighter bottom portion.
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