Usually, when a patient wants a gradient lens with polarization, it has to be created in the optical lab via dip tinting. This extra process can create unnecessary delays and increases the possibility of errors, such as mismatches or misalignment. Since the dye is usually on the outer surface of the lens, it can fade over time due to exposure.
NuPolar Gradient lenses are the only lenses with the gradient and the polarized film both encapsulated within the lens. This means no extra processing time needed for tinting. The patient gets a faster turnaround, an exact match every time, and no long-term fading.
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.
Polycarbonate is the most popular Rx lens material in the US. Its excellent impact resistance and greater index make it a good choice for prescription sunwear. In the past, gradient polarized prescription lenses haven't been widely available in polycarbonate. Until now!
NuPolar Gradient lens technology is so unique, it is patented.
US Patent 8651660 B2.