High Energy Visible Light (HEVL) and Age related Macular Degeneration (AMD) blind millions around the globe. In the United States alone AMD accounts for 54% of blindness in individuals 40 years and older. Medical science has demonstrated a link between chronic exposure to visible light primarily in the HEVL (blue/violet) region (within 400-500nm) as a causative factor in human retinal photoreceptor cell death. This cell death (apoptosis) represents one of the earliest phases of AMD. The correlation between HEVL exposure and AMD is now well understood and a growing number of studies and numerous papers support this link. Until now, the only known method to block these damaging wavelengths of light was with deep amber or yellow tinted spectacle lenses, blue blocking sunglasses or certain intra-ocular lenses (IOLs) that are usually implanted later in life after one’s retina may be predisposed for macular degeneration. High Performance Optics proprietary technology helps preserve macular integrity by blocking these harmful light rays using a mostly colorless highly proprietary filter technology. Multiple patent applications have been filed covering the technology for a variety of ophthalmic and non-ophthalmic applications.
In addition to retinal protection (AMD) benefits, the selective filtering of the HEVL with HPO technology also improves contrast sensitivity, which leads to improved vision for the wearer. The reduction of light in the 400-500 nm is proven to improve contrast sensitivity and several clinical trials have established that HPO technology does, indeed, provide this benefit. It is also important to understand that you can also be at risk indoors under artificial light.
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