Light filtering technology is commonly used in the ophthalmic industry. However, from a health perspective, today’s ophthalmic lenses currently provide only UV protection (generally below 400nm). The concept of lenses with UV filtering has grown to be a standard for most ophthalmic devices. UV light rays which have wavelengths between 300-400 nm are not visible but damage the human lens and have proven to be a factor in the progression of cataracts. Most eyeglasses, sunglasses, contact lenses, and intraocular lenses provide some level of UV protection.
UV blocking eyeglass lenses, contact lenses and intraocular lenses (IOLs) do not offer retina protection from HEVL wavelengths (400-450nm). Currently, only certain specialized eyeglass lenses sunglasses and IOLs provide HEVL protection, however in many cases there is a noticeable color to the lens hindering cosmesis, reducing daylight vision, night vision and color perception.
HPO technology circumvents these unwanted negatives by selectively targeting the most damaging wavelengths of HEVL, which yields superior protection and cosmesis with little to no change in: daylight vision, night vision, and color perception.
HPO technology is tunable for various applications and can be incorporated in many materials.
* Intraocular Lenses