Photobiological safety

Much has been discussed about harmful "Blue Light", which refers to the visible blue region from 400nm - 450nm (shorter wavelength region of blue). It is also referred to HEV (High-energy visible) light and is under suspicion of causing cell damage in the retina and Age-related Macular Degeneration (AMD). For cataract patients, they need to have artificial lens replacement surgery since the lens become cloudy and causing vision loss. But, the artificial lens is not able to filter the blue light, therefore, post-cataract surgery patients are more exposed to HEV since part of the lens, which yellows with age, is removed and can no longer effectively absorb the HEV blue light. (Yellow is blue's complement). In response to this issue, OHSP produced handheld spectrometer covers the range of visible light, it can help you to measure the blue light energy effectively and avoid the damage caused by Blue light.