Evaluation of Blue-Blocking Lenses Effects on the Melatonin Production level

Blue light has proven its impact on melatonin concentration levels, the circadian rythm disruption, body temperature, pupillary reflex and fastening the AMD (Age-related macular degeneration). Humans dialy routine has recently been compromised by the extreme utilization of LED screens (TV, smartphone, computer) that emit a considerable quantity of blue light. Therefore, researchers carried out experimental studies to evaluate the possible impact, both positive and negative of blue light, and prescribed some limitations regarding the safety of the utilization of artificial light sources and LED screens. Recently, transparent blue blocking lenses started being massively recommended for everyday use for the purpose of attenuating the negative effects of blue LEDs. Hence in this study, different lenses were tested using a Minolta CS-1000 spectroradiometer and three different light sources in order to evaluate their impact on the photometric and the colorimetric parameters of light perceived by the human eye, and their possible melatonin-production-schedule and retinal protection. Results indicate that the studied blue blocking lenses may add a minor or an insignificant protection to the wearers for the reason that devices software provide a sufficient protection for the retina and for the melanopsin photoreceptor.