Review on Impact of Adverse Effect of Led on Human Health

By reviewing the recently available data there is no evidence found for the adverse impact of LED emission on human life by daily use (lights and screen display) by the normal people with keeping the benefits of LED lighting. There is some evidence available that when exposed to light in late hours of the day, inclusive of LED lights or display screen, may have a serious impact on our circadian system, although there is not enough evidence that can prove that this disturbance of the circadian rhythm leads to harmful effects on human health. It is observed that Children have comparatively high sensitivity to blue light although the emission might not be so harmful, radiations ranging in between 400nm to 500nm which are used in toys appears very dazzling and can cause photochemical retinopathy, which is a serious issue for children up to 3 years, old people also experience discomfort when exposed to rich blue light. Due to temporal light modulation (flickering) in some LED has potential health concern at a frequency about 100hz and above. Since the use of LED is still gradually increasing, so its important to monitor the adverse impact on human life from a long time exposure to LED.