Blue light is the high energy & the strongest portion of the visible light. Due to its short wavelength, its frequency is very high. Size of this portion is usually around 380- 500 nanometers. High frequency translates into high radiation. Human eyes find it difficult to tolerate the blue light. This portion of the light flickers more than weaker portion and this is one of the reasons why we experience a headache, eye fatigue, blurry vision etc when our eyes are exposed in the blue light.
GOES DEEPER THAN UV RAYS
Spectacle buyers in India have a common perception that UV rays are the most harmful rays. In the era of computer & mobile phones, they should be more concerned about blue light than UV rays. Science says that blue light has more penetration power and this easily reaches the back of the eye to the nerves. This causes many problems like eye fatigue, loss of vision, blurry vision etc.
BADLY AFFECTS SLEEP PATTERNS While sleeping at night, a hormone called Melatonin starts secreting inside the brain from the Pineal gland. This sleep-hormone is mainly responsible for controlling the sleep patterns. Lesser production of this hormone causes sleep disorder and high production may cause too much laziness. Blue light exposure may result in obstruction of this natural phenomenon.
DIGITAL SCREENS EMIT LOTS OF BLUE LIGHT Devices with digital screens like Smartphone, laptop, computer etc produce a large amount of blue light that is harmful to your eyes. As per a study Smartphone tops in the list of blue light producing devices. In a technologically driven society, it is needless to say that exposure to the blue light has risen dramatically and it is required to reduce the excessive blue light exposure.