As the time is passing by our world is turning into a digital world. We all get tired and irritated sitting in front of systems working all day, don’t we? We get tensed, unfocused and get a pounding headache. Today, we've all basically come to acknowledge that advanced gadgets and screens are a piece of regular day to day existence. Yet, you may be pondering, what does this screen time mean for our eyes? These digital devices emit blue light, which may not sound dangerous, but it can be harmful for us.


Although it is ecologically well disposed, blue light can influence your rest and possibly cause sickness. Until the coming of counterfeit lighting, the sun was the significant wellspring of lighting, and individuals spent their nights in (relative) haziness. Presently, in a great part of the world, nighttime is enlightened, and we take our simple access to every one of those lumens essentially for conceded.


What is Blue Light ?


Blue light does not only come from screens or lights, it also comes from Sun. Sun in fact is the main source of blue light. We get exposed to blue light every time we go out in daytime. The light range comprises of UV, noticeable and infrared light. Visible light records for half of the light range and, as the name proposes, it's the main piece of light that can be identified by the human eye (UV and Infrared Light are both imperceptible). These diverse hued light beams contain various measures of vitality.


Light is estimated in wavelength, the units of which are nanometers (nm) and millimeters (mm). Unmistakable light has a wavelength extend in the area of 400 to 760nm, with high vitality obvious (HEV) light falling somewhere close to 400 - 500nm. It's called high vitality noticeable light because the blue/violet band of the obvious range has an especially high recurrence.







How are we exposed to Blue Light ?


We mainly get exposed to blue light because of the Sun, every time we go out in daylight our body get exposed to blue light. There are many man-made sources of blue light too like the digital devices, fluorescent light and LED lights etc. The smartphones, laptops, televisions emit significant amount of blue light which is quite harmful for our eyes and body.


The amount of time individuals spends utilizing these gadgets and the nearness of these screens to one’s face have many eye specialists and other human services experts worried about conceivable long-haul effects of blue light on eye good being.





Should we be concerened about Blue Light Exposure ?


The answer is yes. We really should be concerned about blue light exposure. The blue light can have harmful effects on our health specially on our eyes. "Blue" or High Vitality Noticeable (HEV) wavelengths gleam more effectively than longer, more vulnerable wavelengths. This sort of glimmering makes a glare that can decrease visual difference and influence sharpness and lucidity. This glinting and glaring might be one reason for eye fatigue, cerebral pains, physical and mental weariness brought about by numerous hours sitting before a PC screen or other electronic gadget.




Sleep Disruption


Blue light causes disruption to our circadian rhythm. Circadian rhythm tells your brain the time to sleep and wake up, blue light influences this rhythm which means you will find it difficult to fall asleep. There is a directly proportional relationship between blue light and sleep disruption, the more you get exposed to blue light the more your sleep gets disturbed. Blue light also influences your sleep hormone melatonin – a hormone, which is responsible to make you sleepy, being disturbed, this hormone does not work efficiently which causes sleep disruption.






How does Blue Light affect our Sleep ?

There are many factors responsible for our sleep suffering like stress, worrying, depression, Netflix and what not. Most people stay up late at night peeking into their digital devices, in this way they get highly exposed to blue light. As discussed earlier, there are two important factors in our body that are responsible for our sleep – Circadian Rhythm and Melatonin Hormone. Blue light is a significant suppresser of these two factors. The blue light may suppress melatonin and circadian rhythm twice if any other light exposure. By this negative impact on our sleep, blue light is proved to be deleterious to our health. 





Eye Strain


Eyestrain may be a common condition that happens once your eyes get tired from intense use, like whereas driving long distances or looking at laptop screens and different digital devices. We get tons of blue lightweight exposure via our digital devices and this may result in strained eyes, wherever our eyes feel sore and dry and our vision becomes less clear. in conjunction with the physical aches related to defrayment long hours before of a digital screen, this may result in tons of physical discomfort.





How does Blue Light Cause Eye Strain ?


Eyestrain causes blurry vision, dry and itchy eyes, headaches, shoulders and back pain and one may find it difficulty in focusing. As most of us love to stay awake at night and stare at our phone’s or laptop’s screen, eyestrain is the condition resulting from all these digital gadgets exposure. Since short-wavelength, high vitality blue light disperses more effectively than other noticeable light, it isn't as handily engaged. At the point when you're seeing PC screens and other advanced gadgets that discharge huge measures of blue light, this unfocused visual "clamor" diminishes differentiate and can add to computerized eye strain.






Some Helpful Tips

To protect your eyes and health from blue light, you may adopt these following tips.    

  • Use computer glasses.
  • Use blue light filter or night mode.
  • Stop using digital devices two hours before sleeping.
  • Don’t peek too closely on digital screens.
  • Use sunglasses while going out in daytime.
  • Use protective eyewear.


© 2020 All Rights Reserved