Before the advent of light emitting technology, the sun and candles at night had been the most effective source of light. The world and its evenings have been spent in partial darkness. With the advent of light emitting technology, this made us stay up late at night not knowing the negative effect it could cause.
What is blue light?
Blue is part of the sun’s spectrum of emitted light. It’s like ultraviolet rays, but in contrast to ultraviolet rays that are invisible, blue light is visible. Most importantly, the emission of the blue Blue light is a range of the visible light spectrum, defined as having a wavelength between 400−495 nm. This short wavelength means that blue light is a type of high-energy visible light, defined as having a wavelength between 400 and 450 nm wikipedia. The good part is that during the day the blue light is good for you to stay wake and active, during this process it reduces your sleep hormone called melatonin – to stay conscious of your environment. On the other side it’s bad at night, reason why?, it disturbs your circadian rhythm which affect the delay in REM sleep.
Your circadian rhythm is your 24-hour alarm clock located inside the body. It’s often called “body clock” because it informs the body what to do and what not to do like sleeping, eating and doing other sort of things which regulate many physiological processes. Receiving a lot of blue light at night from devices emitting them can result to you less efficiency at work place, you feel sleepy. These are the possible short-term effect.
List of devices that affect your sight:
Negative side effect of blue light
We now know what blue light from devices above could cause to our health, so lets talk about the long-term effects:
- Increases the chance of being a cancer patient.
- Weakness your immune system making you vulnerable to infections.
- Develop diseases like metabolic syndrome, diabetes mellitus type 2, obesity and heart disease.
- Blue light affects your vision
The way to minimise the dangerous effects of blue light without mutilating or throwing away your digital devices
- I recommend you using applications that that give you the privilege of changing the light to suitable ones or you let the app adjust the light based on the time of the day. Example is f.lux app or check this post here on how smart phone affect your sleep .
- Make sure you take break from devices emitting blue light, it’s for your safety, you can take 20-minutes break from such devices and let your eyes see other thing or engage them in other activity apart from blue light.
3.Make sure you blink your eyes always to relieve it from the stress of staying awake which makes it heavy.
4. Reduce the brightness of your devices – dim the light of your devices.
5. Avoid staring at devices before you go to bed.
6.Use recommended glasses to protect your eyes from blue screens.
The healthiest thing to do is to minimise the time you spend on your electronic devices, especially two hours before bedtime. .Be careful on how much you use these devices because technology has it good side and bad side. Wise up.