What is blue light?
Blue light is light with relatively high energy wavelengths between 400nm-500nm. In particular, blue light is not always detrimental unless its wavelength is 400 to 450nm. When the blue light is between 480 and 500nm, it has a role in adjusting biological rhythms, such as sleep, mood, memory, etc. They are all related to it, which is beneficial to the human body.
Where blue light comes?
Blue light is found in a wide range of light sources, and most of the blue light you'll ever experience in a lifetime comes from the sun. It also comes from digital screens, like computer screens, TV screens, cell phones, etc.
The dangers of blue light
1. Blue light affects sleep
Blue light has been found in studies to affect retinal cells in the back of the eye, which speaks to the pineal gland in your brain and produces melatonin which is known as the sleeping hormone, and the presence of melatonin helps improve overall nightly sleep. Therefore, people who spend a long time in front of digital screens are at higher risk of diminishing melatonin production and poor sleep.
Another evidence that blue light affects sleep is the sun. In the early morning, the sun tells your brain to wake up.
We'll recommend reducing the amount of screen time used, especially in the later evenings, and try not to use any digital screen at least two hours before bedtime.
2. Blue light causes asthenopia
Our eyes will be in a state of tension for a long time to see clearly, causing asthenopia. It may lead to some symptoms of eye strain, such as headache, diplopia, easy serialization when reading, and inability to concentrate, which affects people's learning and work efficiency.
Who needs blue light blocking glasses?
It is significant for younger individuals who are starting to use more digital products in their learning regimen. Whether they're homework in front of a computer staying up all night, writing a paper, or maybe learning on something like an iPad. For this reason, blue light blocking glasses are recommended for people who spend a long time in front of digital screens. Thus, people spending much time in front of computer screens can consider blue light blocking glasses.