Although blue light is considered environmentally friendly, blue light can cause several health issues and affect your sleep and more.
Before the invention of artificial lights, Sun was the only source of blue light, and people used to spend their evenings in darkness, but, at present, the evenings are illuminated all over the world and are artificial lights available everywhere globally; therefore, we take them pretty much for granted. We are also paying the price at the same time.
This article will give you a detailed overview of blue light and how it can have adverse effects on your health and eyesight.
What is Blue Light?
Blue light is a visible color of the light spectrum seen by a human eye.
Blue light has a shorter wavelength, which produces more energy,
Blue light is considered harmful because many studies show that blue light can cause eye strain, sleeplessness, fatigue, and headaches.
Natural Blue Light vs Artificial Blue Light
The blue light wavelengths surround us, and it is found everywhere. You might not have known, but they are why the sky appears blue to us.
The blue light has shorter wavelengths that collide with air particles and cause the blue light to scatter, due to these scattered wavelengths of blue light, our eyes process the sky as blue. It also impacts regulating the body’s sleep and wake cycles, also known as the circadian rhythms.
Blue light also plays a vital role in boosting your alertness and elevating your moods, it can also increase your reaction time and your overall well-being. There are some artificial sources of blue light, including electronic devices and other lighting types.
How Blue Light Affects Our Eyes?
Blue light affects your eyes in several ways; blue light can easily pass through your cornea and the lens of your eyes to reach the retina.
This light can have adverse effects on your vision and can prematurely age your eyes.
Research shows that too much exposure to blue light leads to the following problems:
Digital Eye Strain
Blue light emitted from digital screens and computer devices can lead to digital eye strain as it decreases the contrast. Symptoms of eyestrain are sore eyes, itching, and difficulty in focusing.
There are some studies according to which exposure to blue light for an extended time can cause severe damage to your retina cells. As a result, you will face several eye-related problems like nearsightedness, farsightedness, astigmatism, age-related macular degeneration, etc.
As discussed earlier, blue light penetrates all the way to Retina, and if you are exposed to blue light for an elongated time, then it can damage the light-sensitive retina of your eyes.
As a result, several changes occur in your eyes that are very similar to those of muscular degeneration, and sometimes it may lead to permanent real loss.
Many eye care specialists suggest that added blue light exposure from smartphones, computer screens, and other electronic devices can increase your risk of muscular degeneration later in your life; Therefore, we recommend wearing computer glasses as long as you are in front of a computer.