Blue Light is emitted in artificial lighting like gadgets and electronic devices. With the recent advancements in technology. Artificial light has started to surround you, in computers, laptops, televisions, and especially in your smartphone. We can’t quickly get rid of it since artificial light. Because, it allowed humans to work for more extended hours, sleep later. And it facilitates the new entertainment culture that is developing. So we should consider using blue light protection such as safety glasses.
UVA and UVB are Dangerous
However, since protection against blue light is starting to surface. If you’re still not convinced to protect yourself. Here are a few reasons why shielding your eyes from the blue light is essential:
Your Eyes Can’t Block Blue Light Very Well
The cornea acts as the outermost lens of your eyes. That does a good job of blocking UV Rays from hitting your retina found at the back of the eyeball. Even without your sunglasses on. Only less than one percent of the UV rays from the sun can reach your retina. Also, your retina is responsible for sending a signal to the brain for visual recognition. Wearing sunglasses helps you protect other parts of your eyes. Which is why you should still wear those under the glaring sun.
On the other hand, nearly all visible blue light bypasses the protection brought by the cornea and lens and can reach and potentially harm your retina.
Exposure Adds to Macular Degeneration Risks
So, with the more blue light being able to penetrate the cornea and lens, going all the way to the retina, it can damage light-sensitive cells found in the inner lining of the eye’s back part. Also, this may cause changes that are similar to what macular degeneration displays. Symptoms can also eventually lead to permanent blindness.
Although more research is needed to be done to determine the human eye’s threshold for blue light exposure in the retina, many eye care experts are bothered that blue light from your screens, phones, and other digital devices would eventually increase an individual’s risk of acquiring macular degeneration in the future.
It Contributes to Digital Eye Strain
High energy blue light has short wavelengths and scatters more easily and unfocused than the usually visible light. Computer screens, phones, and other kinds of digital devices which give off large amounts of blue light, the unfocused light particle, which is also called “visual noise,” reduces the color contrast of the things you are looking at, causing your digital eye strain to increase.
Various studies have shown that using lenses which blocks blue light with wavelengths less than 450 nm heighten the contrast significantly. Due to this, usage of computer glasses which makes use of yellow-tinted lenses can give you additional comfort if you’re planning to view digital devices of an extended time.
It is Important After Undergoing a Cataract Surgery
The lens of your eyes can block almost one hundred percent of solar UV rays. As you age, your eyes’ lenses also learn to develop mechanisms that enable it to prevent some of the short wavelength blue light. This kind of blue light is the one responsible for damaging the retina which leads to macular degeneration and loss of vision.
If you are about to undergo cataract surgery, you can inquire your doctor about the different kinds of intraocular lenses and which one will be replacing your cloudy natural lens. It is also vital that you ask about how much blue light protection the intraocular lenses will provide you. After the surgery, you can opt to use special eyeglasses with a special blue light filter, especially if your job requires you to sit in front of a computer screen for hours.
Your Body Clock Gets Messed Up
During the human evolution throughout millions of years, humans have grown accustomed to the rhythms of the sun and developed a body clock which heavily depended on the light given off by the sun. The blue-rich light seen in the morning sun prevents the release of sleep hormone called melatonin. The same stimulus also triggers the brain to produce hormones for hunger and alertness called cortisol and ghrelin, respectively.
On the other hand, the red tones found in the dusk can be interpreted as the gradual absence of blue light reverses the process and prepares the body for sleep.
With blue light being all around you in different times of the day, your own body gets confused as to the proper time to sleep and rest, which in turn makes you more tired.
What Can I Do To Protect My Eyes From Blue Light?
If you can’t help but stare at computer screens and phones at relatively more extended periods than usual, there are ways in which you can reduce your exposure to blue light. One of those ways is the usage of blue light filters, which are available for smartphones, tablets, and computer screens.
These filters prevent massive amounts of blue light being emitted from digital devices without affecting the visibility of the display. Some devices also come with blue light filters which limits its blue light emission but in turn displays a yellowish tinge on its screen. Some tempered glasses, which protects your device from scratches, also come with blue light filters.
You can also opt to use computer glasses. These special-purpose glasses can be availed even without eyeglass prescription if you do not need vision correction or if you use contact lenses to correct your sight.
Lens manufacturers have also launched special anti-reflective coatings that reduce glares and blocks blue light from both the natural and artificial. You can also choose to use photochromatic lenses that protect from both UV and blue light in both indoors and outdoors. These lenses automatically darken when it detects UV rays, to reduce sun glares and increase the user’s comfort. You can consult your optician about the type of lens features that will best suit you and protect your eyes from blue light.
Advancements in technology have certainly come a long way, but it also meant that you are bound to get exposed to artificial blue light that can be detrimental to your eyes, mind, and body. With the science of light damage advancing, so does the people’s ability to develop ways to protect themselves. Now, everyone should become aware of the dangers of blue light and have access to specific protective measures.