Mobiles/Desktops have become a part of our everyday lives. This especially accounts for employees who spend almost three fourth of their awake time in front of devices. The continuous exposure to blue screen light affects the cornea and causes eye and health complications that reflect in the later phase of their lives.
Most of us undermine the consequences of blue screen light and don’t take any preparations in reducing the exposure. Here’s a blog article with insights on why blue light is harmful and steps that can be taken to reduce the risks associated with it.
Why is blue light harmful?
The artificial blue light from the LED and screen-based OLED illumination operates on the spectrum of the 380–500 nanometer range- which falls in the most harmful range of 415-455 nanometer range.
Because of its temperature and frequency, the blue light tends to affect both the retina and the cellular anchors, which lead to early onset of Advanced Macular Degeneration. Blue light has also been linked with consistent melatonin disruption which could successively lead to some cancers.
Different age levels require different levels of protection. Children under the age of 14 who use tablets and phones with high energy light are at special risk. Until 14, their corneas aren’t fully developed, and if they’re constantly in front of a device, it could affect just not their eye sight but also their mental health.
Adults have their own issues to deal with. Blue light penetrates all the way to the retina in the back of the eye and builds up there over time. The cumulative effect caused by blue light leads to eye strain, dry eye, and unnecessary exhaustion.
How to cope up with device strain?
Use proper lighting.
Eye strain often is caused by excessively bright light either from outdoor sunlight coming in through a window or from hard interior lighting. While using a computer, your ideal lighting should be about half as bright as that typically found in most offices.
Eliminate exterior light by using shades or blinds. Reduce interior lighting by using fewer light bulbs or fluorescent tubes, or using lower intensity bulbs and tubes. If possible,keep your computer monitor or screento the side of the windows, instead of in front or behind it.
Glare on walls and finished surfaces, as well as reflections on your computer screen also can cause computer eye strain. Consider installing an anti-glare screen on your monitor and try painting the bright white walls a little darker color with a matte finish.
If you wear glasses, purchase lenses with anti-reflective (AR) coating. AR coating reduces glare by minimizing the amount of light reflecting off the front and back surfaces of your eyeglass lenses.
Upgrade your display.
It’s best if you replace CRT (Cathode Ray Tube) with a flat-panel liquid crystal display (LCD) which is typically used on laptop computers.
Compared to CRT, LCD screens are easier on the eyes and usually have an anti-reflective surface. The CRT screens can cause a little flicker of images, which is a major cause of computer eye strain. Even if this flicker is unnoticeable, it still can contribute to eye strain and fatigue during computer work.
When choosing a new flat panel display, select a screen with the highest resolution possible. Resolution is related to the “dot pitch” of the display. Generally, displays with a lower dot pitch have sharper images. Choose a display with a dot pitch of .28 mm or smaller.
Finally, choose a relatively large display. For a desktop computer, display can be of at least 19 inches.
Adjust your computer display settings.
Adjusting the display settings of your computer can help reduce eye strain and fatigue. Generally, these adjustments are beneficial:
- Brightness. Adjust the brightness of the display so it’s approximately the same as the brightness of your surrounding computers. If it looks like a light source, it’s too bright. If it seems dull and gray, it may be too dark.
- Color temperature. Blue light is of short-wavelength visible light that causes more eye strain than longer wavelength hues -such as orange and red. Reducing the color temperature of your display lowers the amount of blue light emitted by a color display for better viewing comfort. Nowadays mobile screens also have the feature of using the reading mode which causes the colour temperature go orange red from blue.
Exercise your eyes.
Consider looking away from your computer at least every 20 minutes and gaze at a distant object (at least 20 feet away) for at least 20 seconds. Some eye doctors call this the 20-20-20 rule.”Looking far away relaxes the focusing muscle inside the eye to reduce fatigue.This exercise reduces the risk of your eyes’ focusing ability to “lock up” after prolonged computer work.Remember to blink frequently during the exercises to reduce your risk of computer-related dry eye.
Consider computer eyewear.
Computer glasses are best to protect your eyes from unnecessary glare.Consider photochromic lenses or lightly tinted lenses for computer eyewear to reduce your exposure to potentially harmful blue light emitted by digital devices.You can take help from your optician to find the best glasses to fit your type of eyes.
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