Why do you need to avoid blue light exposure?
Do you experience dry, itchy and irritated eyes? This is probably because of the blue rays you exposed yourself to while using the computer for long hours. Blue light rays can be far more damaging than you can imagine, resulting in severe chronic diseases. This article talks about the various effects of blue light along with some practical prevention methods like wearing reading glasses and eating good food.
What exactly is blue light?
Do you know that sunlight is not just yellow coloured light waves but a whole spectrum of seven different colours that merge together to make sunlight? Well, yes! The seven colours are Violet, Indigo, Blue, Green, Yellow, Orange and Red. Here, violet and indigo form the invisible spectrum, while the other five colours comprise the visible spectrum. Being lying at the bottom of the visible spectrum, blue waves move with damagingly high energy. This is why they are harmful to the eyes.
How does blue light damage our eyes?
The lens of the human eye can absorb short blue waves, thus blocking them from reaching up to the retinal screen and causing light damage. During this absorption, the chemical reaction results in the production of substances and derivatives that add to the lens protein, turning it yellow and opaque.
- Macular degeneration
Age-Related Macular Degeneration has turned out to be the leading cause for blindness at old age among the UK population. Increased blue light exposure damages the retinal screen and gradually results in macular degeneration.
- Retinal damage
When blue light waves enter the eye and reach the retinal cells, they penetrate throughout the cell body and induce toxic reactions in the cell contents.
- Digital Eye Strain
DES, also known as the Computer Eye Syndrome, is another extremely prevalent condition among the people of the UK. The symptoms include dry, itchy, sore and irritated eyes. This is the reason why it is recommended to always wear blue light glasses while using different screens.
Blue light can also disrupt the sleep cycle by suppressing the release of the sleep cycle, melatonin. Exposing ourselves to blue light during bedtime makes our brain more alert resulting in sleeplessness.
Avoiding blue light damage
- Wear blue light glasses
Blue light blocking glasses can prevent a significant portion of blue waves from entering your eyes. You can ask your optician to add a blue light coating on your regular or varifocal glasses.
- Eat good food
Foods rich in antioxidants and nutrients like Lutein, zeaxanthin, Omega-3, and vitamin A, C, and E are beneficial for eye health. You can include your diet with foods like carrots, oranges, nuts, leafy vegetables, bell peppers and legumes as they serve as a rich source of these nutrients.
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