74% of the UK population wears corrective glasses or has had a laser eye surgery. While there are multiple reasons for this, studies reveal that blue light exposure from tech screens like laptop, computer, TV, tablet and smartphones is a major cause for prevalent optical defects among the masses. Read on to know what is blue light and how it damages our eyes. Read on to know the preventive measures to avoid blue light damage.
What Exactly is Blue Light?
Without any scientific jargons, here is the simple science lesson:
- Sunlight is a spectrum of seven lights of different colours- the seven colours that we see in the rainbow, that is, Violet, Indigo, Blue, Green, Yellow, Orange, and Red.
- Moving from red to violet, the length of these light waves decreases and their energy increases.
- As all five colours except indigo and violet are visible to the human eye, blue light becomes the light rays with highest moving energy in this visible spectrum.
- Due to this high energy, blue light exposure becomes damaging for the human eyes.
How Does Blue Light Damage Our Eyes?
- Cataract: The human eye lens can absorb short blue rays penetrating the eyes to block them from falling on the light sensitive retinal screen. This process results in the production of derivatives and other substances that get added to the lens cell contents and make it turn yellow opaque.
- Macular degeneration: As the blue rays pass through the retinal cells, they induce toxic reactions in the cells and gradually damage the tissues of the retina. This results in the development of macular degeneration.
- Insomnia: The sleep cycle in our body is moderated by the sleep hormone called melatonin. Blue light alters the sleep cycle by suppressing the production of melatonin, thus making us an insomniac.
How to Prevent Blue Light Damage?
- Get regular eye check-ups: Detecting optical defects at an early stage can save further damage and control the disease or disorder. You must go for a free eye test after every six or twelve months to ensure that your eyes are in their best condition.
- Blink more often: Blinking helps to evenly spread tears in the eyes thus preventing the eyes from getting dry. Make a habit of blinking as much as you can when you sit in front of the screen.
- Adjust brightness: Make sure that your laptop or computer’s brightness is neither too dim nor too dark as compared to the brightness in your room. Try to sit in a brightly lit spot of your house.
- Limit screen time: Extended screen hours put immense stress and strain on the eyes. You can try the 20-20 rule: look far away from your screen every 20 minutes for about 20 seconds.
- Wear blue light glasses: Blue light blocking glasses are an excellent tool to reflect back any blue eyes from reaching your eyes. You can buy these glasses online or ask your optician to add a blue light coating on your prescription or non-prescription glasses.
- Adjust your computer: You must sit at an adequate distance from your computer or laptop. As blue light travels in a straight line, you should place your screen at a height so that the centre of the screen lies 2 to 3 inches below your eye level.
- Add a humidifier: A humidifier is used to send cold and humid vapours in the air to add moisture to the atmosphere. Keeping a humidifier beside your table can keep your eyes from getting dry.
- Use artificial tears: Artificial tears can also be used to lubricate your eyes when they feel too dry. You can put in one or two drops twice a day or after long screen hours.
- Drink more water: Dehydration in your body affects all your organs, including the eyes. Drinking more water can again help your eyes to remain lubricated.
If you are looking to buy blue light glasses online, you can check Specscart’s website for a good variety of glasses and frames at affordable prices. The brand also offers a 24 hour dispatch service so that you don’t have to wait for too long for your glasses to be delivered.