Blue Light: Its Effects On Eyes And The Role Of Blue Light Glasses
The digitalisation wave has increased our exposure to digital screens by a considerable amount. In many cases, utilising the digital medium is not an alternative, but the only way out, considering the fast-paced modern life that all of us have been subjected to.
Digital screens are known to emit blue light. With the increase in screen time, it is the exposure to blue light that has also increased. There is a lot of talk around whether blue light is harmful to the eyes or not. In this writeup, we will discuss this in detail.
Recently, when I was surfing over the web, looking to order eyeglasses online, I found a huge variety of blue light glasses available here too. The sale of these glasses have skyrocketed, especially since the onset of the COVID-19 pandemic. Here, we will also look into whether the blue light glasses are worth the hype. Let’s get started!
What is blue light?
Before moving ahead, it is very important that we understand what blue light actually is. The visible spectrum of light – the spectrum which is visible to the naked eye – has many components. Blue light is just one of those components. The characteristic of blue light that is under focus, in order to understand its effect on the eyes, is its relatively higher frequency.
Blue light is emitted from both natural and artificial sources. Sun is the natural source and also responsible for the major portion of blue light that is incident on earth’s surface. The artificial sources of blue light include LED lights, fluorescent lamps, digital screens (the one under extensive consideration). There are more artificial sources but these are the major ones.
Can blue light harm the eyes?
A fact that many are not aware of is that blue light has a lot of benefits. It is known to keep us alert and active, facilitate sleep by keeping our circadian rhythm aligned, and also proven to be effective for mental health issues. But there is a condition that applies here. The exposure to blue light needs to be in the right amount and at the right time. If the above condition is not satisfied, blue light can cause more harm than good. But, when does it exactly get harmful?
Below are the circumstances under which blue light can cause harm to your eyes –
- If the exposure is excessive, i.e, it exceeds a certain threshold.
- When you are exposed to blue light towards the fag end of the day – beyond sunset and especially before going to bed.
- Exposure under dim light conditions can also be harmful as it results in an increase in strain on the eyes.
The kind of problems that you might experience due to the above-mentioned circumstances include digital strain, headaches, dry eyes, blurry vision, among others.
Do blue light blocking glasses help?
Once the problems related to blue light started getting prominent, those in the eyewear industry came out with glasses that block blue light, with the objective of protecting the eyes. But do these glasses serve the intended objective?
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Blue light blocking glasses consist of a coating that is applied on the lenses, known as blue light coating. The function of this coating is to block the blue light falling on the lens surface and prevent it from striking the eyes. Going by the consumers’ experience up till now, these glasses have been effective in performing their objective of protection of eyes.
If you too have a significant exposure to blue light, it is highly recommended that you get a pair of glasses that block blue light. You can buy these glasses online, where you will find stylish pairs at affordable prices..
Things to keep in mind while buying blue light glasses online
There are lots of benefits that come along with online glasses. To avail them, it is important that you be mindful of certain things. Here they are!
If you already have an existing pair of glasses and now have realised the need for blue light glasses, you can send your existing pair for reglazing and get your lenses replaced with the blue light protective ones. This will not only ensure that you don’t depart from your lovely frames but also help you make some significant savings.
Before finalising your purchase, you even have the option of trying out your glasses from the comforts of your home. It is highly recommended that you avail the home trial service, which is absolutely free of cost at most sites.
Same day glasses
These days, the delivery of online glasses has become real quick. If your requirement is urgent, you can even try out same day glasses in the UK. Same day glasses are those pairs that are delivered within 24 hour of you placing the order.