Do Blue Light Blocking Glasses Actually Work?
In the modern era, there is hardly a person who does not spend some time in front of the screen. Whether it be a smartphone display or a computer monitor, we tend to have exposure to some harmful light. Particularly, individuals who are working over computers and spend most of their time in front of screens are likely to experience dry and tired eyes. In such circumstances, when you seek help, there are chances that you might have been suggested blue light blocking glasses .Surely in Canadian online glasses forums.
However, most of the people don’t know much about the lenses that block blue light. Here, we are going to discuss what it is, how it works and is it worth your money.
What are blue light glasses?
Blue light glasses are the lenses that are made particularly to block or filter blue light that is coming from our digital screens. It is to protect one’s eyes from the glare emitted from such screens and reduce any potential damage which can harm your eyesight. Increased exposure to blue light can damage your retina and, therefore, you need appropriate protection if you have prolonged exposure to digital screens. This protection can be offered by blue light filtering glasses.
How blue light glasses work?
Light rays fall on our retina, helping us to see things around. Retina of a person consists of rods and cones that sense light. When these light-sensing nerve cells, rods, and cones, are exposed to blue light for long duration, they suffer from damage. So, the black part of our eyes need protection from harmful blue light rays.
To understand the working of blue light filtering glasses, we have to study the wavelengths a bit deeper. The spectrum contains blue light at one end and red light on the other end, with the former having the shortest wavelength and the later having the longest. What happens due to the short wavelength is that the energy level is enhanced, meaning that the energy in blue light is highest.
Therefore, we need lenses that can filter out the shorter wavelength and take away blue light before it can fall on our retina. Blue light glasses help us to a great extent in this regard. They filter out between 10% and 90% of the blue light and our eyes are protected from its harmful effects.
What to look for when selecting blue light glasses?
Selecting the right blue light prescription eyeglasses online canada very important. You need to be careful in your choice or else you will choose a pair that won’t do any good to your vision. The following are three considerations that you should never overlook.
The coating is key to having a good blue light filtering glasses. Different brands use a few different ways of coating your lenses and usually it is prey similar to SPF or UV protection layer. As you go out to purchase these glasses, you are likely to find the option of ‘anti-glare’ and ‘anti-reflective’ coating.
Anti-glare layering helps a person in lowering the external reflection. So, you don’t experience the glare that is usually present as you go out in bright light, mostly sun glare. Thus, these glasses are great for outdoor usage.
On the other side, you have an anti-reflective coating. It is invisible to the human eye and you may see a blue or green tone as you try reflecting some light. They are suitable for indoor and outdoor usage, particularly in low light environments and night driving.
UV light protection
UV light damages our vision and many people overlook UV protection as they work on filtering blue light. So, as you attain lenses that can take away blue light from your eyes, make sure that there is UV protection too. Else, you may protect your eyes from one risk but will expose it to another.
There are four primary materials used in making lenses. These are:
- Polycarbonate: Provide great resistance to impacts and have built-in protection from UV rays
- Trivex: Lightweight, thin, pretty similar to polycarbonate, and comes with vision correction feature
- Photochromic: Great for blocking sun rays and can change from clear to tinted as you go under sunlight.
- Polarized: Perfect for lowering glare from surfaces and preferred choice for people who play sports or drive a lot
Will blue light blocking lenses darken my vision?
There is a common misconception that blue light darkens the vision. Many people experience this problem because the eyeglasses Canada online vendor they choose is not up to the mark. If you go for amber lenses that come with appropriate layering, the blue light will be blocked without damaging your vision.
Who should wear these glasses?
Many people come up with a question that who and when to wear blue light blocking glasses. Well, if you are a person who has any kind of exposure to digital screens, you should invest in these lenses. They help in protecting your eyes by managing light exposure.