Emitted from devices like our cell phones and TV screens, blue light is often associated with our electronic devices. It also comes from fluorescent and LED bulbs, as well as the sun. This type of light has a specific wavelength and energy level, just like the other colours in the rainbow. Specifically, blue emits a shorter wavelength and higher energy than most other types of light, which can have various health results.
Today, let’s learn more together about blue light’s effect on the eyes.
Exposure to Different Types of Light
Each light wave has a wavelength and energy level associated with it. Longer wavelengths emit less energy, so they are thought of as less harmful. Red, for example, has the longest wavelength, while violet has the shortest. Blue is only slightly longer, still creating energy levels that can be damaging to different areas of the eye, notably the retina, which is the most sensitive part.
Possible Vision Problems
Several studies have shown that increased exposure to high-energy light can lead to eye disease. Medical professionals have linked the blue light from our screens to causing similar issues, such as computer vision syndrome, which involves dry, irritated eyes and blurred vision. Furthermore, this light is known to cause issues in your sleep cycle, and experts recommend avoiding devices at least two hours before bed.
Possible Health Benefits
Although some research indicates blue light can be a bad thing, there are a few research studies that suggest it can have health benefits. These include increased alertness and boosting your cognition function and memory. There is also evidence to suggest it can help with acne problems and some skin conditions, such as psoriasis.
Protecting Your Eyes
It might seem difficult to avoid this type of light when it is all around us. However, there are a few actions you can take to reduce its impact on your eyes. Decrease your screen time where possible, for instance. Or, if you need to use a screen frequently, use the brightness filters in your settings to change the base colour to a warmer tone. You might also try wearing computer glasses, which filter the screen’s colour through a yellow lens.
If you’re concerned about blue light’s effects on your eyes, consider speaking with an optometrist here at Laurier Optical. We can provide blue light solutions when it comes to eye care and offer our insights on how to better protect your vision. Contact us to learn more.
Article has been reviewed by an Optometrist.