What is Blue Light? By Benjamin V. Clingan, OD

  • Posted on: Jan 29 2018
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Last post, we discussed Computer Vision Syndrome (CVS) and how proper ergonomics with proper blinking can improve your screen time with electronic devices. Over the next few posts, we will focus on ways to prevent possible damage from the blue light emitted from your electronic devices and LED lights.

What is BLUE LIGHT?

Back to high school physics, light is composed of photons, and those photons travel in waves. White light when separated by a prism or a refractive surface (your eye) can be isolated into different colors (think of the Pink Floyd album cover for The Dark Side of the Moon). Each color has its own specific wavelength.

As we have switched from traditional incandescent light bulbs and old generation TVs to LED lights and LED screens for cell phones, tablets, PCs, etc., the wavelengths of the light emitted has changed from longer wavelengths (reds/yellows) to shorter wavelengths (blues). This change is different from natural light sources (the Sun, fire), and scientists are discovering that there are physiologic consequences.

Follow us next time as we discuss the potential problems blue light has on our bodies and specifically our eyes. Make sure to schedule your Routine Eye Exams and feel free to schedule an appointment or visit our optical to discuss how to protect your eyes from blue light.

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Posted in: Blue Light (HEV), Healthy Eyes, HEV Blue Light, Visual Health Tips

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