For those who are unfamiliar with the term, we can help clarify the terminology. Light comes in different coloured wavelengths such as red, green, orange, yellow and blue. Each wavelength has its own energy. However, blue light is a fracture of the light wavelength that the human eye can see. It is also the highest energy in the visible spectrum.
People may not know this, but we are constantly exposed to blue light in our everyday life. As a result, you have a higher chance of damaging your eyes coming from artificial lights, televisions, and other digital screens such as smartphones, tablets, and computer screens.
Research shows that extensive blue light exposure may lead to age-related macular degeneration. In other words, it's a condition that affects the central part of the eye (the retina), causing blurred or loss of central vision. In addition, blue light is responsible for regulating our sleep-wake cycle. Therefore, moderate exposure to blue light during the day is beneficial because it helps keep us awake. But, overexposure to it from digital screens, especially at night, can be harmful, causing eye strain, blurry vision, dry eyes, headaches, migraines and disruption in your sleep pattern.