Why Blue Light Causes More Glare Than Other Visible Light Wavelengths
Glare is one of the most common visual complaints associated with prolonged digital screen use. While brightness and screen contrast play a role, the primary contributor to modern visual glare is blue light. Compared to other visible wavelengths, blue light behaves differently inside the eye, making it more disruptive to visual clarity and comfort. This is precisely where the blue light glasses benefits become clinically relevant, as reducing short-wavelength scatter helps improve contrast, minimise glare, and enhance overall visual comfort during extended screen exposure. The Optical Properties of Blue Light Visible light ranges from long wavelengths such as red to short wavelengths such as blue and violet. Blue light sits at the high-energy end of the visible spectrum and has significantly shorter wavelengths. Because of this, blue light does not focus as precisely on the retina as longer wavelengths like green or red. When light enters the eye, it is refracted by the cornea a...