What are the functions of anti blue light glasses? Anti blue light glasses are glasses that can prevent blue light from irritating the eyes. Special anti blue light glasses can effectively isolate ultraviolet rays and radiation, and can filter blue light, making them suitable for use when watching computers, televisions, or mobile phones. This issue has compiled information about the functions of anti blue light glasses for everyone, hoping to be helpful.
As early as 1966, Nell et al. found that exposure to blue light can cause damage to retinal cells, leading to decreased or even lost vision. Among them, shortwave blue light with wavelengths between 400 and 450 nanometers poses the greatest threat to the retina. Blue light irradiation on the retina produces free radicals, which can cause the decline of retinal pigment epithelial cells. The decline of epithelial cells can lead to a lack of nutrients in photosensitive cells, resulting in vision damage, which is irreversible.
Anti blue light glasses can effectively reduce the sustained damage of blue light to the eyes. Through comparative testing with a portable spectral analyzer, the intensity of blue light emitted by mobile phone screens is effectively suppressed after using anti blue light glasses, reducing the harm of harmful blue light to the eyes.
Anti blue light glasses mainly reflect harmful blue light by coating the surface of the lens, or absorb harmful blue light by adding anti blue light factors to the lens substrate, thereby achieving the blocking of harmful blue light and protecting the eyes.
All anti blue light lenses using film reflection technology will reflect harmful blue light on the surface of the lens, while anti blue light lenses using substrate absorption technology will not reflect blue light. As shown in the figure below, the glasses reflecting blue light above are anti blue light glasses.
