Considering a pair of blue light glasses? Let’s see what the science says.
Lab and animal testing found that visible light with shorter wavelengths of 400 to 500 nm (i.e. responsible for the colors violet and blue) can damage your eye (1-5). It was also suggested that this ‘blue light’ could cause eye strain and impact our sleep cycle (1,6,7). The main source of blue light is the sun a.k.a daylight, but LED lights, which are used in our house and to backlit our screens, also emit blue light (1,8).
Companies saw an opportunity and started to advertise and sell these blue-light filtering glasses as a tool to reduce eye damage and eye fatigue (9). However, while concerns about the potential harm of blue light on our eyes are valid, the effectiveness of blue-light filtering glasses in mitigating these effects in humans is still inconclusive (1,10-17).
Discuss with your optometrist about their cost and the limited evidence regarding their benefits before buying any blue-light filtering glasses.