If you have sleep problems and often use a digital device during the hours before bedtime, see if it has a night mode setting and turn it on. This setting limits blue light exposure by shifting the colors of the display to the warmer end of the color spectrum. Blue light from sunlight and most device screens can boost alertness by reducing the body’s production of melatonin, a hormone that helps trigger sleep.
Some research has also suggested that wearing special yellow-tinted, blue-light-blocking computer glasses (Uvex) for four hours before bedtime may increase nighttime melatonin levels, lengthen sleep duration, and enhance sleep quality.
Besides limiting screen time in the evening, setting devices (including computer screens) to night mode, and wearing special computer eyeglasses, another way to reduce blue-light exposure is to apply blue-light filters to your screens, as described here.
