The best way to reduce DES is to take a break from looking at digital screens and ultimately protect your vision.  Here are a few more tips to reduce DES:nFollow the 20/20/20 rule. An easy way to remember to reduce DES is to follow the 20/20/20 rule, which means to take a break every 20 minutes for as long at least 20 seconds and look at something else that is about 20 feet away.nBlink. The average person blinks about 18 times per minute. Workers who are on computers for extended periods significantly blink less than that.  This causes dry eyes and will lead to DES.  Remember to blink often and slowly to keep your eyes moist.