If your work is too busy, and you do not have enough time to sleep, you can close your eyes, and relieve eyestrain when you answer the phone, or go to toilet. I can also recommend three methods which can help you rest your eyes.
First, let your eyeballs do exercises. If you stare at something for an hour, you can make your eyeballs have some movements to relieve eyestrains. For example, looking up and breathing at the same time, then looking down and breathing, repeat it for three times, finally, do the same movement on the left and right sides.
Second, blinking, blinking can promote the secretion of tears, and make the tears applied on the surface of your eyes, which can keep your eyes moist.
Third, massage around the eyes, you can use your hands to rub and press the area around your eyes, which can contribute to ease your fatigue.
