Excessive use of eyes can easily cause dry eyes, so it is really necessary to replenish water to the eyes. But it is not appropriate to wash eyes directly with cold water, because cold water contains more bacteria and harmful substances. You can drop some eye drops on it. Cold water cools down. After cooling, you can wash your eyes with boiling hot water and cold water. Wash your face and eyes with cold water after getting up in the morning. Soak your eyes in cold water for 1 min, then wipe your face and eye muscles, and then gently rub them with your hands for 20 ~ 40 times. When you are free, you can open your eyes and close your eyes to cheer up and maintain your eye muscles.