There is no drop of eye drops in the world that can compare with human tears. Eye drops like Zhenshiming (basically containing no medicine) are just imitating the effect of tears. If you use your eyes for a long time, your eyes will be tired, just like muscle fatigue will be sore, and the local pH of your eyes will decrease, which will cause discomfort. Zhenshiming eye drops are a kind of buffer, which can adjust the pH of your eyes to a suitable level, that's all. It costs no more than one and a half yuan.

Solution: (1) Limit eye time, look farther every hour and do eye exercises. (It is definitely more effective than eye drops, and it is aimed at the root cause. )

(2) At this time, the eye resistance is low. If it itches badly, prevent conjunctivitis. If it is conjunctivitis, it is recommended to go to the hospital for sensitive bacteria culture and choose antibiotics accordingly.