Eye drops before going to bed is perfectly fine, and even the effect of drops before going to bed is better than the effect of drops during the day, during the day after drops will soon open the eyes, the drops will evaporate part of only part of the eye absorption; night before going to bed drops, eyes closed drops can be fully absorbed by the eyes, can play a better therapeutic effect. Glaucoma eye drops, for example, eye pressure is relatively high during the day and relatively low at night may require daytime drops to play a role in reducing daytime eye pressure; high eye pressure at night can be nighttime drops to play a role in controlling nighttime eye pressure.