Bakunzho eye drops can be used before bedtime, and there is no rule that can not be used before bedtime. But the use of medication should follow the doctor’s instructions, do not self-medication. Paiyunzhuo eye drops are mainly composed of ice tablets, glycerite, musk, borax, etc., with cataracts and eyesight, detoxification and dissipation, anti-inflammatory and analgesic effects. It is commonly used to treat eye diseases such as keratitis and conjunctivitis. When using this medicine for treatment, patients need to go to the ophthalmology department of the hospital for examination first, and the doctor will decide the specific number of times to use the medicine according to the patient’s condition. It is also possible to order the medicine before going to bed, and there is no such thing as not being able to use the medicine before going to bed. Patients should pay attention to the regular review during the use of medication, according to the condition of the improvement of the situation, by the doctor to adjust the medication program.