Eye drops should not be used regularly, but only when indicated for use. If there are no indications for use, blind use of the drug may have adverse effects. First of all, all drugs have toxic side effects, so blind use of drugs may bring toxic side effects to the eyes. Secondly, any eye drops contain preservatives, and when eye drops are used for a long time without indications, the preservatives may affect the eye environment, which may lead to the occurrence of dry eye or aggravate the symptoms of dry eye, such as dryness, soreness, foreign body sensation and burning sensation in the eyes. Therefore, it is recommended not to use eye drops blindly or without any indication for their use, which not only fails to have a therapeutic effect, but may also bring more side effects to the eyes.