It is a normal physiological phenomenon to have a bitter throat after ordering eye drops. Because the tear ducts of the eyes and the nasal cavity are connected, after dropping eye drops, the drops will enter the nasal cavity along the tear duct system and then enter the throat, causing a bitter throat. If you do not have a bitter throat, you should consider the possibility of a blocked tear duct. If you have a bitter throat, it means that the tear duct system is open and healthy. The oral and nasal cavities are connected, and the nasal cavity and the throat are also connected. To avoid the symptoms of bitter throat, you can close your eyes and press the inner canthus with your hand for about 5 minutes to prevent the medicine from entering the nasal cavity during the usual drops.