If the lacrimal drainage tube is accidentally dislodged from the inner canthus (commonly known as the corner of the eye), first use a cotton swab to gently push the drainage tube into the inner canthus and it will usually go back. It is not possible to pull out the lacrimal drainage tube from the inner canthus because the doctor sometimes ties the tube in a knot in the lower nasal canal to prevent it from coming out, and pulling the tube from the inner canthus may cause the knot to enter the tear sac and form a foreign body, making it difficult to remove. Dragging the tube from the medial canthus can also result in abnormal nasal secretions being carried into the lacrimal sac, leading to lacrimal sac inflammation. Therefore, if the lacrimal drainage tube does not return on its own, you should seek medical attention promptly.