Swelling and pain in the eyes when wearing contact lenses may be related to pathological factors such as eye injury, dry eye or non-pathological factors such as improper wearing and contact lens quality problems. 1. Pathological factors: long-term contact lens wear, eye uncleanliness, caused by local inflammation, epithelial damage, conjunctival corneal damage; or the patient himself suffers from dry eye, can lead to eye swelling and pain. At this time, you need to use medication under the guidance of a doctor. 2. Non-pathological factors: such as wearing contact lenses improperly or choosing poor quality contact lenses, resulting in ocular discomfort, eye sensitivity, eye swelling and pain can also occur; contact lenses can be removed in time, stop wearing for a day or two, usually relieved by themselves. If non-pathological factors are ruled out and the symptoms are not relieved, do not take any unauthorized treatment or therapy, and seek medical advice in time.