Eyes feeling swollen may be caused by overuse of eyes, visual fatigue, or may be caused by high intraocular pressure, glaucoma, Graves’ eye disease and other diseases. 1. Excessive use of eyes: long time reading or electronic products, the eyes will be swollen, also can be accompanied by dry eyes, astringency and other symptoms. 2. Glaucoma: Glaucoma is a common cause of eye swelling, which is mainly related to increased intraocular pressure. In addition to the symptoms of eye swelling and pain, headache, vision loss, and increased blood pressure may also occur. 3. Graves’ ophthalmopathy: It is a thyroid-related eye disease. When suffering from Graves’ ophthalmopathy, there will be symptoms such as eye swelling and pain as well as outward protrusion of the eyeballs and swelling of the eyelids. If you feel that your eyes are swollen, you should go to a regular hospital in time to clarify the cause of the disease and follow the doctor’s instructions for treatment.