The patient’s eyes feel distended, usually due to visual fatigue or glaucoma. 1. Visual fatigue: patients who need to use their eyes for a long time at close range in life or at work are prone to visual fatigue, which is mostly caused by ciliary muscle spasms triggered by overuse of the eyes, and the patients usually suffer from discomfort such as soreness and dryness of the eyes. 2. Glaucoma: patients with glaucoma usually have elevated intraocular pressure (IOP), because of the stimulation of high IOP, patients may experience eye swelling and pain, photophobia, tearing, vision loss and other uncomfortable symptoms, IOP is obviously high patients may also experience nausea, vomiting and other uncomfortable symptoms. It is recommended that patients with significant eye distension should seek prompt medical attention to assess their condition and follow the doctor’s instructions to choose the appropriate treatment.