If patients experience eye swelling and discomfort, it may be caused by ocular hypertension, visual fatigue and refractive error. 1. Glaucoma: Glaucoma is a disease that causes progressive optic nerve damage due to elevated intraocular pressure. In addition to eye swelling, patients may also experience blurred vision, headache and other discomforts. 2. Visual fatigue: If you use your eyes for a long time in close proximity or with fatigue, you may experience symptoms such as soreness, pain and dryness of the eyes. You should pay attention to correcting bad habits and avoiding eye fatigue. 3. Refractive error: Especially patients with hyperopia and astigmatism are prone to fatigue and swelling when they do not wear eyeglasses or eyeglasses of inappropriate prescription. You can wear the right prescription glasses to relieve the discomfort. If eye swelling and other discomforts are not relieved after resting, it is recommended to go to the hospital in time and follow the doctor’s instructions for treatment.