Swelling of eyes and headache may be caused by visual fatigue, glaucoma and high blood pressure. 1. Visual fatigue: patients who use their eyes excessively for a long time can lead to visual fatigue, which can cause discomfort such as dryness and pain in the eyes, and in serious cases, headache and dizziness, which can be relieved after proper rest. 2. Glaucoma: Glaucoma patients with elevated intraocular pressure, eye swelling and pain, headache, severe conditions, nausea, vomiting and other discomforts, patients can follow the doctor’s instructions to use brinzolamide eye drops and other medications, to control intraocular pressure, relieve discomfort. 3. Hypertension: If the blood pressure of hypertensive patients rises sharply, eye pain, headache, dizziness and other discomforts may also occur, and patients need to treat hypertension, and the symptoms can be relieved after the blood pressure is stabilized. It is recommended that patients with significant eye pain and headache should consult a doctor in time to assess their condition and under the guidance of a physician.