Right side headache, right eye distension and pain may be glaucoma.1. In glaucoma, patients may have elevated intraocular pressure, which can be manifested as eye distension and pain, and patients may also have headache, nausea and vomiting, and should go to the ophthalmology department for diagnosis and treatment if necessary. It can also be seen in intracranial organic lesions, and the common disease is craniocerebral tumor. Patients with craniocerebral tumor, usually with subacute onset, may gradually have headache, nausea, vomiting, usually with increased intracranial pressure, which may cause increased intraocular pressure, which may cause eye distension and pain, and some patients may have somatic symptoms and signs, which may be manifested as hemiparesis, hemianopsia, hemiplegia, hemiplegia sensory disorder, and may also have vegetative neurological symptoms and signs, and cranial magnetic examination can make a clear diagnosis. 2. craniocerebral tumor is considered, it should be hospitalized in time for comprehensive treatment. In addition, it may be caused by hypertension, and blood pressure should be monitored. When blood pressure is seriously elevated, it may cause hypertensive encephalopathy, patients may have headache due to increased intracranial pressure, and at the same time, eye distension and pain may occur, the main treatment is to lower blood pressure, and clinically, long-acting agents are usually applied, which can be orally administered with levamlodipine, amlodipine benzenesulphonate, and also orally administered with irbesartan. If the patient has increased intracranial pressure, antihypertensive treatment should also be given, and commonly used drugs include mannitol and glyceryl fructose.