High intraocular pressure can cause dizziness. High intraocular pressure can cause headaches, eye pain, nausea, and vomiting, which are similar to symptoms of cerebrovascular disease. If such patients also have unstable blood pressure, hypertension or neurological disorders, they can exhibit dizziness, which is often clinically confusing in such patients. Therefore, patients with dizziness who also have a history of glaucoma or a family history of glaucoma or suspected glaucoma must not forget to check for glaucoma and exclude it. So the main symptom of high IOP is not dizziness, but headache, eye pain, nausea, vomiting, but some patients do not have high IOP, such as patients with chronic glaucoma, mildly high IOP may show dizziness, or the patient’s complaints are not clear and there are many symptoms listed together, do not forget to measure IOP to rule out glaucoma conditions.