Abstract: Ocular hypertension is popular among people,with a prevalence of 3% to 10% in those older than 40 years old.Without proper intervention,over 10% of the patients with ocular hypertension would develop glaucoma in the following 5 to 10 years.Glaucoma has become one of the leading causes of blindness all over the world,which makes it essential for us to pay enough attention to the prevention and treatment of ocular hypertension.However,it is not cost-effective to treat all the patients with ocular hypertension.Certain side effects may also be caused with long-term medical treatment.Therefore,it is of great importance for ophthalmologists to identify the right time and use appropriate therapeutic methods.To introduce the knowledge of ocular hypertension,the definition,epidemiology,diagnosis,risk factors and treatment of ocular hypertension are reviewed in this article.