number of people in the us with glaucoma
As of 2010, there were 44.7 million people in the world with open angle glaucoma. The same year, there were 2.8 million people in the United States with open angle glaucoma. By 2020, the prevalence is projected to increase to 58.6 million worldwide and 3.4 million the United States. Both internationally and in the United States glaucoma is the second-leading cause of blindness. Globally cataracts are a more common cause.