The Ocular Hypertension Treatment Study

Abstract

SURVEYS SHOW that glaucoma is among the leading causes of blindness in the United States and worldwide.^1-5 It is estimated that more than 2.5 million people in the United States have glaucoma and that more than 130 000 people are legally blind from the disease.⁴ Population surveys indicate that less than 50% of those with glaucomatous visual field loss have received an appropriate diagnosis or treatment.^6-8