Silver Book Fact
An estimated 2.3 million Americans 40 and older currently have glaucoma. That number is expected to grow by 50% to 3.36 million by 2020.
Friedman, David S., Roger C.W. Wolfs, Benita J. O'Colmain, Barbara E. Klein, Hugh R. Taylor, Sheila West, M. Cristina Leske, Paul Mitchell, Nathan G. Congdon, and John Kempen. Prevalence of Open-Angle Glaucoma Among Adults in the United States. Archives of Ophthalmology. 2004; 122(4): 532-8. http://www.ncbi.nlm.nih.gov/sites/entrez?db=pubmed&uid=15078671&cmd=showdetailview&indexed=google