@article{doi:10.1001/jama.2012.85685,
author = {Ko F and Vitale S and Chou C and Cotch M and Saaddine J and Friedman DS},
title = {PRevalence of nonrefractive visual impairment in us adults and associated risk factors, 1999-2002 and 2005-2008},
journal = {JAMA},
volume = {308},
number = {22},
pages = {2361-2368},
year = {2012},
doi = {10.1001/jama.2012.85685},
URL = { + http://dx.doi.org/10.1001/jama.2012.85685},
eprint = {/data/Journals/JAMA/926059/joc120124_2361_2368.pdf}
}