An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Sheppard AL, Davies LN.Sheppard AL, et al.Invest Ophthalmol Vis Sci. 2011 Mar 28;52(3):1809-16. doi: 10.1167/iovs.10-6447.Invest Ophthalmol Vis Sci. 2011.PMID: 21071738
Alderson A, Davies LN, Mallen EA, Sheppard AL.Alderson A, et al. Among authors: sheppard al.Optom Vis Sci. 2012 May;89(5):E738-48. doi: 10.1097/OPX.0b013e3182501b1e.Optom Vis Sci. 2012.PMID: 22466104