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.
Yousef YA, Finger PT.Yousef YA, et al. Among authors: finger pt.Arch Ophthalmol. 2012 May;130(5):599-606. doi: 10.1001/archophthalmol.2011.2566.Arch Ophthalmol. 2012.PMID: 22652846