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.
Kvanta A, Seregard S, Kopp ED, All-Ericsson C, Landau I, Berglin L.Kvanta A, et al. Among authors: seregard s.Am J Ophthalmol. 2005 Dec;140(6):1002-6. doi: 10.1016/j.ajo.2005.06.025.Am J Ophthalmol. 2005.PMID: 16376642