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.
Dichtl A, Jonas JB, Mardin CY.Dichtl A, et al.Am J Ophthalmol. 1996 May;121(5):494-501. doi: 10.1016/s0002-9394(14)75423-6.Am J Ophthalmol. 1996.PMID: 8610792