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.
Sloan BH, McNab AA, McKelvie P.Sloan BH, et al.Aust N Z J Ophthalmol. 1999 Feb;27(1):45-8. doi: 10.1046/j.1440-1606.1999.00160.x.Aust N Z J Ophthalmol. 1999.PMID: 10080337