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.
el-Ghorab M, Capone A Jr, Underwood BA, Hatchell D, Friend J, Thoft RA.el-Ghorab M, et al. Among authors: thoft ra.Invest Ophthalmol Vis Sci. 1988 Nov;29(11):1671-6.Invest Ophthalmol Vis Sci. 1988.PMID: 3182202