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.
Pfister RR, Paterson CA, Hayes SA.Pfister RR, et al.Invest Ophthalmol Vis Sci. 1978 Oct;17(10):1019-24.Invest Ophthalmol Vis Sci. 1978.PMID: 700951No abstract available.