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.
Harris SL, Magnus DE.Harris SL, et al. Among authors: magnus de.J Am Optom Assoc. 1984 Nov;55(11):845-6.J Am Optom Assoc. 1984.PMID: 6512147No abstract available.
Onofrey BE, Jones WL, Magnus DE.Onofrey BE, et al. Among authors: magnus de.J Am Optom Assoc. 1984 May;55(5):337-9.J Am Optom Assoc. 1984.PMID: 6725829No abstract available.