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.
Langerhorst CT, de Clercq B, van den Berg TJ.Langerhorst CT, et al.Doc Ophthalmol. 1990 Oct;75(3-4):281-9. doi: 10.1007/BF00164842.Doc Ophthalmol. 1990.PMID: 2090403
De Jong LA, Snepvangers CE, van den Berg TJ, Langerhorst CT.De Jong LA, et al. Among authors: langerhorst ct.Doc Ophthalmol. 1990 Oct;75(3-4):303-14. doi: 10.1007/BF00164844.Doc Ophthalmol. 1990.PMID: 2090405