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.
Hollingsworth RS, Ludlow AK, Wilkins AJ, Calver RI, Allen PM.Hollingsworth RS, et al. Among authors: allen pm.Optom Vis Sci. 2015 Jun;92(6):690-9. doi: 10.1097/OPX.0000000000000595.Optom Vis Sci. 2015.PMID: 25909239
Engel SA, Wilkins AJ, Mand S, Helwig NE, Allen PM.Engel SA, et al. Among authors: allen pm.Vision Res. 2016 Aug;125:41-8. doi: 10.1016/j.visres.2016.05.003. Epub 2016 Jun 8.Vision Res. 2016.PMID: 27264027Free article.
Ludlow AK, Giannadou A, Franklin A, Allen PM, Simmons DR, Wilkins AJ.Ludlow AK, et al. Among authors: allen pm.Vision Res. 2020 May;170:53-59. doi: 10.1016/j.visres.2020.03.007. Epub 2020 Apr 4.Vision Res. 2020.PMID: 32259647Free article.