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.
Tan NW, Saw SM, Lam DS, Cheng HM, Rajan U, Chew SJ.Tan NW, et al. Among authors: chew sj.Optom Vis Sci. 2000 Sep;77(9):465-72. doi: 10.1097/00006324-200009000-00007.Optom Vis Sci. 2000.PMID: 11014673Clinical Trial.
Saw SM, Chia SE, Chew SJ.Saw SM, et al. Among authors: chew sj.Optom Vis Sci. 1999 Jun;76(6):393-6. doi: 10.1097/00006324-199906000-00019.Optom Vis Sci. 1999.PMID: 10416934
Zhan MZ, Saw SM, Hong RZ, Fu ZF, Yang H, Shui YB, Yap MK, Chew SJ.Zhan MZ, et al. Among authors: chew sj.Optom Vis Sci. 2000 Jun;77(6):302-8. doi: 10.1097/00006324-200006000-00010.Optom Vis Sci. 2000.PMID: 10879787