. 2007 Nov-Dec;55(6):445–450. doi: 10.4103/0301-4738.36480
Copyright: © Indian Journal of Ophthalmology
This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.