- Correspondence to Dr Kumari Neelam, Department of Ophthalmology and Visual Sciences, Khoo Teck Puat Hospital, 90 Yishun Central, Yishun, Singapore 768828, Singapore;
- Received October 17, 2016
- Revised December 21, 2016
- Accepted January 21, 2017
- First published February 23, 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.