Nihat Sayin, Department of Ophthalmology, Kanuni Sultan Suleyman Education and Research Hospital, 34303 Istanbul, Turkey
Necip Kara, Department of Ophthalmology, Gaziantep University, 27000 Gaziantep, Turkey
Gökhan Pekel, Department of Ophthalmology, Pamukkale University, 20070 Denizli, Turkey
Author contributions: Sayin N, Kara N and Pekel G contributed to this paper.
Conflict-of-interest: The authors declare no conflicts of interest regarding this manuscript.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Nihat Sayin, MD, Department of Ophthalmology, Kanuni Sultan Suleyman Education and Research Hospital, Atakent Mahallesi, 4. Cadde. C 2-7 Blok. Kat: 3 Daire: 13. Kücükcekmece, 34303 Istanbul, Turkey. email@example.com
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Received: July 9, 2014
Peer-review started: July 9, 2014
First decision: September 23, 2014
Revised: November 22, 2014
Accepted: December 3, 2014
Article in press: December 10, 2014
Published online: February 15, 2015