Article History
Received: 25 December 2018
Revised: 18 March 2019
Accepted: 20 May 2019
First Online: 29 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the institutional review board of Kim’s Eye Hospital (Seoul, South Korea). This study was conducted in accordance with the tenets of the Declaration of Helsinki.
: Informed consent was not obtained in this study. Identifying information about participants was not presented in this study.
: The sponsor had no role in the design or conduct of this research.