Document is current

Article History

Received: 14 July 2019

Accepted: 30 December 2019

First Online: 7 January 2020

Compliance with ethical standards

:

: All authors declare that they have no conflict of interest.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of ICARE eye hospital and postgraduate institute, Noida, UP, India, and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.

: The procedures followed in this study in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000 and 2008.

: No animals were involved in this study.

: Informed consent was obtained from all individual participants included in the study.