title: Correspondence.
authors.affiliation: *Department of Ophthalmology, Haeundae Paik Hospital, Busan, South Korea †Department of Ophthalmology, Inje University College of Medicine, Busan, South Korea.
authors.forename: Kyeong Hwan
authors.initials: KH
authors.lastname: Kim
authors.forename: Wan Soo
authors.initials: WS
authors.lastname: Kim