title: Reply.
authors.affiliation: *Department of Ophthalmology, Changhua Christian Hospital †College of Medicine, Kaohsiung Medical University ‡Department of Ophthalmology, Taiwan Medical University Hospital §College of Medicine, National Taiwan University.
authors.forename: San-Ni
authors.initials: SN
authors.lastname: Chen
authors.forename: Chung-May
authors.initials: CM
authors.lastname: Yang