title: Reply.
authors.affiliation: Hamilton Glaucoma Center, Department of Ophthalmology, University of California San Diego, La Jolla, CA.
authors.forename: Tammy
authors.initials: T
authors.lastname: Kuang
authors.affiliation: Hamilton Glaucoma Center, Department of Ophthalmology, University of California San Diego, La Jolla, CA.
authors.forename: Chunwei
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Hamilton Glaucoma Center, Department of Ophthalmology, University of California San Diego, La Jolla, CA.
authors.forename: Linda M
authors.initials: LM
authors.lastname: Zangwill
authors.affiliation: Hamilton Glaucoma Center, Department of Ophthalmology, University of California San Diego, La Jolla, CA.
authors.forename: Robert N
authors.initials: RN
authors.lastname: Weinreb
authors.affiliation: Hamilton Glaucoma Center, Department of Ophthalmology, University of California San Diego, La Jolla, CA. Electronic address: fmedeiros@ucsd.edu.
authors.forename: Felipe A
authors.initials: FA
authors.lastname: Medeiros