1 Departments of Ophthalmology (JAA), Ophthalmology (JHJL), and Ophthalmology (TZC), Royal Perth Hospital, Perth, Australia; Department of Ophthalmology (JHJL), Perth Children's Hospital, Perth, Australia; Department of Ophthalmology (JHJL), Sir Charles Gairdner Hospital, Perth, Australia; and Optometry Specsavers Midland (JRG), Midland, Australia.