title: Filtration surgery as the initial therapy for open-angle glaucoma.
authors.affiliation: Department of Ophthalmology, University of Florida, Gainesville, Florida, U.S.A., and *Western Ophthalmic Hospital, St. Mary's Hospital, and daggerMoorfields Eye Hospital, London, England.
authors.forename: M B
authors.initials: MB
authors.lastname: Sherwood
authors.forename: C S
authors.initials: CS
authors.lastname: Migdal
authors.forename: R A
authors.initials: RA
authors.lastname: Hitchings