title: Photorefraction: two methods and their clinical applications.
abstract: Photorefraction is an increasingly used research screening tool and numerous studies have demonstrated the simple and effective techniques available. This article describes the eccentric (off axis) and isotropic methods in detail, including the costs and difficulties involved. It is likely that photorefractive screening will become more widespread in its use as a screening tool in detecting the early factors responsible and associated with delayed visual maturation in the very young and that hospital departments of medical illustration may have to become conversant with the use of this new tool.
authors.affiliation: Birmingham and Midland Eye Hospital, UK.
authors.forename: J
authors.initials: J
authors.lastname: Deutsch
authors.forename: T J
authors.initials: TJ
authors.lastname: Smellie
authors.forename: J
authors.initials: J
authors.lastname: Tovey
mesh_terms: D000550:Amblyopia / Q000175:diagnosis*; D002648:Child; D006801:Humans; D008722:Methods; D010781:Photography / Q000379:methods*; D012029:Refraction, Ocular