title: The optical spacer--a simple device which extends the scope of indirect ophthalmoscopy.
abstract: A simple device is described which both facilitates and significantly extends the scope of indirect ophthalmoscopy.
authors.affiliation: Tennent Institute of Ophthalmology, University of Glasgow.
authors.forename: D M
authors.initials: DM
authors.lastname: Montgomery
mesh_terms: D005403:Fixation, Ocular; D005654:Fundus Oculi; D006801:Humans; D019721:Ophthalmoscopes; D055095:Optics and Photonics; D014794:Visual Fields