title: [Perimetry equivalents of glaucoma progression].
abstract: Loss of sensitivity in chronic open-angle glaucoma is generalized, but heterogeneous. Particular parts of the visual field deteriorate proportionally, which also applies to the spatial behaviour. The proportionality factor and the slope of decay are most pronounced at the nasal and superior border of the field. In single cases, the topography of the field is variable, but it follows the retinal nerve fiber lines. For follow-up, topography seems to be unimportant. A number of standard threshold programs are adequate for this task. For follow-up the same type of instrument and the same program should always be used. The optimal value for analysis in perimetric follow-up is so far unknown. Although progression is often not linear, linear regression seems to be the most suitable statistical procedure. Some new methods of visualization help to process the information like the double representation, GATT, time diagram or the gray-scale bar.
authors.affiliation: Universitäts-Augenklinik Köln.
authors.forename: J
authors.initials: J
authors.lastname: Weber
mesh_terms: D005902:Glaucoma, Open-Angle / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012984:Software; D058609:Visual Field Tests / Q000295:instrumentation*; D014794:Visual Fields / Q000502:physiology
vernacular_title: Perimetrische Aquivalente der Glaukomprogression.