[Perception of the blind spot with Rauschfeld campimetry. An additional diagnostic criterion in papillary changes].
In conventional test point perimetry the optic disc is detected as an absolute scotoma (blind spot). However, in white noise campimetry the blind spot usually cannot be perceived: the white noise is continuous over the whole field if presented to a normal eye. This is true not only for the blind spot but also for all scotomas caused by congenital damage to the retina or the visual pathway (e.g. colobomas). On the other hand, the blind spot is always perceived in white-noise campimetry if acquired damage to the peri-cecal region is present. In such cases this method can give important information concerning the etiology of an enlarged blind spot detected with conventional test point perimetry. In addition during the follow-up of a papilledema, fading of the perception of the blind spot in the white-noise field indicates when the edema is resolved. Results of white-noise campimetry in papilledema, glaucomatous atrophy of the optic disc and anterior ischemic optic neuropathy are presented and compared with findings of conventional test point perimentry.
Aulhorn
E
E
Abteilung für Pathophysiologie des Sehens und Neuroophthalmologie, Universitäts-Augenklinik, Tübingen, Bundesrepublik Deutschland.
Schiefer
U
U
Herzau
V
V
D005901:Glaucoma / Q000175:diagnosis*; D006801:Humans; D009901:Optic Nerve Diseases / Q000175:diagnosis*; D012607:Scotoma / Q000175:diagnosis*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012984:Software; D058609:Visual Field Tests / Q000295:instrumentation*
Die Wahrnehmung des Blinden Flecks bei der Rauschfeldkampimetrie. Ein zusätzliches diagnostisches Kriterium bei Papillenveränderungen.