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Abstract #6716 Published in IGR 4-1
Topographic mapping of retinal function with a scanning laser ophthalmoscope and multifocal electroretinography using short M-sequences
Rudolph G; Bechmann M; Berninger T; Kutschbach E; Held U; Tornow RP; Kalpadakis P; Zol'nikova IV; Shamshinova AMVestnik Oftalmologii 2001; 117: 32-35
A new method of multifocal electroretinography making use of scanning laser ophthalmoscope with a wavelength of 630 nm (SLO-m-ERG), evoking short spatial visual stimuli on the retina, is proposed. An algorithm of the presenting the visual stimuli and analysis of the distribution of local electroretinograms on the surface of the retina are based on short m-sequences. Mathematical cross correlation analysis shows a three-dimensional distribution of bioelectrical activity of the retina in the central visual field. In normal subjects, the cone bioelectrical activity is the maximum in the macular area (corresponding to the density of cone distribution) and is absent in the blind spot. The method detects the slightest pathological changes in the retina under control of the site of stimulation and ophthalmoscopic picture of the fundus oculi. The site of the pathological process correlates with the topography of changes in bioelectrical activity of the examined retinal area in diseases of the macular area and pigmented retinitis detectable by ophthalmoscopy.LA: Russian
Classification:
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
