Elektroretinograpbie bei Morbus Beh�et

Abstract

Rod- and cone-system electroretinograms from 16 patients suffering of recurrent posterior uveitis and one or more symptoms of Behçet's disease were studied. On the basis of an evaluation of the clinical picture and of the progression three stages of the disease were distinguished. These stages were compared to the changes in amplitude of the b-waves of the ERGs (Fig 1). The findings in this group of patients were also compared to those from 11 patients with "simple" posterior uveitis (Fig. 2). The electroretinographic results in both these groups were highly similar: in all patients progression of the ocular disease was accompanied by parallel reduction in amplitude of the b-wave of the ERG. All ERG responses were affected in a similar way: the rod-system was in general more severly affected than the cone-system in both groups of patients. On the basis of these data it appears that the ERG indicates the stage of retinal damage in posterior uveitis. However, we could not detect ERG changes characteristic for the Behçet type of uveitis.

Cross-sectional Study of Visual Acuity and Electroretinogram in Two Types of Dominant Drusen

“…20 In addition, the functional deficit seen in the ERG may diverge from perimetric results, which is not uncommon in retinitis pigmentosa. 21 On a cellular and molecular level, it is well possible that gene defects affect both cone and rod photoreceptors, al- 12 , **Knobel and Niemeyer, 13 and ***Steiner 14 . Data are the mean Ϯ 2SD results of the three methods used.…”

“…Particularly, we studied cross-sectionally the changes with age in ML and ZMD of visual acuity; extent of macular dystrophy signs, such as drusen or alterations in pigment epithelium; and Ganzfeld ERGs. The Ganzfeld ERGs were recorded according to the methods referred to in previous publications, [12][13][14] using Henke low-vacuum contact lens electrodes throughout. These methods were largely in accordance with the International Society for Clinical Electrophysiology of Vision (ISCEV) standards.…”

Clinical and ERG data in a family with autosomal dominant RP and Pro-347-Arg mutation in the rhodopsin gene

“…We used two pairs of color filters, which were matched for the rod and for the cone system, in a ganzfeld sphere [9][10][11][12]. The amplitudes and peak times of the b-waves were compared with our normative data [13]. Dark adaptation was recorded by means of the Goldmann-Weekers method using an 11 ~ black and white stripe target at the subjectively preferred part of the visual field with 5 min of light adaptation, followed by recording thresholds for 30 min in darkness.…”

Analysis of the electroretinogram in toxoplasma retinochorioiditis

“…Normal ERGs were described in those patients in whom relatively localised detoriation of the retina was observed [1][2][3]. Subnormal responses were reported to be associated with disseminated chorioretinitis [2, 3,[5][6][7][8]. Since the stimulation method was not standardised in these studies, in particular where the recording of the photopic components of the ERG was concerned, data are difficult to compare.…”