Course of disturbance of EOG in retinal vessel occlusions

Abstract

More than 60 patients with retinal vessel occlusions were examined using the electro-oculogram (EOG) ramp test. In the course of the disease a systematic disturbance of the slow oscillation of the corneoretinal potential occurred. First, the latency of the light peak increased. Then the peak decreased and was reached up to 5 min later than in the healthy eye. In the final stage the basic level dropped to about half of the normal value and light response was absent. During the next few weeks an improvement in the basic level took place, but usually this did not involve improved vision.

Alcohol- and Light-induced Electro-oculographic Responses: Variability and Clinical Utility

“…This includes inconclusive results in age-related macular degeneration (ARMD) [7][8][9][10] as well as normal responses in central serous chorioretinopathy (CSC) [11][12][13] and rubella retinopathy [14]. On the other hand, abnormal responses have been noted in some retinal diseases not associated with RPE damage, such as central retinal artery occlusion [15].…”

Correlation Between the c Wave and the Corneoretinal Potential in Man

“…It is more surpris ing than ever that a reduction in retinal blood supply considerably reduces the SO [3,28] and also the c wave [26]. Therefore, it can be postulated that there is a strong retinal contribution to the SO, which could be pro vided by a metabolic process [22]. In consequence, a retinal coupling mechanism of SO and c wave cannot be excluded, since the second com ponent of c wave (late receptor component) is also retinal.…”

V-2 : l'ELECTRO-Oculogramme

“…D'autres facteurs que l'éclairement peuvent modifier le potentiel transépithélial et perturber la genèse du Light Peak comme les variations de la PO 2 ou du pH au cours de l'ischémie rétinienne par occlusion de l'artère ou de la veine centrale de la rétine avec perturbation fonctionnelle des bâtonnets (Ponte & Lodato, 1978), (Taumer, et al 1982), (Thaler, et al 1977), (Heilig, et al 1979). Il y a alors modification des conditions de genèse du Light Peak et altération de la dynamique de l'EOG qui n'est pas nécessairement synonyme de dysfonctionnement de l'épithélium pigmentaire, du moins en phase initiale.…”