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Response of the visual system evoked by an alternating current |
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| Authors: | S. Kato M. Saito T. Tanino |
| Affiliation: | 1. Institute of Medical Electronics, Faculty of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan 2. Physiological Laboratory, University of Cambridge, CB2 3EG, Cambridge, England 3. Department of Ophthalmology, School of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan |
| Abstract: | Alternating current stimulation of the eye generates an occipital electrically evoked response (a.c.-e.e.r.) of which the frequency characteristic shows a monophasic pattern for which the optimum stimulus frequency for evoking a maximum response is 18 Hz. A.C.-E.E.R. is a very useful tool for making a diagnosis of pigmentary retinal dystrophy and is different from the e.r.g. in that it is not affected by diseases of the optical system such as strong refractive anomalies or vitreous opacities. |
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