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Erschienen in:
01.12.2007 | Clinical Investigation
Transcorneal electrical stimulation of retina to treat longstanding retinal artery occlusion
Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology | Ausgabe 12/2007
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Purpose
To report the outcome of transcorneal electrical stimulation (TES) of the visual system on long-standing retinal artery occlusion (RAO).
Design
Open labeled, case series.
Patients and methods
Two patients with central RAO (15 and 33 months respectively) and one with branch RAO (26 months) underwent TES therapy. Subjective and objective ophthalmological evaluations were performed before and after the TES. The ages of the patients were 38, 49, and 63 years. The TES (20 Hz biphasic pulses, 30 minutes, up to 1100 uA) was delivered by a bipolar contact lens electrode once a month for 3 months. Perimetric and/or electrophysiological examinations were performed as outcome measures.
Results
The visual acuity improved by more than 0.2 logMAR units in two cases, and the visual fields were improved in all three cases. The multifocal ERGs which had been reduced in the loci corresponding to the ischemic retinal area were improved after the treatment in two cases. Neither ocular nor systemic adverse effects were observed except for transient superficial keratitis.
Conclusions
TES of the retina can improve retinal function in eyes with long-standing RAOs.