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Transcorneal electrical stimulation improves visual function in eyes with branch retinal artery occlusion

Authors Shinichirou Oono, Kurimoto T, Kashimoto R, Tagami Y, Okamoto N, Osamu Mimura

Published 23 March 2011 Volume 2011:5 Pages 397—402


Review by Single anonymous peer review

Peer reviewer comments 3

Shinichirou Oono, Takuji Kurimoto, Ryosuke Kashimoto, Yuichi Tagami, Norio Okamoto, Osamu Mimura
Department of Ophthalmology, Hyogo College of Medicine, Hyogo, Japan

Purpose: To investigate the effects of transcorneal electrical stimulation (TES) on eyes that have a branch retinal artery occlusion (BRAO).
Subjects and method: We studied two eyes having a BRAO, with an interval between the onset of symptoms and the beginning of treatment of >16 weeks (longstanding cases), and in three eyes with an interval of <16 weeks (fresh cases). The visual functions of the eyes were assessed by the best-corrected visual acuity (BCVA), multifocal electroretinograms (mfERGs), and automated static perimetry with the Humphrey field analyzer (HFA). The mfERGs were recorded before and 1 month after the TES, and perimetry with the HFA was done before and at 1 and 3 months after the TES. The amplitudes and implicit times of the N1, P1, and N2 components of the mfERGs were analyzed.
Results: TES did not alter the BCVA significantly in all eyes, but it led to a significant increase in the amplitude of the N2 wave of the mfERGs (P < 0.01). The amplitude of the N1-P1 was also increased but not significantly. The implicit times of N1 (P < 0.01) and P1 (P < 0.05) were significantly shorter than that before the TES. The mean deviation of the HFA was increased after the TES but only in the longstanding cases.
Conclusion: Our results indicate that TES improves the visual function in eyes with BRAO, mainly in longstanding cases.

Keywords: BRAO, TES, multifocal electroretinogram (mERG), automated static visual field


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