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Change of visual fields after TES. (A, B) Visual fields of Case 2. Change of visual fields in a longstanding case before (A) and one month after (B) TES. The superior visual field defect is decreased. (C, D) Visual fields of Case 3. The change of the visual field in a fresh case before (C) and one month after (D) TES. The visual field defect is unchanged after TES.
Abbreviation: TES, transcorneal electrical stimulation.
