PROBLEM TO BE SOLVED: To provide a function restoration agent for a retina neurocyte.SOLUTION: This function restoration agent for the retina neurocyte contains, as effective components, one kind, two kinds or more of polypeptides belonging to a family having a sequence of Cys-Gly-Pro-Cys, Cys-Pro-Tyr-Cys, Cys-Pro-His-Cys or Cys-Pro-Pro-Cys, and having thioredoxin activity.COPYRIGHT: (C)2012,JPO&INPIT【課題】網膜神経細胞の機能回復剤を提供すること。【解決手段】Cys-Gly-Pro-Cys、Cys-Pro-Tyr-Cys、Cys-Pro-His-Cys又はCys-Pro-Pro-Cys配列を有し、チオレドキシン活性を有するファミリーに属するポリペプチド類から選ばれる1種又は2種以上を有効成分とする、網膜神経細胞の機能回復剤とする。【選択図】 なし