To provide novel effective agents for cataract treatment.SOLUTION: Provided is a cataract inhibitor or therapeutic agent that contains a culture supernatant component obtained by culturing mesenchymal stem cells. Preferably, provided is an inhibitor or therapeutic agent that comprises the culture supernatant component of bone marrow mesenchymal stem cells or adipose tissue-derived mesenchymal stem cells. Preferably, provided is an inhibitor or therapeutic agent that comprises an exosome. Preferably, provided is an inhibitor or therapeutic agent that is an eye drop or an ophthalmic ointment.SELECTED DRAWING: None【課題】白内障治療のための新たな効果的な薬剤の提供。【解決手段】間葉系幹細胞を培養して得られる培養上清成分を含む、白内障の抑制剤または治療剤。好ましくは、骨髄間葉系幹細胞または脂肪組織由来間葉系幹細胞の培養上清成分を含む、抑制剤または治療剤。好ましくは、エキソソームを含む、抑制剤または治療剤。好ましくは、点眼剤または眼軟膏剤である、抑制剤または治療剤。【選択図】なし
