PROBLEM TO BE SOLVED: To provide a pharmaceutical agent capable of treating or preventing a retinal disease caused by retinal pigment epithelial disorder.SOLUTION: According to the present invention, there is provided a pharmaceutical preparation for the prevention or treatment of retinal disease caused by impairment of RPE. The pharmaceutical formulation comprises a pharmaceutical agent having a protective effect against sodium iodate-induced retinal pigment epithelium (RPE) cell death.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】網膜色素上皮障害を原因とする網膜疾患を治療または予防しうる薬剤を探索すること。【解決手段】本発明は、ヨウ素酸ナトリウム誘発網膜色素上皮(RPE)細胞死に対する保護効果を有する薬剤を含有する、RPEの障害を原因とする網膜疾患の予防または治療のための医薬製剤を提供する。【選択図】なし