The present invention provides a pharmaceutical composition for treating geographic atrophy accompanying with age related macular degeneration, wherein the pharmaceutical composition comprises 15-keto prostaglandin compound. The 15-keto prostaglandin compound, such as propyl unoprostone, is effective on the treatment of geographic atrophy, and is able to inhibit the dimination of vision caused by the geographic atrophy.本發明提供伴隨老年性黃斑部病變的地圖狀萎縮的處置用的醫藥組成物,該醫藥組成物係含有15-酮基前列腺素化合物。15-酮基前列腺素化合物是,例如異丙基烏諾前列酮是對地圖狀萎縮的處置有效,可抑制起因於地圖狀萎縮的視力的減低。為實驗數據圖,非代表圖。
