PROBLEM TO BE SOLVED: To provide an inhibitor of a complement pathway for treating eye diseases.SOLUTION: Provided is a complement inhibitor to be used for treatment of age-related macular degeneration (AMD), diabetic retinopathy, eyeball angioplasty (eyeball neovascularization, etc. affecting tissues of the choroidea, cornea or retinae), and clinical conditions or diseases related to the eye, such as other eyeball conditions responsible for the activation of the complement. The AMD treatment is available for dry type AMD and exudative type AMD as well. The complement inhibitor includes, though not limited to the following, an inhibitor inhibiting a second complement pathway of D factor, properdin, B factor, Ba factor, Bb factor, etc. and a classical complement pathways of C3a, C5, C5a, C5b, C6, C7, C8, C9, C5b-9, etc.COPYRIGHT: (C)2013,JPO&INPIT【課題】眼疾患を処置するための補体経路の阻害剤を提供すること。【解決手段】本発明は、加齢性黄斑変性症(AMD)、糖尿病性網膜症、眼球血管形成(脈絡膜、角膜、又は網膜の組織に影響を与える眼球血管新生等)、及び補体活性化に関与する他の眼球病態等の眼に関連する病態又は疾患を治療する補体阻害剤に関する。AMDの治療は、乾性及び滲性の両型のAMDを含む。本発明の補体阻害剤には、D因子、プロペルジン、B因子、Ba因子、及びBb因子等の第二補体経路、並びにC3a、C5、C5a、C5b、C6、C7、C8、C9、及びC5b-9等の古典的補体経路を阻害する阻害剤が含まれるが、これらに限定されない。【選択図】なし