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2021 Fiscal Year Final Research Report

Pathology and treatment for dry age-related macular degeneration using adaptive optics OCT

Research Project

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Project/Area Number 19K09948
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionKyoto University

Principal Investigator

Sotaro Ooto  京都大学, 医学研究科, 講師 (10511850)

Co-Investigator(Kenkyū-buntansha) 池田 華子  京都大学, 医学研究科, 特定准教授 (20372162)
三宅 正裕  京都大学, 医学研究科, 特定講師 (90812793)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords加齢黄斑変性 / 視細胞 / 脈絡膜 / OCT / 補償光学
Outline of Final Research Achievements

We firstly reported cone cell body and Muller cells in normal eyes using adaptive optics OCT. Mean total size and each size of flow voids, which shows spaces among mesh work structures of choriocapillaris, were 0.99 mm2 and 567.8 μm2. They were correlated negatively with age.
Mean cone cell body density 0.5 mm apart from geographic atrophy was significantly reduced in eyes with dry AMD, compared with normal eyes. These results were remarkable in eyes with pseudodrusen. We firstly reported deposits under retinal pigment epithelium using adaptive optics OCT.

Free Research Field

眼科学

Academic Significance and Societal Importance of the Research Achievements

AO-OCTにより、正常眼および萎縮型加齢黄斑変性症例で錐体細胞・ミュラー細胞の細胞体が描出されることを示し、世界で初めて報告した。萎縮型加齢黄斑変性では網膜色素上皮の異常に先行して視細胞細胞体の減少が観察された。以上の結果は萎縮型加齢黄斑変性が視細胞の変性を本態とすることを示唆する。また脈絡膜毛細血管板での密度低下を認め、虚血による視細胞異常が病態に関与していることが明らかとなった。これらの結果は新規の治療開発をすすめる手がかりとなる。

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Published: 2023-01-30  

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