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Quantitative assessment of photoreceptor damage in eyes with branch retinal vein occlusion

Research Project

Project/Area Number 16K11263
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ophthalmology
Research InstitutionUniversity of Yamanashi

Principal Investigator

IIJIMA Hiroyuki  山梨大学, 大学院総合研究部, 教授 (80114362)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords網膜静脈分枝閉塞症 / 黄斑浮腫 / 視細胞障害 / 光干渉断層計 / 静的自動視野計 / 眼底自発蛍光 / 光干渉血管造影 / 光干渉断層血管撮影 / 光干渉断層計アンギオグラフィー / 臨床
Outline of Final Research Achievements

Visual acuity is reduced by macular edema, photoreceptor damage and ischemia in the inner retinal layer in eyes with branch retinal vein occlusion. Photoreceptor damage can be assessed by disruption of external limiting membrane or ellipsoid zone in the image of optical coherence tomography and by hypofluorescence in the image of fundus autofluorescence. Proper evaluation of these findings will enable quantitative assessment of photoreceptor damage. Although the damage is mostly irreversible it may be reversible in some cases in a longer follow-up period.

Academic Significance and Societal Importance of the Research Achievements

BRVO黄斑浮腫に対して、現在抗VEGF薬による硝子体注射が広く行われているが、その効果は黄斑浮腫の改善であって、視細胞障害や網膜内層虚血による視力障害に対しては効果がない。そのような病態理解は、高価な抗VEGF薬治療の適応判断に役立つとともに、漫然と効果のみられないまま繰り返される治療の終息判断に利用できる。視細胞障害の可逆性に関してはその機序の今後の解明への研究のモチベーションになる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (13 results)

All 2019 2018 2017 2016

All Journal Article (8 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] 黄斑萎縮の病態と検査2019

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 61 Pages: 1363-1366

    • Related Report
      2019 Annual Research Report
  • [Journal Article] 黄斑浮腫遷延化と注射抵抗性の原因は何か?2019

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 61 Pages: 179-183

    • Related Report
      2019 Annual Research Report
  • [Journal Article] 網膜静脈閉塞症の疑問(疑問15) 抗VEGF剤による視力改善がBRVO>CRVO>糖尿病黄斑浮腫であるのは何故か?2018

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 60 Pages: 1605-1608

    • NAID

      40021765408

    • Related Report
      2018 Research-status Report
  • [Journal Article] 網膜静脈閉塞症の疑問(疑問12) 抗VEGF剤の再注射,追加注射はどのように決めるべきか?2018

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 60 Pages: 633-637

    • NAID

      40021605890

    • Related Report
      2018 Research-status Report
  • [Journal Article] Reduced light sensitivity due to impaired retinal perfusion in branch retinal vein occlusion2018

    • Author(s)
      Iijima, H.
    • Journal Title

      Jpn J Ophthalmol

      Volume: 62 Issue: 2 Pages: 151-157

    • DOI

      10.1007/s10384-017-0546-5

    • NAID

      210000169743

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] 網膜静脈閉塞症の疑問 2.RVO眼の黄斑浮腫以外の視力低下要因2016

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 58 Pages: 1073-1076

    • NAID

      40020986021

    • Related Report
      2016 Research-status Report
  • [Journal Article] 網膜静脈閉塞症の疑問 1.黄斑浮腫があるとどうして視力が低下するのか?2016

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 58 Pages: 859-862

    • NAID

      40020944242

    • Related Report
      2016 Research-status Report
  • [Journal Article] 網膜静脈閉塞症の疑問 疑問3.黄斑浮腫ではどうして視細胞が障害されるのか?2016

    • Author(s)
      飯島裕幸
    • Journal Title

      眼科

      Volume: 58 Pages: 1591-1595

    • Related Report
      2016 Research-status Report
  • [Presentation] BRVOの疑問2019

    • Author(s)
      飯島裕幸
    • Organizer
      第25回和歌山眼科フォーラム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] BRVO黄斑浮腫の視力低下機序と治療戦略2018

    • Author(s)
      飯島裕幸
    • Organizer
      日本眼循環学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 実臨床におけるBRVO黄斑浮腫に対する抗VEGF剤治療2018

    • Author(s)
      飯島裕幸
    • Organizer
      日本臨床眼科学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 網膜動脈閉塞を合併する網膜中心静脈閉塞症の光干渉断層計所見2017

    • Author(s)
      飯島裕幸
    • Organizer
      日本眼循環学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Optical coherence tomographic characteristics of central retinal vein occlusion simulating combined occlusion of central retinal artery and central retinal vein2017

    • Author(s)
      Hiroyuki Iijima
    • Organizer
      SOE 2017 (European society of ophthalmology)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2016-04-21   Modified: 2021-02-19  

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