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Influence of myopic deformation of the optic disc on glaucoma

Research Project

Project/Area Number 17K11417
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ophthalmology
Research InstitutionAkita University

Principal Investigator

Sawada Yu  秋田大学, 医学部附属病院, 講師 (30419238)

Co-Investigator(Kenkyū-buntansha) 吉冨 健志  福岡国際医療福祉大学, 医学系研究科, 教授 (60191623)
Project Period (FY) 2017-04-01 – 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 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords緑内障 / 近視 / 視神経乳頭 / OCT / 篩状板 / 篩状板欠損 / 近視眼緑内障 / 耳側篩状板欠損 / 傍中心暗点 / 光干渉断層計 / 眼科学
Outline of Final Research Achievements

Glaucoma is a disease that the ganglion cell axons are damaged at lamina cribrosa, which is a structure located deep inside of the optic nerve head. Myopia is a condition that causes deformation of the optic nerve head. The glaucomatous and myopic deformation both occur at the optic nerve head; therefore, they should influence each other. In the series of present research, we observed lamina cribrosa in myopic eyes by using optical coherence tomography. We found multiple focal defects in the lamina cribrosa, and displacement of the optic nerve head tissue that was supposed to co-locate with the underlining structure. We hypothesized that these myopic deformation of the optic nerve head might become weakness when glaucoma develops in the eye. Based on this, we demonstrated significant association between these myopic deformations of the optic nerve head and early onset or sever glaucomatous visual field defect in the myopic eyes with glaucoma.

Academic Significance and Societal Importance of the Research Achievements

以前より、近視は緑内障の発症や進行の危険因子と言われていましたが、実際にどのようなメカニズムでそれに関わっているのか、明らかではありませんでした。今回の私たちの一連の研究で、近視は、それによって引き起こされる視神経乳頭とその深部にある篩状板の変形によって、緑内障に対する弱さを作り出していることが明らかになりました。
近年、社会のIT化などにより、近視人口は非常な勢いで増えており、将来、近視で緑内障になる人も増加することが考えられます。近視の人がなぜ緑内障になりやすいのか、そのメカニズムを明らかしたことは、近視眼における緑内障の発症予防や進行の抑制のために重要であると考えます。

Report

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

    (18 results)

All 2020 2019 2018 2017

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (11 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Book (1 results)

  • [Journal Article] Clinical assessment of scleral canal area in glaucoma using spectral domain optical coherence tomography2020

    • Author(s)
      Yu Sawada, Makoto Araie, Hitomi Shibata, Katsuyuki Murata, Makoto Ishikawa, Takeshi Yoshitomi, and Takeshi Iwase
    • Journal Title

      American Journal of Ophthalmology

      Volume: - Pages: 28-36

    • DOI

      10.1016/j.ajo.2020.03.043

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Difference of the retinal nerve fiber layer thickness assessed on the disc center and Bruch’s membrane opening center in myopic eyes2019

    • Author(s)
      Yu Sawada, Makoto Araie, Hitomi Shibata, Makoto Ishikawa, Toyoto Iwata, Takeshi Yoshitomi
    • Journal Title

      Ophthalmology Glaucoma

      Volume: 2 Pages: 145-155

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Difference of the Retinal Nerve Fiber Layer Thickness Assessed on the Disc Center and Bruch’s Membrane Opening Center in Myopic Eyes2019

    • Author(s)
      Sawada Y, Araie M, Shibata H, Ishikawa M, Iwata T, Yoshitomi T.
    • Journal Title

      Ophthalmology Glaucoma

      Volume: 2 Issue: 3 Pages: 145-155

    • DOI

      10.1016/j.ogla.2019.02.008

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Focal Lamina Cribrosa Defect in Myopic Eyes With Nonprogressive Glaucomatous Visual Field Defect2018

    • Author(s)
      Sawada Yu、Araie Makoto、Kasuga Hitomi、Ishikawa Makoto、Iwata Toyoto、Murata Katsuyuki、Yoshitomi Takeshi
    • Journal Title

      American Journal of Ophthalmology

      Volume: 190 Pages: 34-49

    • DOI

      10.1016/j.ajo.2018.03.018

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optic Disc Margin Anatomic Features in Myopic Eyes with Glaucoma with Spectral-Domain OCT.2018

    • Author(s)
      Sawada Y, Araie M, Shibata H, Ishikawa M, Iwata T, Yoshitomi T.
    • Journal Title

      Ophthalmology

      Volume: 125 Issue: 12 Pages: 1886-1897

    • DOI

      10.1016/j.ophtha.2018.07.004

    • NAID

      40022067115

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiple temporal lamina cribrosa defects in myopic eyes with glaucoma and their association with visual field defects.2017

    • Author(s)
      Yu Sawada, Makoto Araie, Makoto Ishikawa, Takeshi Yoshitomi
    • Journal Title

      Ophthalmology

      Volume: 124 Issue: 11 Pages: 1600-1611

    • DOI

      10.1016/j.ophtha.2017.04.027

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 教育セミナー 10 OCTでここまでわかる緑内障 視神経乳頭のOCT所見2020

    • Author(s)
      澤田 有
    • Organizer
      日本眼科学会 2020
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 近視眼における視神経乳頭中心とブルフ膜開口部中心で測定した網膜神経線維層厚の比較2019

    • Author(s)
      澤田 有、柴田 瞳、石川 誠、吉冨健志、新家 眞
    • Organizer
      日本眼科学会 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 緑内障眼における視神経乳頭前部強膜輪の拡大2019

    • Author(s)
      澤田 有、柴田 瞳、石川 誠、岩瀬 剛、吉冨 健志、新家 眞
    • Organizer
      日本臨床眼科学会 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] Focal lamina cribrosa defect and glaucomatous visual field defect2019

    • Author(s)
      Sawada Y
    • Organizer
      world glaucoma congress 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Optic disc margin anatomy in myopic subjects with glaucoma with Spectral domain optical coherence tomography2018

    • Author(s)
      Sawada Y, Araie M, Shibata H, Ishikawa M, Yoshitomi T
    • Organizer
      American Academy of Ophthalmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Focal lamina cribrosa defect in myopic eyes with non-progressive glaucomatous visual field defect2018

    • Author(s)
      Sawada Y, Shibata H, Ishikawa M, Yoshitomi T
    • Organizer
      International Visual Field and Imaging
    • Related Report
      2018 Research-status Report
  • [Presentation] 非進行性視野障害を呈する近視眼緑内障における篩状板欠損2018

    • Author(s)
      澤田有、春日瞳、石川誠、吉冨健志
    • Organizer
      第122回日本眼科学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Focal lamina cribrosa defect in myopic eyes with non-progressive glaucomatous visual field defect2018

    • Author(s)
      Yu Sawada, Hitomi Shibata, Makoto Ishikawa, Takeshi Yoshitomi
    • Organizer
      23th international visual field and imaging symposium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 異なる形態を持つ緑内障性視神経乳頭における篩状板変形2017

    • Author(s)
      澤田有
    • Organizer
      第28回日本緑内障学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 近視性視神経乳頭構造変化が緑内障性視野障害に与える影響2017

    • Author(s)
      澤田有
    • Organizer
      第71回日本臨床眼科学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 近視眼緑内障における視神経乳頭耳側縁の篩状板欠損2017

    • Author(s)
      澤田有、春日瞳、石川誠、吉冨健志
    • Organizer
      第103回秋田県集談会
    • Related Report
      2017 Research-status Report
  • [Book] 眼科2019

    • Author(s)
      澤田 有、吉冨 健志
    • Total Pages
      10
    • Publisher
      金原出版株式会社
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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