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Early Detection and Treatment of Glaucoma with the Aid of Optic Disc Measurements with a Computerized Image Analysis

Research Project

Project/Area Number 62440069
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field Ophthalmology
Research InstitutionNiigata University

Principal Investigator

IWATA Kazuo  Niigata University, School of Medicine, Dept. of Ophthalmology, Professor, 医学部, 教授 (10018301)

Co-Investigator(Kenkyū-buntansha) NANBA Katsuhiko  Niigata University, School of Medicine, Dept. of Ophthalmology, Lecturer, 医学部・附属病院, 講師 (80018738)
関 伶子  新潟大学, 医学部附属病院, 助手 (30154644)
Project Period (FY) 1987 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥22,500,000 (Direct Cost: ¥22,500,000)
Fiscal Year 1990: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1988: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥19,000,000 (Direct Cost: ¥19,000,000)
KeywordsOptic disc measurement / Optic disc area / Rim area / Cup area / Cup volume / Cup depth / Cup shape / Large cup / 視野欠損 / 網膜神経線維層の欠損 / 高眼圧症 / 初期緑内障 / 視神経乳頭立体測定 / 正常眼 / 原発開放隅角緑内障(初期) / 視神経乳頭面積 / 視神経乳頭測定 / ONHA / 変動係数 / Rim Area
Research Abstract

Optic disc measurements with a computerized image analysis revealed that optic disc parameters (rim area, cup area, cup volume) are significantly correlated to optic disc area in normal (NL) eyes. Although statistically significant differences were observed among NL, ocular hypertensive (OH) and early glaucomatous (GL) eyes for these parameters, the 95% prediction values of rim area in NL could differentiate only 25.0% of OH and 52.9% of GL from NL. In spite of the wide distribution and large overlap of the values of the parameters among three groups, OH and GL with the optic disc equal > 053.0mm^2 showed no overlap of the values with NL. From these results, larger optic discs seem to be more vulnerable to increased IOPs. Measurements of the depth of optic disc cup showed optic disc cup in OH and GL was significantly deeper than that in NL. Thsese findings may support the idea that the deformation of the lamina cribrosa in early stage of glaucoma could cause optic disc cupping. In four cup shapes classified with a computerized image analysis, the cupーshaped cup was most frequently found in NL, the plateauーshaped cup in OH and the twoーpeakーshaped cup in GL. The optic disc cup may change from coneーshaped to plateauーshaped and twoーpeakーshaped with the progression of glaucoma. The relationship between optic disc parameters and retinal nerve fiber layer defects (NFLD) in GL revealed a significant loss of rim area in the earliest stage of NFLD. The relationship between the parameters and visual field defects indicated that a loss of 0.37mm^2 in rim area, 0.38mm^2 in cup area and 0.16mm^3 in cup volume may precede visual field defects.

Report

(5 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 難波 克彦、関 伶子、岩田 和雄: "コンピュ-タ-画像解析装置(Optic Nerve Head Analyzer)による正常人視神経乳頭陥凹の計測、" 日本眼科学会雑誌. 92. 1889-1985 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 難波 克彦、中山 徹、岩田 和雄: "コンピュ-タ-画像解析による視神経乳頭の立体計測、生理的乳頭陥凹拡大例について" 臨床眼科. 44. 328-329 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 難波 克彦、岩田 和雄: "コンピュ-タ画像解析による視神経乳頭の立体計測、視神経乳頭陥凹の形状について" 日本眼科紀要. 41. 1227-1278 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 難波 克彦: "緑内障早期診断における意義:眼底検査" あたらしい眼科. 8. 237-240 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 難波 克彦、岩田 和雄: "コンピュ-タ-画像解析による視神経乳頭の立体計測 ー正常眼と高眼圧症、原発開放隅角緑内障との差についてー" 日本眼科学会雑誌. 95. 174-183 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Katsuhiko Nanba Kazuo Iwata,Kyoko Nagata: "Relationship between optic disc damage and visual field defects in glaucoma," Ptoceedings of the IXth International Perimetric Society Meeting,1991 Kugler Pubications,Amsterdam.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nanba K, Seki R, Iwata K: "Optic disc measurements by computerized image analysis." Acta Soc Opthalmol Jpn. 92-11. 1889-1895 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nanba K, Iwata K: "Stereoscopic optic disc measurement with computerized image analysisーOptic disc cup profile-" Folia Ophthalmol Jpn. 41-6. 1277-1278 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nanba K, Nakayama T, Iwata K: "Computerized image analysis of physiological large cups" J J Clinical Ophthalnol. 44-3. 328-329 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nanba K: "Optic fundus examination for early diagnosis of glaucoma" Journal of the eye. 8-2. 237-240 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nanba K, Iwata K: "Optic disc measurements with computerized image analysis in normals, ocular hypertensives and glaucomas" Acta Soc Ophthalmol Jpn. 95-2. 174-183 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nanba K, Iwata K, Nagata K: "Relationship between optic disc damage and visual field defects in glaucoma" Proceedings of the IX International Perimetric Society Meeting.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 難波 克彦: "緑内障早期診断における意義:眼底検査" あたらしい眼科. 8. 237-240 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 難波 克彦、岩田 和雄: "コンピュ-タ-画像解析による視神経乳頭の立体計測ー正常眼と高眼圧症、原発開放隅角緑内障との差についてー" 日本眼科学会雑誌. 95. 174-183 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Katsuhiko Nanba,Kazuo Iwata,Kyoko Nagata: "Relationship between optic disc damage and visual field defects in glaucoma," Proceedings of the IXth International Perimetric Society Meeting,1991 Kugler Publications,Amsterdam.

    • Related Report
      1990 Annual Research Report
  • [Publications] 難波克彦: "コンピュ-タ-画像解析による視神経乳頭の立体計測ー生理的乳頭陥凹拡大例について" 臨床眼科.

    • Related Report
      1989 Annual Research Report
  • [Publications] 難波克彦: "コンピュ-タ-画像解析による視神経乳頭の立体計測ー正常眼、高眼圧症、原発開放隅角緑内障の差について" 日本眼科学会雑誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] 難波克彦: "コンピュ-タ-画像解析による視神経乳頭の立体計測ー乳頭陥凹の形状について" 日本眼科学会雑誌.

    • Related Report
      1989 Annual Research Report
  • [Publications] 難波克彦,関伶子,岩田和雄: 日本眼科学会雑誌. 92. 1889-1895 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 難波克彦: 日本眼光学学会会誌. 8. 131-136 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 難波克彦: 日本眼科紀要 投稿予定.

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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