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1992 Fiscal Year Final Research Report Summary

Precise Measurement of Vergence Eye Movement and its Application to Clinical Study

Research Project

Project/Area Number 02454408
Research Category

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

Allocation TypeSingle-year Grants
Research Field Ophthalmology
Research InstitutionKitasato University

Principal Investigator

UKAI Kazuhiko  Kitasato University, School of Medicine, Assistant Professor, 医学部, 講師 (20129232)

Project Period (FY) 1990 – 1992
KeywordsVergence Eye Movement / Near Reflex / Accommodation / Pupil / Binocular Vision
Research Abstract

Few report has published on the simultaneous measurement of human ocular near triad (vergence eye movement, pupil, accommodation). These instruments required to restrict head motion of the subject strictly and limit a visual field of the subject by the equipment. This project aims to investigate a new system which enables a remote measurement of near triad to minimize these limitations. For this purpose image analysis technique was utilized to the infrared TV pictures of the subjects' eyes using small computers. Eye movement can be measured by tracking the corneal reflection of the light source and the pupil area which has brighter luminance than surroundings due to the cat's eye phenomena can be measured by density slicing the image. Accommodative state of the subject's eye can be determined using knife edge optical method. Actually images from two CCD TV cameras are wiped into one image and recorded on the video tape recorder. An image grabber board on the Macintosh computer captures a picture from VTR. This picture was analyzed using NIH Image software. If only vergence eye movements were required to measure, on-line bright position tracker hardware (Hamamatsu Photonics: Video X-Y tracker) was used instead. These system was applicable for ophthalmic clinical use, especially the analysis of abnormality in the near triad in the strabismus patients.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Mezawa M,Ishikawa s,Ukai K: "Changes in waveform of congenital nystagmus associated with bioteedback treatment" British Journal of Ophthalmology. 74. 472-476 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ukai k,Ichihashi y: "Changes in ocular astigmatism over the whole range of accommodation." Optometry and Vision Science. 68. 813-818 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsuchiya k,Aoki s,Ukai K,Ishikawa s: "Residual ettect on sympathetic system by visual display terminal work" Current aspects in ophthalmology. 2. 1713-1716 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 知野 順子,小町 祐子,鵜飼 一彦,石川 哲: "ビデオレフラクション法による両眼調節静特性の測定." 日本眼科臨床医報. 86. 1473-1477 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 岸田 千穂子,大木 千佳,藤山 由紀子,鵜飼 一彦,石川 哲: "遠視眼の裸眼視力:調節性内斜視の有無による違い" 日本斜科臨床医報. 86. 1294-1296 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大木 千佳,香取 順子,伊藤 幸江,土屋 邦彦,鵜飼 一彦,石川 哲: "副交感神経麻痺剤点眼後の交感神経刺激剤の効果" 日本視能訓練士協会誌. 20. 177-181 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鵜飼 一彦: "苧阪,古賀,中溝編:眼球運動の実験心理学第4章調節と輻輳" 名古屋大学出版会, 21 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mezawa M, Ishikawa S and Ukai K: "Changes in waveform of congenital nystagmus associated with biofeedback treatment." British Journal of Ophthalmology. 74. 472-476 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ukai K and Ichihashi Y: "Changes in ocular astigmatism over the whole range of accommodation." Optometry and Vision Science. 68. 813-818 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tsuchiya K, Aoki S, Ukai K and Ishikawa S: "Residual effect on sympathetic system by visual display terminal work." Current Aspects in Ophthalmology. 2. 1713-1716 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kator J, Komachi Y, Ukai K and Ishikawa S: "Measurement of near triads using video refraction method (in Japanese)." Ganka Rinsho Iho. 86. 1473-1477 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kishida K, Ooki C, Fujiyama Y, Ukai K and Ishikawa S: "Visual acuity in hypermetropia with or without accommodative esotropia." Ganka Rinsho Iho. 86. 1294-1296 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ohki C, Katori J, Ito Y, Tshuchiya K, Ukai K and Ishikawa S: "The effect of sympathomimetic drug after parasympathicolytic drug on refraction and accommodation (in Japanese)." Nippon Sinou Kunrenshi Kyoukaishi. 20. 177-181 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ukai K: "Chapt 4. Accommodation and convergence." Osaka, Koga, Nakamizo (eds): Experimental psychology of eye movement, Nogoya University Press. (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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