• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Instrument capable of grading eyes with severe visual loss: Estimation of visual function utilizing a novel device called the Low Vision Evaluator

Research Project

Project/Area Number 13671815
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Ophthalmology
Research InstitutionTohoku University

Principal Investigator

NAKAGAWA Yoichi  School of Medicine, Associate Professor, 大学院・医学系研究科, 助教授 (10282063)

Co-Investigator(Kenkyū-buntansha) SATO Hajime  University Hospital, Research Associate, 医学部附属病院, 助手 (10312571)
WADA Yuko  University Hospital, Research Associate, 医学部附属病院, 助手 (70302130)
TAMAI Makoto  School of Medicine, Professor, 大学院・医学系研究科, 教授 (90004720)
ITABASHI Toshitaka  University Hospital, Staff Physician, 医学部附属病院, 医員
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2001: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsLow vision / Visual function / Retinitis pogmentosa / Claucoma / Diabetic retinopathy / 加齢黄斑変性
Research Abstract

The purpose of this study is to develop an instrument capable of measuring and quantifying the visual capabilities of patients with severe yisual loss. The LoVE (Low Vision Evaluator) was made up of a pair of goggles with white, light-emitting diode as a stimulus, a control box, an on―off button to signal the detection of a stimulus, and a printer for permanent records. There were 15 levels of stimuli (combination of 5 intensitics and 3durations). The stimuli were delivered in a random sequence with an audio signal. Each eye was tested separately.
The LoVE was capable of grading the visual function of retinitis pigmentosa (RP) patients with hand movement (HM) and light perception (LP) vision into finer steps. The Snellen visual acuity and visual field size (Steradian) were significantly correlated with LoVE score in RP patients. There were high correlations between the LoVE score and residual peripheral visual field in glaucoma eyes categorized as Vb Kozaki's classification. The LoVE thresholds of proliferative diabetic retinopathy (PDR) patients, whose fundi could not be observed due to vitreous hemorrhage and whose visual acuity was LP or HM, were determined. The LoVH thresholds of patients with a retinal detachment ware significantly lower than that of patients with no retinal detachment. The correlation between the LoVE thresholds and the amplitude of a- and b-waves of the ERG was significant. The LoVE is capable of grading the visual function of PDR patients with conventional LP and HM vision into finer steps, and it can be used to assess the visual function of patients with vitreous hemorrhage.
The testing procedures were simple for the patients and examiner, and this instrument can be used to assess the effectiveness of medical and surgical therapy in patients with severe visual loss.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 國方彦志, 中川 陽一, 角田雅宏, 玉井信: "重度低視力者の視機能評価とその測定機器Low Vision Evaluatorの開発"日本眼科学会雑誌. 105・3. 161-166 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 川村后幸, 和田裕子, 板橋俊隆, 中川陽一, 玉井信: "網膜色素変性の患者における日常生活の難易度とLow Vision Evaluator(LoVE)スコアの関係"厚生省特定疾患 網膜脈絡膜・視神経萎縮症調査研究班平成12年度研究報告書. 232-234 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 板橋俊隆, 中川陽一, 和田裕子, 佐藤肇, 川村后幸, 玉井信: "LoVE(Low Vision Evaluator)による網膜色素変性治療薬(ヘレニエン)の評価"厚生省特定疾患網膜脈絡膜・視神経萎縮症調査研究班平成12年度研究報告書. 239-242 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中川陽一, 板橋俊隆, 和田裕子, 佐藤肇, 川村后幸, 吉岡由貴, 舘花裕子, 玉井信: "時間固定型Low Vision Evaluator(LoVE)による網膜色素変性患者の視機能評価"厚生省特定疾患網膜脈絡膜・視神経萎縮症調査研究班平成12年度研究報告書. 243-246 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 秋山博, 中川陽一, 高橋佳奈, 和田裕子, 玉井信: "Low Vision Evaluator(LoVE)による周辺部残存視野の評価"臨床眼科. 56・8. 1377-1381 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kunikala H, Nakagawa Y, et al: "Grading of Light Perception and Hand Movement Utilizing a Novel Device Called the Low Vision Evaluator"Nippon Ganka Gakkai Zasshi. (J Jpn Ophthalmol Society). 105(3). 161-6 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Akiyama H, Nakagawa Y, et al: "Evaluation of residual peripheral visual field using a Low Vision Evaluator"Rinsho Ganka (Jpn J Clin Ophthalmol). 56(8). 1377-81 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kawamura M, Wada Y, Itabashi T, Nakagawa Y, et al.: "Relationship between Difficulty in Daily Activities and Score of Low Vision Evaluator (LoVE) in Patients with Retinitis Pigmentosa"Annual report of the Chorioretinal / Optic Atrophy Research Committee, the Ministry of Health, Labor and Welfare of Japan. 232-4 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Itabashi T, Nakagawa Y, et al.: "Assessmeni of Helcnienc for Retinitis Pigmentosa Using Low Vision Evalualor (LoVE)"Annual report of the Chorioretinal / Optic Atrophy Research Committee, the Ministry of Health, Labor and Welfare of Japan. 239-42 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Nakagawa Y, et al.: "Evaluation of Visual Function in Retinitis Pigmentosa Patients Using Duration-Fixed Type LoVE (Low Vision Evaluator)"Annual report of the Chorioretinal / Optic Atrophy Research Committee, the Ministry of Health, Labor and Welfare of Japan. 243-246 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 秋山博, 中川陽一, 高橋佳奈, 和田裕子, 玉井信: "Low Vision Evaluator(LoVE)による周辺部残存視野の評価"臨床眼科. 56・8. 1377-1381 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 高橋佳奈, 中川陽一, 桑原創一郎, 布施昇男, 秋山博, 中澤徹, 玉井信: "欠損が中心視野に及んだ末期緑内障患者の色光を用いたLow Vision Evaluatorによる視機能評価"臨床眼科. 57(掲載号未定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 板橋俊隆, 國方彦志, 中川陽一, 和田裕子, 佐藤肇, 川村后幸, 西郷陽子, 太田五月, 遠藤五月, 玉井信: "LoVEを用いた小児の視機能評価"厚生労働省特定疾患 網膜脈絡膜・視神経萎縮症調査研究班 平成14年度報告書. (印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 國方彦志, 中川 陽, 角田雅宏, 玉井信: "重度低視力者の視機能評価とその測定機器Low Vision Evaluatorの開発"日本眼科学会雑誌. 105・3. 161-166 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 秋山博, 中川陽, 高橋佳奈, 和田裕子, 玉井信: "Low Vision Evaluator (LoVE)による周辺部残存視野の評価"臨床眼科. 56・掲載号(未定、印刷中). (2002)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi