| Project/Area Number |
04557075
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Ophthalmology
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| Research Institution | TOKYO MEDICAL & DENTAL UNIVERSITY |
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Principal Investigator |
TOKORO Takashi SCHOOL OF MEDICINE,TOKYO MED.& DENT.UNIV., PROFESSOR, 医学部, 教授 (20013865)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAZAKI Sei SCHOOL OF MEDICINE,TOKYO MED.& DENT.UNIV., ASSISTANT PROFESSOR, 医学部, 助手 (10251521)
KAWASAKI Tutomu SCHOOL OF MEDICINE,TOKYO MED.& DENT.UNIV., ASSISTANT PROFESSOR, 医学部, 助手 (30204712)
OKUYAMA Fumio SCHOOL OF MEDICINE,TOKYO MED.& DENT.UNIV., ASSISTANT PROFESSOR, 医学部, 助手 (70134690)
OHZU Hitoshi SCHOOL OF SCIENCE AND ENGINEERING,WASEDA UNIV., PROFESSOR, 理工学部, 教授 (10063520)
上川床 総一郎 東京医科歯科大学, 医学部, 専攻生 (20224660)
百野 伊恵 東京医科歯科大学, 医学部, 専攻生 (70218866)
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| Project Period (FY) |
1992 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥13,500,000 (Direct Cost: ¥13,500,000)
Fiscal Year 1994: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1993: ¥9,500,000 (Direct Cost: ¥9,500,000)
Fiscal Year 1992: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | KINETIC VISUAL ACUITY / DYNAMIC VISUAL ACUITY / VISUAL ACUITY / ACCOMMODATION / VERGENCE |
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| Research Abstract |
We developed the apparatus for measuring kinetic visual acuity (KVA) , dynamic visual acuity (DVA) and visual acuity with short exposure time.
The features are as follows :
(1) The target velocity is variable in wide range from static up to 100km/h, in two direction forward and backward, horizontal. We can set in 7 stage of velocity in above range.
(2) The target presented position are 70m-4m in forward and +-2.0 degrees in horizontal.
(3) The exposure time is variable in 7 stages from 1/1000sec to 1sec.
(4) The four target sizes are available, target colors can be selected from white, red, green, blue and yellow, background illuminance is in 0.1 to 200cd/m2.
Further, We checked this apparatus performance and confirmed the performances.
In addition, We measured the kinetic visual acuity for subjects. The results are : the kinetic visual acuity decreased slowly with increasing target velocity up to 100Km/h. The KVA also depends on background illuminance of target. From these, the developed apparatus is considered to be useful in solving ocular fatigue and traffic ophthalmology.
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