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디지털 방식의 안운동 기록과 측정치의 재현성

Other Titles
 Digitalized Eye Movement Recording and Verification of its Reproducibility 
Authors
 한승한  ;  김홍복  ;  이종복  ;  권오웅  ;  유선국 
Citation
 Journal of the Korean Ophthalmological Society (대한안과학회지), Vol.40(1) : 197-210, 1999 
Journal Title
 Journal of the Korean Ophthalmological Society (대한안과학회지) 
ISSN
 0378-6471 
Issue Date
1999
Keywords
Digital ; Image analysis ; Fast Fourier transformation ; Reproducibility
Abstract
Many diagnostic tools, which record eye movement, are available for diagnosis and treatment of the patients with impaired eye movement. Most of these tools cannot record directly the eye movement but record electrical analog signal developed when eyeball moves through electrode attached on skin or sclera. Because they need a fixation device, they may bring a patient discomfort. It is well known that digital recording device is not interfered by external noise signal and that its reproducibility is acceptable. We have developed a noninvasive, direct, and precise technique for recording eye movement and verified its reproducibility. We video-taped the horizontal and vertical eye movement and processed the captured images digitally using a image analysis program. the result showed the frequency energy of eye movement in the range within 6Hz and at 10 or 11Hz. The eye movement was observed more clearly after filtering the low frequency energy by inverse Fourier transformation. The reproducibility for measurements of total variability were as follows; vertical displacement measurements, 1.21%; horizontal displacement measurements, 0.68%. In conclusion, this new technique is easy and comfortable to examiner and patient. Its reproducibility was acceptable. Thus it may served as a substitute of conventional tools for recording eye movement.
Files in This Item:
T199903185.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Han, Seung Han(한승한) ORCID logo https://orcid.org/0000-0001-8972-4790
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/174306
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