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KMID : 1011420140190030407
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Journal of Korean Ophthalmic Optics Society
2014 Volume.19 No. 3 p.407 ~ p.412
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Study on Developing the Equipment of the Time Division System for Rehabilitation in People with Homonymous Hemianopia
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Seo Jae-Myoung
Park Gune-Ho
Heo Min-Young
Jeong Ju-Hyun
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Abstract
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Purpose: It is investigated whether the time division system can extend the field without diplopia for people with
homonymous hemianopia.
Methods: The time division system was manufactured by a modified mini fan and a black cardboard. In order to verify the effectiveness of the equipment, subjects with and without the equipment took part in the experiment to bisect the space and to recognize letters.
Results: Subjects with and without the equipment showed +8.91 and +18.14 degrees in the experiment to bisect the space. In the experiment reading the letters and numbers with the equipment, there were 9 percentage point increase in 4×4 charts and 15 percentage point increase in 6×6 charts. It turned out that there was a remarkable improvement for the worst group for reading the charts.
Conclusions: The time division system is effective in the mobility and orientation for people with homonymous hemianopia.
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KEYWORD
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Homonymous hemianopia, Low vision, Fresnel prism, Time division system
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