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KMID : 1011420200250030299
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Journal of Korean Ophthalmic Optics Society
2020 Volume.25 No. 3 p.299 ~ p.306
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Changes in the Gait Pattern Depending on Induced Refractive Errors and Correlation Analysis of Visual Functions
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Choi Jae-Hyeok
Cho Hyun-Gug
Moon Byeong-Yeon
Yu Dong-Sik
Kim Sang-Yeob
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Abstract
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Purpose: To investigate changes in the gait pattern caused by induced refractive errors and analyze the correlation with visual function factors.
Methods: We enrolled 40 healthy subjects with an average age of 22.23±1.99 years. To induce binocular myopia and hyperopia, S ±1.00, ±2.00, and ±3.00 D were used. The gait pattern depending on each induced refractive error was measured on a treadmill at a speed of 4 km/h using OptoGait. After each repeated test at each level of refractive error, the values measured in the full corrected condition were compared to those measured. In addition, the correlation between the gait pattern and visual function elements was analyzed.
Results: The step length shortened and cadence increased significantly from induced myopia by +1.00 D and induced hyperopia by -1.00 D compared to the full corrected condition. In hyperopia, the visual function factor that is most relevant to gait pattern changes was analyzed as the reduced accommodative amplitude.
Conclusions: Regardless of the refractive error type, the uncorrected refractive error was a visual state that temporarily interfered with the optimal gait pattern.
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KEYWORD
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Refractive errors, Gait patterns, Step length, Cadence, OptoGait
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