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KMID : 1011420230280030263
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Journal of Korean Ophthalmic Optics Society
2023 Volume.28 No. 3 p.263 ~ p.273
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Effects of Visual Stimuli and Vision Conditions on Postural Stability
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Lee Heui-Yean
Park Inn-Jee
Chu Byoung-Sun
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Abstract
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Purpose : This study investigated the impact of visual cues and visual conditions on body stability using a body balance measurement device.
Methods : The study was conducted on 23 healthy individuals with a mean age of 23.92±2.09 years. There were three visual conditions: “full correction”, “blur condition (visual acuity of less than 0.5 logMAR)”, and “visual field (VF) defect to simulate of 10 degrees of VF.” Body posture stability were evaluated using the 3D Guidance system which can collect data from different location of body (3D Guidance trakSTAR™, Northern Digital Inc., Waterloo, Canada).
Results : When looking at distance, significant lateral body sway was observed based on forehead measurements in the “full correction” (p=0.026) and blur condition(p<0.050). With 10 degrees of VF, significant changes were observed in all measurements (p<0.050). When looking near, blur condition caused significantly more body sway than blur condition (p<0.050).
Conclusions : The result showed that significant posture sway were induced when restricting the VF which is related to safety issue. Therefore, this study highlighted the necessity for further related research in the future.
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KEYWORD
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Low vision, Body stability, Visual stimulation
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