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KMID : 1159320230250030255
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Korean Journal of Vision Science
2023 Volume.25 No. 3 p.255 ~ p.268
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Changes in Physical Stability of Simulated Visual Impairment according to Gaze Distance
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Lee Heui-Yean
Ryu Young-Uk
Chu Byoung-Sun
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Abstract
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Purpose : This study aimed to investigate the effects of viewing distance and different vision conditions on postural stability using a body equilibrium measurement device.
Methods : The total number of participants was 23 (23.92±2.09 years old), and the visual condition for all was 'full correction, blurred condition (visual acuity less than 0.5 logMAR), and within 10 degrees of field of view.' Body stability measurements were conducted using '3D Guidance.'
Results : There was no statistically significant difference in the gaze distance under the condition of full correction (p>0.050). However, under the blurred condition, significant differences were observed in lateral, anterior, and posterior instability depending on the gaze distance (p=0.004, p=0.027), and significant body instability was also observed when the field of view was restricted to within 10 degrees (p<0.050).
Conclusion : Changes in postural stability were evident based on gaze distance, with greater differences were observed between distant and near gaze distances, especially under conditions of blur condition and limited VF.
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KEYWORD
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Body balance, Gaze distance, Low vision
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