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KMID : 0361420110350030427
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Journal of Korean Academy of Rehabilitation Medicine
2011 Volume.35 No. 3 p.427 ~ p.431
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Effect of Dominant Versus Non-dominant Vision in Postural Control
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Park Rae-Young
Kee Hoi-Sung
Kang Jung-Ho
Lee Su-Jin
Yoon Soe-Ra
Jung Kwang-Ik
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Abstract
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Objective: To assess the eff ect of dominant and non-dominant vision in controlling posture in quiet stance.
Method: Twenty-fi ve healthy elderly subjects aged over 60 years old and twenty-fi ve young subjects aged under 30 years old were assessed by computerized dynamic posturography. Postural stability was measured in two conditions; dominant eye open and non-dominant eye open. We used the sensory organization test (SOT) for evaluating sensory impairment. A SOT assessed the subject’s ability to use and integrate somatosensory input, vision, and vestibular cues eff ectively to maintain balance. Th e SOT was conducted 3 times, and the average value of the 3 trials was used for data analysis. Equilibrium scores reflected the subject’s anteroposterior sway. The highest possible score was 100, which indicated that the subject did not sway at all, and a score of 0 indicated a fall from the footplate. Determination of ocular dominance was performed by a hole-in-the card test.
Results: For the twenty-five young subjects in this study, equilibrium score in two conditions did not differ. However, for elderly subjects over 60 years, the equilibrium score in dominant vision was higher than in non-dominant vision (p<0.05).
Conclusion: In young subjects, there were no signifi cant diff erences in postural control between dominant vision and non-dominant vision. However, in elderly subjects, postural control in non-dominant vision was signifi cantly impaired. Th erefore, the evaluation of a dominant eye should be considered in rehabilitation programs for elderly people.
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KEYWORD
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Postural control, Dominant vision, Non dominant vision, Balance, Elderly
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