Author : Kar Ho Siong
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (973 download)
Book Synopsis Relationship Between Vision and Balance in Static and Dynamic Manners by : Kar Ho Siong
Download or read book Relationship Between Vision and Balance in Static and Dynamic Manners written by Kar Ho Siong and published by . This book was released on 2016 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results: Project 1 found that only 16.5% older adults' distance acuity in the better eye was worse than 6/18, which was mainly due to cataract. Compared to the Caucasian normative database, our population had "moderate" fall-risk because of the relatively larger body sway in our balance measurements. Despite the moderately high fall-risk scores, the incidence of one plus falls in the 6-month and 1-year follow-up period was only 9.6% and 17% respectively. Participants with poor distance acuity had poorer quadriceps, slower hand reaction time and poorer balance function, while the relationships were significant. In Project 2, significant main effects of target's moving speed, body locomotion and age were found on visual function. However, impacts of these 3 factors on visual function were independent, without significant interactive effect. Project 3 showed significant age-related decline in vision (static and dynamic) and dynamic balance functions. Similar to Project 1, significant relationship was found between vision and balance functions, however the relationship was stronger when both vision and balance functions were measured in dynamic status. In Project 4, no significant difference in visual (static and dynamic vision) and gait performance (in terms of head angle and required time to complete each walking cycle in the task) was found in SVL and PAL wearing. However, participants wearing the PAL required significantly longer time to stabilize and had larger body sway area (with significantly more sway along the lateral direction) after negotiating one-step down. In Project 5, no significant improvement in vision was found in both control and training groups. For balance measure, significant post-training effect was found in the postural sway along medio-lateral (M-L) and anterio-posterior (A-P) displacements when the participants fixated targets at random position or tracked a moving target. This suggested that action video-game training could potentially improve older adults' balance function in some aspects. Conclusion:Despite relatively lower prevalence of falls in Hong Kong Chinese (~17%), they had moderate fall risk score compared to Caucasian populations. Vision was one of the factors affecting balance function in a positive correlation, in particular the dynamic natures of these measures. Wearing progressive addition spectacles did not result in significant deterioration in gait function, but significantly impaired na© ̄ve wearers' balance performance. Hence, it was important to educate new wearers about this potential fall risk due to the visual disturbance induced by this type of spectacles. The significant association between age-related decline in dynamic visual and balance functions suggested that intervention for improving visual function might also result in improving balance performance. Results from our pilot study provided some preliminary evidence to support this hypothesis, where action video game training might enhance older adults' balance function. A large-scale study was required to confirm the effect of intervention.