Immediate Impact of Acute Visual Acuity Decline on the Gait of Hemiplegic Patients
10.16156/j.1004-7220.2025.02.007
- VernacularTitle:急性视力下降对偏瘫患者步态的即时影响
- Author:
Hongshuai LENG
1
;
Qinghua MENG
;
Luxing ZHOU
;
Nan ZHANG
;
Yijie DENG
Author Information
1. 天津体育学院运动健康学院,天津 301617;天津市运动损伤与康复虚拟仿真实验教学中心,天津 301617
- Publication Type:Journal Article
- Keywords:
hemiplegia;
vision impairment;
vision intervention;
immediate impact;
falls;
gait
- From:
Journal of Medical Biomechanics
2025;40(2):300-306,328
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the immediate impact of acute vision changes in hemiplegic patients on their gait.Methods Thirty visually normal hemiplegic patients were recruited.Plane mirrors(0°),concave lenses(+150°,+450°)were selected to simulate normal vision,moderate myopia,and high myopia scenarios for straight line walking tests.The Qualisys three-dimensional(3D)motion capture system and Kistler 3D force platform were employed to collect kinematic and dynamic parameters of the patients,and the differences in related indicators before and after visual intervention were compared.Results Visual intervention affected the step length,walking speed,and joint angles of hemiplegic patients.Especially after acute vision changes,there was a significant difference in the stride length and ankle joint angles on the patient's affected side.Under high myopia,the step length and step length symmetry were better than those under moderate myopia,but at the expense of gait speed.Visual intervention led to asymmetric trends in step the length symmetry and joint angle symmetry.There were very significant differences in center of pressure(COP)and COP symmetry between normal vision and high myopia.Conclusions Acute vision changes can affect the gait of hemiplegic patients,especially in individuals with high myopia presenting both a notable decrease in walking speed and an increased ankle range of motion,and an increase in walking speed with moderate myopia.Meanwhile,the symmetry of the COP decreases,indicating that acute vision changes lead to a higher risk of falls for patients.Reasonable vision assessment and corresponding intervention measures are expected to improve walking ability and life quality of the patients.
