在视觉指导的接触过程中,眼睛和手的协调在单眼剥夺双眼视障碍的儿童身上
Krista R Kelly1, Mina Nouradanesh2, Reed M Jost3
1School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada.
Vision research
|October 3, 2025
概括
患有单眼缺失 (MD) 双眼视的儿童在视觉引导的伸手过程中表现出受损的眼手协调. 这种缺陷在视力敏度较差的人群中更为明显,影响了运动性能.
科学领域:
- 眼科医生 眼科 眼科
- 神经科学是一个神经科学.
- 发育儿科 发育儿科
背景情况:
- 单眼剥夺 (MD) 视,通常是由婴儿白内障引起的,导致感觉和运动缺陷.
- 之前的研究表明,在患有MD的儿童中,精细运动能力下降.
- 眼手协调对于运动性能至关重要,并且可能会受到视力障碍的影响.
研究的目的:
- 为了评估MD amblyopia的儿童在视觉引导达到任务时的眼手协调.
- 为了比较MD双眼视的儿童和年龄相似的对照者之间的动和触动动力学.
- 为了确定与MD双眼视障碍组中眼手协调受损相关的因素.
主要方法:
- 17名患有MD眼的儿童 (7-15岁) 和41名对照参与了这项研究.
- 在视觉引导的伸手任务中记录了伸手运动和眼睛运动.
- 分析了萨卡德和雷奇的动力学测量,并在各组之间进行了比较.
主要成果:
- 患有MD的双眼视群体表现出受损的萨卡德动力学 (例如,增益较低,精度降低) 和触及动力学 (例如,持续时间较长,峰值速度较慢).
- 在MD双眼视群中观察到更多的与伸展相关的松动.
- 在MD双眼视群中,较差的视敏结果与较差的眼手协调性能相关.
结论:
- 双眼障碍 (MD) 显著影响到伸手过程中眼手协调的发展.
- 线上控制的损害和潜在的无法调整补偿策略可能是观察到的赤字的基础.
- 视力敏度结果是影响MD眼症眼手协调障碍严重程度的关键因素.
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