Reading and eye-hand coordination in amblyopic children

项目摘要 弱视是儿童单眼视力受损的最常见原因，每2到3个孩子中就有2到3个弱视。 100个孩子。弱视通常是由双眼不协调的输入引起的，这些输入与 视觉发育过程中的斜视或屈光参差。感觉和动眼神经功能障碍是公认的 在弱视文献中，弱视对视觉认知发展的功能后果 而视觉运动系统则鲜为人知。初步研究显示阅读速度慢，精细运动能力差 弱视儿童和成人，即使他们的一只眼睛在双眼观察下具有正常的视力 条件。然而，人们对这些损伤的原因仍知之甚少。斜视和屈光参差 有或没有弱视的4-12岁儿童将被登记并与一组进行比较 正常对照儿童。将在这些儿童群体中开展三个项目。眼球运动在 阅读将使用Eyelink 1000双目眼睛跟踪系统和临时眼手进行评估 将评估视觉引导到达点和视觉引导精确抓取过程中的协调性 使用Eyelink 1000和LEAP Motion捕获设备。这些研究将确定感官 视力缺陷(视力、立体视力、抑制)、眼球运动功能障碍(凝视不稳定、异常 眼跳)，以及手运动的视觉规划和指导方面的缺陷影响阅读、伸展和 弱视儿童在双眼条件下的握力。来自拟议实验的数据将决定 发育过程中异常视觉体验对视觉认知和视觉运动的影响 系统，提供有关成熟过程中感觉和运动整合的信息，并帮助确定更多 有效的弱视治疗和学术住宿，使弱视儿童茁壮成长。

Project Abstract Amblyopia is the most common cause of monocular vision impairment among children, affecting 2 or 3 of every 100 children. Amblyopia commonly results when there is binocularly discordant input associated with strabismus or anisometropia during visual development. Sensory and oculomotor deficits are well-established in the amblyopia literature; yet, the functional consequences of amblyopia on the developing visuocognitive and visuomotor systems are less known. Initial studies show slow reading and poor fine motor ability in amblyopic children and adults, even when they have one eye with normal visual acuity under binocular viewing conditions. Yet, causes of these impairments remain poorly understood. Strabismic and anisometropic children, with or without amblyopia, between the ages of 4-12 years will be enrolled and compared to a group of normal control children. Three projects will be conducted in these groups of children. Eye movements during reading will be evaluated using the EyeLink 1000 binocular eye tracking system, and temporal eye-hand coordination during visually-guided reach-to-point and during visually-guided precision grasp will be evaluated using the EyeLink 1000 and the LEAP Motion capture device. These studies will determine how sensory deficits (visual acuity, stereoacuity, suppression), oculomotor dysfunction (gaze instability, abnormal saccades), and deficits in visual planning and guidance of hand movements affect reading, reaching and grasping in amblyopic children under binocular conditions. Data from the proposed experiments will determine the consequences of abnormal visual experience during development on the visuocognitive and visuomotor systems, provide information on sensory and motor integration during maturation, and aid in determining more effective amblyopia treatments and academic accommodations that allow amblyopic children to thrive.