Eye–Hand Coordination Skills in Children with and without Amblyopia

摘要: Purpose. To investigate whether binocular information provides benefits for programming and guidance of reach-to-grasp movements in normal children these eye–hand coordination skills are impaired with amblyopia abnormal binocularity. Methods. Reach-to-grasp performance the preferred hand versus monocular (dominant or nondominant eye occluded) conditions to different objects (two sizes, three locations, two repetitions) was quantified by using a 3D motion-capture system. The participants were 36 (age, 5–11 years) 11 adults who normally sighted 21 4–8 had strabismus and/or anisometropia. Movement kinematics error rates compared each viewing condition within between subject groups. Results. youngest control subjects used mainly programmed (ballistic) strategy collided more often when only one eye, while older progressively incorporated visual feedback guide their reach and, eventually, grasp, resulting advantages both movement components resembling those adult performance. Amblyopic worst performers under all conditions, even dominant eye. They spent almost twice as long final approach made many (1.5–3 times) errors direction grip positioning than counterparts, impairments being most marked poorest binocularity, regardless severity cause amblyopia. Conclusions. importance vision increases age use online guidance. Restoring binocularity may improve poor action control.