Wearable Eye Tracking During Bimanual Tasks in Children With Cerebral Palsy

Inclusion Criteria

General Inclusion Criteria

Children aged 6-12 years

• Ability to understand simple instructions required for the study procedures and perform structured visual and bimanual tasks
• For children who routinely wear glasses or contact lenses, ability to view near visual stimuli and task materials with their habitual vision correction
• Written informed consent provided by a parent or legally authorized representative, with the child providing assent after receiving an age- and developmentally appropriate explanation of the study

Cerebral Palsy Group

• Diagnosis of cerebral palsy confirmed by a pediatric physiatrist
• Manual Ability Classification System (MACS) level I-III
• Ability to grasp or manipulate task materials with at least one hand and attempt bimanual task performance

Typically Developing Group

• Typical developmental history based on parent report and confirmation by the research team
• No history of neurological disorders, including cerebral palsy, or musculoskeletal conditions affecting upper-limb function
• No diagnosis of a neurodevelopmental disorder that may affect task performance, such as attention-deficit/hyperactivity disorder, autism spectrum disorder, or intellectual disability

Exclusion Criteria

• Visual impairment that prevents the child from adequately viewing near visual stimuli or task materials, even with habitual vision correction
• Severe strabismus, nystagmus, or another ophthalmologic condition judged likely to substantially compromise stable eye-tracking data collection
• Severe cognitive, communication, or behavioral difficulties that prevent adequate understanding or performance of the study tasks
• Severe upper-limb joint contracture, pain, fracture, or another musculoskeletal condition that prevents safe performance of the bimanual tasks
• Uncontrolled epilepsy, acute illness, unstable medical condition, or any other condition judged to make study participation unsafe