Subject
Child; Female; Humans; Male; Prognosis; Follow-Up Studies; Magnetic Resonance Imaging; Tomography; X-Ray Computed; Evoked Potentials; Disease Specific; Achilles Tendon/pathology/physiopathology; Cerebellar Ataxia/physiopathology/radiography; Cerebellum/abnormalities/radiography; Developmental Disabilities/physiopathology/radiography; Eye Movements; Pigment Epithelium of Eye/pathology/physiopathology; Visual