OCULOMOTOR FUNCTION AND SPECIFIC LEARNING DISABILITIES IN CHILDREN: A NARRATIVE REVIEW OF EVIDENCE, MECHANISMS AND CLINICAL IMPLICATIONS

Background: Specific learning disorders (SLDs), notably developmental dyslexia, affect a considerable proportion of children. Reading relies on correct saccades, steady binocular fixation, vergence, and accommodation. Whether oculomotor dysfunction causes, correlates with, or results from poor reading has been disputed for four decades.
Objective: To synthesize research on oculomotor dysfunction and learning difficulties, outline suggested causes, and rate the evidence for evaluation and intervention.
Methods: Narrative review utilizing PubMed/MEDLINE, Scopus and Google Scholar, with citation tracking, reported according to the SANRA criteria. 
Results: Several controlled studies report more frequent saccadic, vergence, fixation and accommodative abnormalities in children with dyslexia than in typical readers, and a 2026 meta-analysis confirmed binocular and oculomotor differences, although certainty was low to very low. In one clinic-based cohort, 79% of children with dyslexia compared to 33% of normal readers showed at least one visual function deficiency. Evidence in attention-deficit/hyperactivity disorder (ADHD) and developmental coordination disorder is suggestive but less precise; evidence in dyscalculia and dysgraphia is poor. Causality is unresolved: magnocellular, cerebellar, and visual-attention explanations suggest key involvement, although aberrant eye movements also occur from decoding problems. In children with symptomatic convergence insufficiency, randomized data show that therapy improves binocular function but not reading skills. 
Conclusions: Oculomotor: Dysfunction is a common, observable correlate of learning difficulties, but current data support neither a single causative role nor oculomotor therapy as a treatment for reading difficulty. Children with learning difficulties should undergo a visual function evaluation to prevent overlooking curable binocular disorders, with evidence-based educational intervention.