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ORIGINAL ARTICLE
Year : 2015  |  Volume : 31  |  Issue : 4  |  Page : 250-253

The study of convergence insufficiency in children with attention deficit hyperactivity disorder


1 Department of Ophthalmology, Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
2 Unit of Phoniatrics, Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt

Correspondence Address:
Rania M Abdou
Unit of Phoniatrics, Otorhinolaryngology Department, Faculty of Medicine, Alexandria University, Alexandria
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1012-5574.168361

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Introduction Attention deficit-hyperactivity disorder (ADHD) is characterized by low levels of attention and concentration and high levels of activity, distractibility, and impulsivity. Convergence insufficiency (CI) is a common condition that is characterized by a patient's inability to maintain proper binocular eye alignment on objects as they approach from distance to near. Several studies have been conducted to discover the relationship between ADHD and CI. Researchers reported that children with CI had a higher frequency of parent-reported ADHD and/or learning problems, but their studies were limited to patients with CI. Aim of the work The purpose of this study was to identify patients with CI in a cohort of patients diagnosed with ADHD. Materials and methods The study included 20 children diagnosed with ADHD. They were diagnosed on the basis of the clinical assessment and fulfilling the diagnostic criteria of the DSM-IV. Other assessments included mental age assessment using the Stanford-Binet scale and ADHD assessment using Conners' parents rating scale. Participants underwent complete ophthalmologic examination: visual acuity test using an illiterate E chart; stereopsis using Lang card; cover tests; convergence amplitude; near point of convergence; slit-lamp examination for the anterior segment; cycloplegic refraction; and fundus examination. Written informed consent was taken from the parents of all children included in the study. Results CI was present in 35% of cases, with a near point of convergence more than 6. Conclusion CI appeared to be a comorbid disorder in patients with ADHD, and may cause misdiagnosis, or exacerbation of the symptoms of ADHD. Patients diagnosed with ADHD should be evaluated for CI. It is worthy of mention that CI is a disease that can be effectively managed with orthoptic exercises, or surgically.


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