Abstract Issue

Volume 13 Issue 12 (December) 2024

Original Articles

Effectiveness of Part Time Occlusion Therapy in Moderate Amblyopia-A Hospital Based Prospective Observational Study in South Kerala
Dr. Niji Valsan, Dr. Naina Jabeen Hyder

Background: Amblyopia is a disorder of visual deprivation or dysfunction of the processing of visual information (1).The optimal treatment for amblyopia depends on the patient’s age at the time of diagnosis, the onset and type of amblyopia, and the degree of compliance attainable. Objectives: To study the demographic characteristics and improvement in visual acuity after part time occlusion treatment and the type of amblyopia with better visual improvement in children aged 5-12 years with moderate amblyopia. Methodology: All children aged 5-12 years with unilateral moderate amblyopia attending outpatient department and Paediatric ophthalmology clinic of a Tertiary eye care hospital in South Kerala who gave consent to participate in the study were included. Detailed history, demographic data were collected. Best corrected visual acuity (BCVA) was measured using Snellen’s chart. Detailed evaluation of strabismus, binocular single vision assessment, cycloplegic refraction using Atropine or Cyclopentolate and posterior segment examination were performed. Appropriate refractive correction was prescribed to amblyopic children 6 weeks prior to enrolment. Part time occlusion of the nonamblyopic eye for two hours per day combined with 1 hour of near activity was prescribed to all patients and followed up two monthly up to 6 months. Results: 50 patients with unilateral moderate amblyopia were studied. Mean age of the study population was 7.7 ± 0.463 years. Females were predominant and accounted for 60% of the study population. Hypermetropia (53%) was the commonest refractive error noted. Strabismus was present in 62% of patients and anisometropia was in 54% patients. 76% patients had binocular single vision at presentation. Mean visual acuity of study population at presentation was 0.343 LogMAR units which has improved to 0.131 LogMAR units by the end of the study. Strabismic amblyopia showed maximum improvement in visual acuity compared to anisometropic amblyopia during study period. Conclusion: Part time occlusion is a viable and effective modality of management of amblyopia in Indian patients. Strabismic amblyopia was the commonest type and responded best to the occlusion therapy.

 
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