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ORIGINAL ARTICLE
Year : 2022  |  Volume : 12  |  Issue : 3  |  Page : 317-324

Binocular therapy as primary intervention in adults with anisometropic amblyopia


1 Department of Paediatric Ophthalmology and Strabismus, Sankara Eye Hospital, Bengaluru, Karnataka, India
2 Sankara Eye Hospital, Bengaluru, Karnataka, India
3 Department of Pediatric Ophthalmology and Strabismus, Sankara Eye Hospital, Bengaluru, Karnataka, India
4 Principal, Sankara College of Optometry, Bengaluru, Karnataka, India

Correspondence Address:
Dr. Kaushik Murali
Sankara Eye Hospital, Varthur Main Road, Kundalahalli Gate, Bengaluru - 560 037, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/tjo.tjo_37_21

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PURPOSE: Refractive correction and patching is the timetested mainstay of treatment for anisometropic amblyopia within the critical period of visual development. Binocular therapies using dichoptic training which overcome suppression by balancing the contrast between two eyes has been increasingly gaining ground. We evaluated the efficacy of dichoptic training in the adult population with anisometropic amblyopia. This study aims to evaluate the effectiveness of dichopticbased active vision therapy, using “VisuoPrime” software as primary intervention, in adults with anisometropic amblyopes. MATERIALS AND METHODS: A prospective interventional study in adults (18–40 years) with anisometropic amblyopia was conducted from August 2019 to March 2020. METHODS: Twentynine subjects with anisometropic amblyopia played binocular games through “VisuoPrime” software 30 min daily for 6 weeks. Bestcorrected visual acuity (BCVA) and binocularity was assessed at 1 and 3 months. Student's paired ttest, Wilcoxon signedrank sum test and MannWhitney tests were used. Statistical package of SPSS version 20.0 was used for analysis, considering P < 0.05 as statistically significant. RESULTS: BCVA of the amblyopic eye improved from 0.60 ± 0.40 logMAR to 0.45 ± 0.29 logMAR and 0.38 ± 0.23 logMAR at 1 and 3 months, respectively (P = 0.0001). Near acuity improved from 0.21 ± 0.14 to 0.14 ± 0.08 logMAR and 0.1 ± 0.04 logMAR at 1 and 3 months respectively (P < 0.0001). Improvement in stereopsis was observed in 24% of subjects which maintained at 3 month followup. CONCLUSION: Dichopticbased active vision therapy using “VisuoPrime” software was effective as a primary modality in adults with anisometropic amblyopia.


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