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Authors
Susan A Cotter, Pediatric Eye Disease Investigator Group; Allison R Edwards, David K Wallace, Roy W Beck, Robert W Arnold, William F Astle, Carmen N Barnhardt, Eileen E Birch, Sean P Donahue, Donald F Everett, Joost Felius, Jonathan M Holmes, Raymond T Kraker, Michele Melia, Michael X Repka, Nicholas A Sala, David I Silbert, Katherine K Weise

Treatment of anisometropic amblyopia in children with refractive correction

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Abstract/Introduction

Objective: To evaluate the effectiveness of refractive correction alone for the treatment of untreated anisometropic amblyopia in children 3 to <7 years old.

 

Design: Prospective, multicenter, noncomparative intervention.

 

Participants: Eighty-four children 3 to <7 years old with untreated anisometropic amblyopia ranging from 20/40 to 20/250.

 

Methods: Optimal refractive correction was provided, and visual acuity (VA) was measured with the new spectacle correction at baseline and at 5-week intervals until VA stabilized or amblyopia resolved.

Main outcome measures: Maximum improvement in best-corrected VA in the amblyopic eye and proportion of children whose amblyopia resolved (interocular difference of < or =1 line) with refractive correction alone.


Conclusion/Results

Results: Amblyopia improved with optical correction by > or =2 lines in 77% of the patients and resolved in 27%. Improvement took up to 30 weeks for stabilization criteria to be met. After stabilization, additional improvement occurred with spectacles alone in 21 of 34 patients observed in a control group of a subsequent randomized trial, with amblyopia resolving in 6. Treatment outcome was not related to age, but was related to better baseline VA and lesser amounts of anisometropia.

Conclusion: Refractive correction alone improves VA in many cases and results in resolution of amblyopia in at least one third of 3- to <7-year-old children with untreated anisometropic amblyopia. Although most cases of resolution occur with moderate (20/40-20/100) amblyopia, the average 3-line improvement in VA resulting from treatment with spectacles may lessen the burden of subsequent amblyopia therapy for those with denser levels of amblyopia.


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