Functional Visual Acuity of treated amblyopia

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  • Kotsuka Junko
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba
  • Hoshi Sujin
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba
  • Hiraoka Takahiro
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba
  • Sato Yumiko
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba
  • Kato Atsuko
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba
  • Fukuda Shinichi
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba
  • Oshika Tetsuro
    Department of Ophthalmology, Faculty of Medicine, University of Tsukuba

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Other Title
  • 実用視力検査による弱視治療眼の視機能の検討

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<p>[Purpose] The best-corrected visual acuity measured by conventional visual testing is useful for judging the efficacy of amblyopia treatment; however, recently, some reports have used other tests to evaluate quality of vision (QOV) of patients with amblyopia. Functional visual acuity (FVA) measurement is a dynamic assessment of visual acuity, which helps evaluate one aspect of QOV. In this study, we performed FVA measurements of both eyes in patients with successfully treated unilateral amblyopia, and compared the results of treated eyes to those of contralateral normal eyes.</p><p>[Subjects and Methods] Sixteen patients (4 boys, 12 girls; age 7.5 ± 2.3 years) with successfully treated unilateral amblyopia were enrolled in the study. FVA, visual maintenance ratio (VMR), standard deviation, maximum and minimum visual acuities, and average response time was recorded in both eyes of the patients using an FVA measurement system. The differences in FVA values were analyzed.</p><p>[Results] The mean LogMAR FVA scores and VMR (p < 0.001) as well as LogMAR maximum and minimum visual acuities (p < 0.005) decreased significantly in treated amblyopic eyes. Standard deviation was significantly higher in treated amblyopic eyes (p < 0.001). There was no significant difference in average response time.</p><p>[Conclusion] Although amblyopic eye was recognized as successfully treated by conventional visual acuity testing, FVA or VMR were worse in treated amblyopic eyes than in contralateral normal eyes. Our data indicate impaired visual function in treated amblyopic eyes.</p>

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