A pilot randomized clinical trial of intermittent occlusion therapy liquid crystal glasses versus traditional patching for treatment of moderate unilateral amblyopia

Jingyun Wang, Daniel E. Neely, Jay Galli, Joshua Schliesser, April Graves, Tina G. Damarjian, Jessica Kovarik, James Bowsher, Heather A. Smith, Dana Donaldson, Kathryn M. Haider, Gavin J. Roberts, Derek T. Sprunger, David A. Plager

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Purpose To compare the effectiveness of intermittent occlusion therapy (IO therapy) using liquid crystal glasses and continuous occlusion therapy using traditional adhesive patches for treating amblyopia. Methods Children 3-8 years of age with previously untreated, moderate, unilateral amblyopia (visual acuity of 20/40 to 20/100 in the amblyopic eye) were enrolled in this randomized controlled trial. Amblyopia was associated with strabismus, anisometropia, or both. All subjects had worn any optimal refractive correction for at least 12 weeks without improvement. Subjects were randomized into two treatment groups: a 4-hour IO therapy group with liquid crystal glasses (Amblyz), set at 30-second opaque/transparent intervals (occluded 50% of wear time), and a 2-hour continuous patching group (occluded 100% of wear time). For each patient, visual acuity was measured using ATS-HOTV before and after 12 weeks of treatment. Results Data from 34 patients were available for analysis. Amblyopic eye visual acuity improvement from baseline was 0.15 ± 0.12 logMAR (95% CI, 0.09-0.15) in the IO therapy group (n = 19) and 0.15 ± 0.11 logMAR (95% CI, 0.1-0.15) in the patching group (n = 15). In both groups improvement was significant, but the difference between groups was not (P = 0.73). No adverse effects were reported. Conclusions In this pilot study, IO therapy with liquid crystal glasses is not inferior to adhesive patching and is a promising alternative treatment for children 3-8 years of age with moderate amblyopia.

Original languageEnglish (US)
Pages (from-to)326-331
Number of pages6
JournalJournal of AAPOS
Volume20
Issue number4
DOIs
StatePublished - Aug 1 2016

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Ophthalmology

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    Wang, J., Neely, D. E., Galli, J., Schliesser, J., Graves, A., Damarjian, T. G., Kovarik, J., Bowsher, J., Smith, H. A., Donaldson, D., Haider, K. M., Roberts, G. J., Sprunger, D. T., & Plager, D. A. (2016). A pilot randomized clinical trial of intermittent occlusion therapy liquid crystal glasses versus traditional patching for treatment of moderate unilateral amblyopia. Journal of AAPOS, 20(4), 326-331. https://doi.org/10.1016/j.jaapos.2016.05.014