July 2019
Volume 60, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2019
Contribution of monocular patching of the amblyopic eye prior to dichoptic movie viewing for the treatment of amblyopia beyond the critical period
Author Affiliations & Notes
  • Lauren Sauvan
    CNRS - Aix-Marseille Université, Marseille, France
  • Natacha Stolowy
    CNRS - Aix-Marseille Université, Marseille, France
  • Danièle Denis
    CHU NORD Marseille, France
  • Frédéric Matonti
    CHU NORD Marseille, France
    Centre Paradis Monticelli, France
  • Frédéric Chavane
    CNRS - Aix-Marseille Université, Marseille, France
  • Robert Hess
    McGill University, Quebec, Canada
  • Alexandre Reynaud
    McGill University, Quebec, Canada
  • Footnotes
    Commercial Relationships   Lauren Sauvan, None; Natacha Stolowy, None; Danièle Denis, None; Frédéric Matonti, None; Frédéric Chavane, None; Robert Hess, McGill University (P); Alexandre Reynaud, McGill University (P)
  • Footnotes
    Support  This work was supported by a grant from the Agence Régionale de la Santé to LS, a grant from the Fondation de France – Berthe Fouassier to NS, grants from the Canadian Institutes of Health Research (228103) and 460 ERA-NET NEURON (JTC 2015) to RFH and by a FRQS Vision Health Research Network of Quebec networking grant to RFH, FC and AR.
Investigative Ophthalmology & Visual Science July 2019, Vol.60, 217. doi:
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      Lauren Sauvan, Natacha Stolowy, Danièle Denis, Frédéric Matonti, Frédéric Chavane, Robert Hess, Alexandre Reynaud; Contribution of monocular patching of the amblyopic eye prior to dichoptic movie viewing for the treatment of amblyopia beyond the critical period. Invest. Ophthalmol. Vis. Sci. 2019;60(9):217.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Dichoptic movie viewing significantly improves visual acuity in amblyopia in children. Furthermore, short-term occlusion of the amblyopic eye transiently increases its contribution to binocular fusion. In this study, we first asked whether dichoptic movie viewing could improve the visual function of amblyopic subjects beyond the critical period. Then, we tested if this effect could be enhanced by short-term monocular pathing of the amblyopic eye.

Methods : 17 subjects presenting fixed functional amblyopia participated in this study. They followed 6 training sessions of 1.5 hour of dichoptic movie viewing. Seven of them had to wear an occluding patch over the amblyopic eye for two hours prior to each of these sessions. Best-corrected visual acuity, monocular contrast sensitivity, interocular balance and stereoacuity were measured before and after the training.

Results : For the non-patched group, mean amblyopic eye visual acuity significantly improved from 0.54 to 0.46 logMAR(p<0.05). For the patched group, mean amblyopic eye visual acuity significantly improved from 0.62 to 0.43 logMAR(p<0.05). Improvements were also observed for the other visual functions tested, however they were not significant.

Conclusions : Our training method shows promising results and could be used as a treatment of fixed amblyopia in adults. These results were obtained in only six sessions over a 2-week period of training and they encourage us to push on for further investigations.

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.

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