Abstract
Purpose
To evaluate the binocular and accommodative function in children wearing dual focus (DF) MiSight® contact lenses (CLs) for myopia control compared with children wearing single-vision (SV) spectacles.
Methods
This was a randomized, controlled clinical trial involving subjects aged 8 to 12, with myopia ranging from − 0.75 to − 4.00D and astigmatism < 1.00D, allocated to MiSight® study CLs group or control group wearing SV. Binocular and accommodative function was determined at baseline, 12-, and 24-month visits, assessed by the following sequence of tests: distance and near horizontal phoria, accommodative convergence/accommodation (AC/A) ratio, stereopsis, accommodative amplitude (AA), and accommodative response (AR) at 33, 25 and 20 cm.
Results
Seventy-four children completed the study: 41 in the CL group and 33 in the SV group. CLs group did not show any significant differences in binocular and accommodative measurements throughout the study. In control group, distance and near phoria, stereopsis, AC/A and AR at 20 cm did not show any significant change, but AA, AR at 33 cm and AR at 25 cm were greater at 24-month visit compared with baseline (p < 0.05).
Conclusions
DF lenses do not change the binocular and accommodative function in children wearing dual focus CLs.
Trial registration
NCT01917110
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Acknowledgments
The authors would like to thank Peter Bonney for proofreading the article.
Funding
CooperVision S.L. Spain provided financial support. CooperVision S.L. provided the study contact lenses and the funding to carry out the clinical trial. The sponsor had no role in the design or conduct of this research.
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The authors declare that they have no conflict of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (CEI-R, Regional Research Ethics Committee of the Community of Madrid, Spain) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Ruiz-Pomeda, A., Pérez-Sánchez, B., Cañadas, P. et al. Binocular and accommodative function in the controlled randomized clinical trial MiSight® Assessment Study Spain (MASS). Graefes Arch Clin Exp Ophthalmol 257, 207–215 (2019). https://doi.org/10.1007/s00417-018-4115-5
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DOI: https://doi.org/10.1007/s00417-018-4115-5