RT Journal Article T1 Binocular and accommodative function in the controlled randomized clinical trial MiSight® Assessment Study Spain (MASS) A1 Ruiz Pomeda, Alicia A1 Pérez Sánchez, Belén A1 Cañadas Suárez, María Del Pilar A1 Prieto Garrido, Francisco Luis A1 Gutiérrez Ortega, Ángel Ramón A1 Villa Collar, César AB 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 PB Springer SN 0721-832X YR 2019 FD 2019-01-28 LK https://hdl.handle.net/20.500.14352/12697 UL https://hdl.handle.net/20.500.14352/12697 LA eng NO Received: 12 June 2018 / Revised: 27 July 2018 / Accepted: 21 August 2018 / Published: 08 September 2018 / Issue Date: 28 January 2019. DS Docta Complutense RD 11 may 2025