Light disturbance analysis in the controlled randomized clinical trial MiSight® Assessment Study Spain (MASS)

•Dual Focus (DF) contact lenses induce statistically significant changes in light disturbance perception.•Dual Focus contact lenses increase the monocular light disturbance perception compared with a single vision spectacle correction.•Light Disturbance Index (LDI) parameter is about 30% higher in the DF contact lens group than in the Single vision (SV).•The light disturbance perception created by DF lenses decrease over the time and present a significant binocular attenuation effect. To evaluate the perception of light disturbances (LD) in children wearing Dual Focus (DF) MiSight® contact lenses (CLs) for myopia control compared with children wearing single vision spectacles (SV). This was a randomized, controlled clinical trial involving subjects aged 8–12 with myopia of -0.75 to -4.00D and astigmatism