Effect of a Myopia Control Lens on the Astigmatism in Children

The goal of this clinical trial is to investigate over a one-year period the effect of myopia control spectacle lenses on astigmatism in children aged 6 to 13 years with myopia and astigmatism. The main question it aims to answer is: \- How does the eye respond at each timepoint to the myopia control lenses? By evaluating: the change in astigmatism (cylinder) after one year? Participants will: Wear the assigned study spectacles daily Visit the Essilor R\&D Centre for scheduled follow-up sessions

Inclusion Criteria: * Volunteer participant * Informed consent of parent or guardian and assent of participant * Age equal to or greater than 6 years and less than 13 years (before 13th birthday) at the time of consent. * Refractive error (manifest refraction): * With the rule astigmatism (defined as vertical meridian has steeper curvature, Astigmatism prescribing axis in between: 0 to 34° and 146 to 180°) * Astigmatism should be more than or equal to 1.50D * Least myopic meridian equal or less than -0.50D * Most myopic meridian equal or greater than -5.50D. * Anisometropia should be less than or equal to 1.00D * Best corrected visual acuity: Better than 0.2 logMAR in each eye * Willingness and ability to: * participate in trial for at least 12 months. * attend scheduled visits. * not to be involved in other myopia control treatments concurrently. * No history of any myopia control interventions (i.e., myopia control spectacle lenses, myopia control contact lenses, orthokeratology lenses or atropine, etc.) Exclusion Criteria: * History or presence of: * An ocular disease * Strabismus * Amblyopia