Study to Evaluate the Efficacy of Alleance® (Atropine Sulfate 0.01%) as a Treatment to Delay Myopia and Axial Ocular Elongation in Children.

Inclusion Criteria: * Children aged between 3 to 12 years * Male or female sex. * The parent(s) or legal guardian(s) must voluntarily give their signed informed consent. * From the age of 7 years and older, the subject's willingness to participate in the research study will be expressed in writing. In the case of subjects under 7 years of age, only the signature of the informed consent by the parent(s) or legal guardian(s) will be required, provided that the subject's verbally expressed will is respected. * Ability and willingness to comply with the scheduled visits, treatment plan and other study procedures. * Female subjects, who have already presented their menarche, must have a negative urine pregnancy test at the time of screening. * Female subjects who have already experienced menarche should secure a method of contraception for the duration of the study. Acceptable contraceptive methods include abstinence (defined as abstinence from heterosexual intercourse from study entry until completion) or use of a highly effective contraceptive method, including hormonal contraception, barrier methods or intrauterine device). * Refractive error of spherical equivalent between -0.50 to -6.00 D in each eye, measured by autorefraction and cycloplegic retinoscopy. * Astigmatism less than -1.50 D in each eye, measured by autorefraction and retinoscopy. * Spherical equivalent anisometropia ≤ 1.50 D measured by autorefraction and cycloplegic retinoscopy. * Best corrected visual acuity …