The Effect of Early Glasses on the Development of Amblyopia

Inclusion Criteria: * Registered at one of the participating CHCs; * 12-18 months of age; * Voluntary approval for participation by the parents or legal representative/guardian with provided written informed consent; * Willingness of the parents/guardian(s) to comply with the study procedures Exclusion Criteria: * Congenital syndromes; * Psychomotor retardation; * Known hereditary defects; * Known cardiac disease; * Severe comorbidity; * Children's whose parents do not agree to cyclopegia with the use of cyclopentolate 1% eye drops for orthoptic examination (retinacopy) by the study orthoptist; * Refractive error higher than the AAPOS criteria twofold (i.e. hyperopia \>7 dioptres, anisometropia \>3 dioptres and astigmatism of \>3 dioptres at 90º or 180º and \>2 dioptres in oblique axis (\>10º eccentric to 90º or 180º); * Strabismus; * Amblyopia; * Ptosis; * Cataract or other media opacity; * Other ophthalmic disease requiring immediate referral;