One of the methods of treating strabismus is through surgery, but before deciding on an operative procedure, a detailed examination with pupil dilation is needed to determine the angle of eye deviation with and without correction, the actual diopter, and whether the child has low vision. If a diopter difference is found between the correction the child wears and the wide pupil, it is first necessary to strengthen the glasses, cover the eye that sees better, then do a follow-up after a few months. If the strabismus angle is corrected by glasses, then we talk about accommodative strabismus. In that case, surgery is not necessary, because only the angle of eye deviation that is not corrected by glasses is corrected surgically. If after several months the angle remains the same or is not corrected enough, it is necessary to plan an operative procedure.