Photoscreening is a photographic method to determine whether a child's eyes focus properly or not. This method can be used from the moment the child is able to fix, which is around six months. Photoscreening allows us to detect a hypoaccommodation and to determine the minimal optical correction to prescribe. It is used to evaluate the postoperative position of the eyes and shows the dominant eye. This eye should be occluded intermittently in order to prevent amblyopia and/or a relapse of the squint.