The eye trouble of organic origin must be diagnosed and treated before the installation of an irreversible amblyopia. This early diagnosis rests on the observation of the child by his parents but especially on the knowledge of the various clinical signs by the general practitioner or the pediatrist. Thus, the blindness and the behaviors which is referred to it (leucocorie, strabism, nystagmus, or sometimes exophtalmy) must alert the doctor who will then address the child towards the ophthalmologist. This one will be able to highlight a malformation of the anterior segment, a cataract or glaucoma, an ocular inflammation or its after-effects, retinal, orbital or optical ways anomaly. The treatment will have to then allow a fast visual rehabilitation in order to treat the residual amblyopia as fast as possible. In some cases, it will direct the child and his parents towards a structure specialized in order to develop to the maximum of the sometimes unexpected visual capacities.