Nystagmus diagonal nystagmus. Nystagmus in infants is very easily aroused even during sleep as a result of strong or prolonged arousal. In newborns, the nystagmoid reflex is necessarily present, since the indicative movements of the head are performed due to the vestibulo-ocular reflex. Excitation of the vestibular and ocular apparatus is caused by congenital or pathological movements of the head arising from diseases of the hearing organs. In some cases, nystagmus is preceded by a temporary closure of the eyeball and some delay in their movements. There are different types of diagonal nystagmus depending on their severity and frequency. Most often, nystagus are horizontal in nature; with unilateral defects they can be vertical, and with bilateral defects they can be almost diagonal. Nystagnum of the spinning type is also observed (some kind of analogue of neurological rotation). This chaotic rotation of the gaze around its axis or in one direction can be complex and fluctuate between slower and faster movements. Diagonal nystagims appear in young children in cases of organic damage to various parts of the vestibular and visual systems; the diagnosis is usually made as an additional diagnosis for ICH or tumor. Nystagmus is characterized by a relationship with body position, pupillary response, lacrimation and sensitivity to movement. 1. Horizontal vestibular nystagmic reflex (vertical nystags). Caused by pathologies or injuries in the central nervous system, it begins in newborns due to perinatal lesions of varying severity, diseases and vascular defects of the brain or cerebellum. My interlocutor happened to observe this “fight” of two parts of the brain in the nine-month-old son of a patient who died in childbirth. During a conversation, he focused his vision more often on the left than on the right, which gave the impression of a vertical nistarga. When the head of the family sat on the left, the child involuntarily moved opposite. The boy tried to follow the movement, knocked his forehead on the table several times, but after several minutes of unsuccessful attempts he simply could not maintain his balance and fell to the right, as if tired. 2. Latera