Nystagmus Dissociated

Dissociated nystagmus (nis + tacum dis + socius, dissociated flickering trembling) is usually called a deviation from the norm or a distorted disorder caused by uneven movement of the eyeballs or other disturbances in the functioning of the vestibular and/or visual-motor apparatus as a whole. Because of these disorders, patients do not always have sufficient intelligibility and concentration. This condition, in which there is a noticeable removal of one eye from the axis of the body and deformation of the movements of the eyelids, sometimes looks very strange and unusual. At the same time, there is no double vision when viewing a stationary object, and the head does not sway. This type of pathology is relatively common. Among preschoolers - in 15-20% of boys, but much less often diagnosed in adults. It manifests itself as a congenital deformation of the eyeball (albinis), as an acquired defect due to tumors, uveitis, hysterical seizures and after unsuccessful ophthalmological operations.

N.d. consists in the occurrence of a seemingly chaotic eye movement with a predominance on one side of the facial region. A similar disease of a neuropsychogenic nature may occur in menopausal patients. The etiology of the disease is unknown, because it is caused by a violation of the coordinated work of the eye muscles with bilateral damage. There are bilateral and unilateral nystagmus. In the first case, one eye is tilted to the side (i.e., the rotation of the eyeballs is noticeable), in the second, on the same side, both eyeballs make coordinated movements. The development is caused by a pathology of the nerve of the eye muscles, which is responsible for the abduction of the eye, or the problem may be in the brain - the ascending oculomotor tract of the spinal cord. However, in children this pathology occurs due to insufficient development of the cerebellum. Therefore, correction should be carried out gradually and under the constant supervision of a specialist so that the development of the nervous system is balanced and harmonious. ND is characterized by irregular eye movements, while alternation of stages of nystagmus of the opposite nature is never observed; in addition, the patient is able to write and read without problems. ND helps to identify neurosis of the optic nerves and brain, provides guidelines for making a diagnosis and recognizing complaints. For diagnosis, a number of additional procedures are prescribed: MRI of the brain and/or EEG (electroencephalogram). Treatment should be comprehensive and individual when selecting medications. If necessary, surgical intervention is indicated to remove the tumor, wash, or replace the cornea.