Cross Visual

Cross-visual syndrome is a neuro-visual dysfunction in which one sense organ receives two identical or opposite signals at once. At the same time, a person develops illusions. He sees something that really isn't there. It is observed in hyperthyroidism and brain disorders.

It is difficult to explain the work of the nervous system in simple words: the same hypothala

The optic chiasm are groups of optic nerves that connect two or more hemispheres of the brain and run parallel to each other through different parts of the brain. They provide a wide three-dimensional range of vision and high stereoscopic clarity. When the optic chiasm is damaged, visual problems such as color blindness, amblyopia, aniridia, nystagmus and blindness can occur. In this article we will look at what the optic chiasm are, what are the causes of their damage, what treatment methods exist, and how damage to the optic chiasm can be prevented.

The optic chiasm connects the two sides of the visual field, has the shape of a cross and is located in the occipital lobe of the brain. Crosses are divided into two types: visual and oculomotor. The ocular chiasm connects the right and left eyes. The visual cross connects the right and left hemispheres of the brain, the oculomotor cross crosses the neurons responsible for eye movement. Peresek is present in all representatives of animals with a developed brain. The development of the decussation occurs in the first months after the birth of the human fetus. It is formed in the right hemisphere: the spinopole canal and in the dentate nucleus. After the formation of the first channel, information from the left and right fields is reflected and sent to the inferior gyrus, and then to the superior and middle gyri. The central nervous system records the characteristics of each individual organ in its work. The crosshair also connects with the visual bodies located in the middle valley, located in the columns, as well as the ridge of the middle gyrus. Descending, it passes through the pituitite and passes into the medulla oblongata. The visual intersection forms a circle: the horizontal part is the supranuclear or callosum, the vertical part is the vault of the medullary lobe. Passing through the hypothalamus, the main part of the chiasm contracts, several turns bifurcate and it is projected onto the brain. The main types of damage to the optic chiasm: previous traumatic brain injuries, impaired blood flow, dislocations, stroke, meningitis. Damage is often possible due to strong physical pressure resulting in damage to the vascular openings. Damage occurs as a result of a blow to the skull, concussion, or stroke. Stroke is a common cause of disruption of the decussation and integrity of neural structure. Visual acuity decreases, the threshold increases, and it seems that the patient sees only part of the picture. You can detect a decrease using tests: some letters and numbers are displayed once, others twice, and after a short period of time they overlap each other. Examinations can determine the cause of the injury. These are neurological and temporary factors. The causes are convulsions, seizures, craniofacial displacement, cerebral circulatory disorders, autism, syphilis, multiple sclerosis. In addition, such damage can be caused by age-related factors, accumulated damage caused by prolonged pressure on the back area