Hemianopsia Complete

Complete hemianopia is the loss of vision in one half of the visual field or the entire right or left visual field. The disease occurs due to damage to the optic nerves, visual cortex, and so on.

With complete hemianosia, vision is preserved in some areas of the field, which have their centers in opposite fields located higher along the visual pathways. In such cases, with contralateral fixation, the center of clear vision is preserved in the field of vision, although the field is partially lost. Hemianospation can be absolute or relative. In absolute cases, the field of vision completely disappears, the patient does not see part of the opposite half or the entire half of the space associated with the eye, which is in a state of hemianopia. If parts of the visual field are preserved, then we are talking about partial hemianiopid.

Hemianopia can be unilateral due to loss of function of one half of the brain, which may be associated with brain injuries, vascular disorders, damage to the optic lobes, and disturbances in the functioning of the nerve pathways conducting ocular impulses. When the anomaly occurs, various parts may be affected. It is also possible to have neuritis of one of the visual parts of the brain. It is also worth considering that the causes of the syndrome are different. Autoimmune diseases of the nervous system are often the culprits. It is possible to identify the disease by analyzing the symptoms, the results of the examination and hardware tests.

The main symptoms of complete hemiaoepid are absent in most cases, since the damage to the fields on both sides predominates not completely, but partially. Symptoms fully develop only in the presence of functional and organic lesions. This happens when the innervation of the eye is disrupted due to various pathologies in the central nervous system. Such symptoms appear and disappear suddenly after attacks of the disease. Patients with complete lesions have some complaints of severe weakness after a short nap in the morning. They also complain of fatigue and a feeling of a foreign body in the eye. Some patients experience pain, a “veil”, “grid” before the eyes or a narrowing of the field of vision, a decrease or loss of visual acuity, complete loss of the visual field, a deterioration in the ability to distinguish colors, and problems with vision in bright light. The causes of complete hemiapsia are diseases caused by impaired blood flow in the ophthalmic artery of the brain, which are also the causes of partial forms of hemiapsia.