Occipital lobe syndrome

An overview of the visual occipital cortex centers, and occipital lesions occurred not only visually impaired, there is also memory defects and perceived barriers to movement and other symptoms, but the visual symptoms. Cause pathogenesis one. Craniocerebral trauma : extremely easy pillow contusion after injury can occur in cortical blindness, Visibility quadrant limitations injury Blind. 2. Cerebrovascular disease : hemispheric dominance of middle cerebral artery occlusion parietooccipital support, in the contralateral lesions appeared Gerstmann's syndrome. 3. Tumor : the occipital glioblastomas from the posterior occipital, posterior temporal cortex to the subcortical white matter, violations of internal capsule hind legs when there hemianopsia. A clinical performance. Visual hallucination : occipital lesions, as the central lesions, and the cause hallucinations, such as flash, portraits, interoperable with visual deformation appear at the same time. 2. Visual field defect : the small side of the occipital lesions damages caused with the sexual heminopia central dark spot. Side of the occipital cerebral vascular diseases caused with the sexual hemianopsia. 3. Visual understanding of obstacles : Patients can not use visual recognition language; Fail to understand common items; Space, and the face was not aware; objects and material relationship between the azimuth and distance difference not clear. 4. Eye movement disorders : occipital lesions may occur Balint visual paralysis, the patient monitor to right, not a rapid transfer of sight left. 5. Memory Disorder : visual image deletion, patients can carry out normal reasoning, repeat things much experience, but not in recent memory. even fictitious. 6. Campaign perceived obstacles : in patients with moving objects, only to see objects with the sequence of objects, speed experience was incomplete, Campaign experienced underestimated the time, fail to see the object movement. Differential diagnosis (1) occipital lobe tumors (occipital lobe tumor) occipital lobe tumors often implicating top Leaves and posterior temporal lobe. Early lesions over only defect of vision, color vision impaired or lost. Mainly contralateral to the same quadrant Blind Blind or vision and contralateral appeared premature simple visual and auditory hallucinations, visual deformation. The disease often appears visual seizures, hallucinations were the constant comparison, the number of lesions in the contralateral vision area, Seizure frequency gradually increase, as the number of seizures increased, heminopia, aphasia, agnosia, such as positioning symptoms appeared one after another. Visual environment has nothing to do with the attack. (2) of internal carotid artery occlusion (arteria carotis interma oblilerat ion) from the contralateral hemianopsia and upper and lower extremity paralysis, migraine own sensory dysfunction, three partial levy. Sometimes quadrant of the Blind Blind performance, in particular for the next 1 / 4 Blind. There eye-cone beam cross-paralysis, lesion side of a sexual black eyes and kept there optic atrophy and contralateral hemiplegia-emerging disease characteristics, Meanwhile accompanied Mydriasis or reduced. (3) posterior cerebral artery occlusion (occlusion of a posterior cerebral rtery) from the arterial occlusive poultry have heminopia, such heminopia to complete or incomplete. the latter mostly on 1 / 4-quadrant Blind. Can be accompanied by naming aphasia and missing time with. Cerebral artery occlusion, with the performance of both sexual and macular heminopia avoid the phenomenon. Often two and a sexual black eyes, in the fog flu. Blind Side after long pale nipple can be seen. (4) Schilder's Disease (Schilder's disease) often in child morbidity. Ocular symptoms decreased visual acuity, with the sexual heminopia, or cortical blindness. Generally, there is no change fundus. When the lesions as the beam and the optic chiasm department, as there will be the first pale and unresponsive to light. In addition, the disease often mental retardation, sports system and sensory system damage symptoms. (5) Multiple Sclerosis (multiple sclerosis) of the patients about half over there retrobulbar optic neuritis. Acute education, accompanied by rapid visual impairment, one to 2, there may be blind, can be given to the side, after implicating the other side. Mydriasis, optical reflectance receded, the center dark spot of up to 10 ° to 20 °, peripheral vision is often not changed. These symptoms generally fast, but often relapse.