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  • Title: [Disorders of the afferent visual pathway in HIV infection. 1. Optic nerve and 2. Visual pathways/visual cortex].
    Author: Fabricius EM, Möller AA, Prantl F.
    Journal: Fortschr Ophthalmol; 1991; 88(6):721-30. PubMed ID: 1794796.
    Abstract:
    Up to now little involvement of the afferent visual pathway (optic nerve and optic radiation and visual cortex) in HIV infection has been apparent. These results are based on our prospective investigations of 538 HIV-infected individuals, among them 261 patients with full-blown AIDS carried out by the same examiner over a 6-year period (1984-1990). Diseases of the optic nerve were observed in 22/261 (8.4%) of Aids patients but in only 1/227 (0.4%) of patients with earlier stages of HIV infection. Optic neuritis was the most common disease (in 14/261 = 5.4% of Aids patients), for the most part occurring in the course of CMV (cytomegalovirus) retinitis. For this form the prognosis was primarily good under virustatic therapy with ganciclovir in contrast to primary CMC papillitis. Furthermore, a few cases of optic perineuritis, optic neuropathy in basal meningitis, ischemic optic neuropathy and papilloedema with increased intracranial pressure were observed, most of them caused by opportunistic infections of the central nervous system. In single cases the HIV might hypothetically have played a role in the etiology. Visual impairment of the patients varied from subtle disturbances to blindness. Often optic atrophy resulted. Homonymous hemianopsia was the principal sign in diseases of the visual pathway between the lateral geniculate body and the visual cortex (in 10/261 = 3.8% of Aids patients). This symptom resulted from cerebral toxoplasmosis in 7 cases, progressive multifocal leukoencepalopathy (PML) in 2 cases and primary intracerebral malignant lymphoma in 1 case. The visual fields and neuroradiological findings are demonstrated. In 3 cases the homonymous hemianopsia was the first clinical appearance of Aids. Involvement of the afferent visual pathway in HIV infection may be a cause of blindness or visual disturbances despite normal findings on examination of the eyes themselves.
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