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[Pathological visual field and brain tumor]
Abstract:
The general relationships between an operatively or autoptically localized tumor and the visual field determined by means of ikineticer perimetry are investigated, the patient stock being a total of 1756 neurosurgical brain-tumor inpatients. Examination of the visual field was possible with four fifths of the brain-tumor patients. Hemianopic, quadrantanopsic, or scotomatous defects of a topically localizable nature could be found in almost one third of the total patient stock available for examination. The clinically particularly interesting criteria of localization of homonymous-hemianopsia defects such as macular sparing and incongruence/congruence of visual field changes should be of no importance to the localization within the visual pathway of brain-tumor patients.
Insights
Brain tumors can cause visual field defects like hemianopia. Macular sparing and incongruence are not reliable indicators for localizing these visual pathway defects in brain tumor patients.
Area of Science:
- Neuro-ophthalmology
- Neurosurgery
- Clinical neurology
Context:
- Investigating the relationship between brain tumors and visual field deficits.
- Utilizing kinetic perimetry for visual field assessment.
- Analyzing data from 1756 neurosurgical brain tumor inpatients.
Purpose:
- To determine the correlation between tumor location and visual field abnormalities.
- To assess the diagnostic value of specific visual field characteristics for tumor localization.
- To evaluate the prevalence of visual field defects in brain tumor patients.
Summary:
- Visual field examinations were feasible in 80% of the 1756 neurosurgical brain tumor patients.
- Topically localizable visual field defects (hemianopic, quadrantanopsic, scotomatous) were identified in nearly one-third of the examined patients.
- Key criteria for localizing homonymous hemianopia, such as macular sparing and congruence/incongruence of visual field changes, were found to be insignificant for pinpointing tumor location within the visual pathway.
Impact:
- Provides insights into the neuro-ophthalmological manifestations of brain tumors.
- Highlights the limitations of certain visual field criteria in neurosurgical tumor localization.
- Informs clinical practice regarding the interpretation of visual field defects in the context of brain tumors.