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The visual pathway consists of structures that carry visual information from the retina to the brain. Lesions in that pathway cause a variety of visual field defects. In the visual system of human eye, the visual information processed by retinal photoreceptor cells travel in the following way:
14 wrz 2022 · Learn components of the visual pathway as well as the types of defects that may result from a lesion along the pathway through this article and the corresponding illustrated cheat sheet. Knowing the patterns of visual deficits can help to diagnose and manage patients.
29 lis 2020 · Destructive lesions of the visual pathway, therefore, result in characteristic visual field defects. As a rule, pre-chiasmal lesions will result in an ipsilateral monocular visual field defect. Post-chiasmal lesions will result in homonymous visual field defects of the contralateral side.
1 wrz 2023 · Conceptualizing the visual pathway in three major sections—optic nerve, chiasm, and retrochiasm—can be helpful in identifying patterns of disease and localization because pathology will vary based on which section of the visual pathway is affected.
19 gru 2022 · The visual system consists of 2 primary parallel pathways: optic and pupillary reflex pathways. [2] [3] Optic Pathway. The optic pathway begins in the retina, a complex structure of 10 layers, each serving a distinct function.
The optic pathway includes the retina, optic nerve, optic chiasm, optic radiations, and occipital cortex (see figure Higher Visual Pathways). Damage along the optic pathway causes a variety of visual field defects.
Visual field deficits resulting from damage at different points along the primary visual pathway. The diagram on the left illustrates the basic organization of the primary visual pathway and indicates the location of various lesions.
