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Temporal crescent syndrome presents as a monocular loss of a crescent shape visual field in the temporal and peripheral vision contralateral to the lesion. The etiology for this special monocular visual field defect is due to the distribution and overlap of the nasal and temporal visual fields.
Bitemporal defects are the result of a lesion impacting the central portion of the chiasm, whereas binasal. defects stem from lesions affecting the lateral portions of the chiasm. The temporal retinas are responsible for the nasal visual fields. Nasal VF.
As a general rule, homonymous hemianopic defects localize to the retrochiasmal visual pathway and a monocular defect localizes at or anterior to the chiasm. We report three patients with a monocular hemianopia on automated static perimetry following cerebral stroke.
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 .
Retinal diseases with signs and symptoms overlapping with neurological causes of vision loss include central serous chorioretinopathy, retinal vascular insufficiency, acute macular neuroretinopathy, big blind spot syndrome, paraneoplastic retinopathy, retinal dystrophy, and toxic retinopathy.
For patients with strictly monocular visual field defects, because of the overlapping nature of the visual fields between the two eyes, the visual field test can be repeated with both eyes open. If the repeat testing under binocular conditions shows persistence of the visual field defect with both eyes open this is consistent with a nonorganic ...
1 paź 2017 · As discussed, causes of monocular vision loss can be localized to ocular abnormalities and prechiasmatic neurologic ones. Retinal detachment, occlusion of a retinal artery or vein, and optic neuritis are all important potential causes of acute monocular vision loss.
