Visual Field Deficits - Neuroscience - NCBI Bookshelf
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.
Visual Field Deficits - Brigham and Women's Hospital
Symptoms of a visual field deficit might include bumping into objects on the affected side. Importantly, car accidents may occur because of the decreased peripheral vision. There can be trouble reading, especially when the enlarged blind spot reaches the center of the visual field.
Visual Pathway and Visual Field Defects - Geeky Medics
2020年11月29日 · Visual field defects. At the optic chiasm, fibres from the nasal half of the retina, corresponding to the temporal visual field, decussate. Lesions compressing the chiasm, such as pituitary adenomas, therefore cause bitemporal hemianopia. Lesions to optic radiations result in homonymous contralateral quadrantanopia.
Visual Field Defects. 38. What’s the difference between a . depression. and a . scotoma? A . depression. is an inward shifting of the outer limit of the visual field, whereas a . scotoma. is an area of field loss surrounded on all sides by areas of normal sensitivity.
Visual Field Defects: Causes and Treatment | Doctor - Patient
2021年2月18日 · A visual field defect is a loss of part of the usual field of vision, so it does not include severe visual impairment of either one eye or both. The lesion may be anywhere along the optic pathway; retina to occipital cortex.
Types of Field Defects - The Merck Manuals
Altitudinal field defect. Loss of all or part of the superior or inferior half of the visual field; does not cross the horizontal median. More common: Ischemic optic neuropathy (usually nonarteritic), hemibranch retinal artery occlusion, retinal detachment. Less common: Glaucoma, optic nerve or chiasmal lesion, optic nerve coloboma. Arcuate scotoma
Visual Field Test: What It Is and What the Results Mean - Verywell …
2024年10月30日 · A visual field test is an eye exam that checks for blind spots in your line of vision, It can help determine the cause of vision problems, including glaucoma.
Visual field defect | Causes, Symptoms & Treatment | Britannica
Visual field defect, a blind spot (scotoma) or blind area within the normal field of one or both eyes. In most cases the blind spots or areas are persistent, but in some instances they may be temporary and shifting, as in the scotomata of migraine headache.
Visual pathway deficits | Radiology Reference Article - Radiopaedia.org
2020年12月2日 · Visual pathway or visual field deficits are defects in visual space determined by the location of a lesion in the neurological visual pathway from eye to brain cortex. Understanding of the visual system is paramount 1: Vison abnormalities other than visual field deficits can also help localize lesions 1: 1. Jacobs DA, Galetta SL.
Visual fields in neuro-ophthalmology - PMC - PubMed Central …
Goldman kinetic visual fields are useful for patients with severe visual and neurologic deficits and patients with peripheral visual field defects. Visual fields are useful in monitoring progression or recurrence of disease and guide treatment for conditions such as idiopathic intracranial hypertension (IIH), optic neuropathy from multiple ...