Scotoma (Blind Spot in Vision): Types, Causes & Treatment
网页The types may reflect where the blind spot occurs, like a central scotoma, and some may refer to a color that you see, like a xanthic scotoma. There are also positive and negative scotomas. With a positive scotoma, you’ll see something, like a spot of a particular color.
Different Types of Scotoma: Symptoms & Causes - Vision Center
网页2024年2月21日 · A central scotoma is a blind spot directly in your line of sight. This type causes visual field defects that make daily tasks seem challenging or impossible. People with a central scotoma may look from the …
Toxic Optic Neuropathy - EyeWiki
网页Toxic optic neuropathy is characterized by bilateral, usually symmetric vision loss, papillomacular bundle damage, central or cecocentral scotoma, and reduced color vision. This disease is often underdiagnosed or often diagnosed at a stage when recovery of vision is not possible.
Cecocentral Scotoma: A Neuro-Ophthalmic Revisionist Approach
网页Purpose: Although homonymous hemianopsia, bitemporal, and arcuate visual field defects are by far the most common, the most classic visual field defect in neuro-ophthalmology has been the central scotoma. Literature from the mid-20th century emphasized the unique nature of cecocentral scotomas seen in patients with toxic and nutritional pathology.
Neuro-ophthalmology Illustrated Chapter 3 – Visual Fields
网页2018年12月19日 · Optic neuropathies typically produce nerve fiber bundle defects within the central 30 degrees of the visual field. Depending on the etiology of the optic neuropathy, arcuate defects, altitudinal defects, and central, paracentral, or centrocecal scotomas are observed ( Fig. 3.14, Fig. 3.15, Fig. 3.16). Chiasm
网页scotoma? A central scotoma involves only fixation, whereas… a ceco-central scotoma involves fixation and extends all the way to the blind spot.
What can visual electrophysiology tell about possible visual-field ...
网页2021年7月16日 · If scotoma includes both the central region and the physiologic blind spot, it is described as centrocecal scotoma and might be associated with many types of optic neuropathies .
Cecocentral scotomas: Causes, symptoms, and treatment options
网页2023年2月3日 · Cecocentral scotomas are a type of visual field defect that can result from damage to the optic nerve or certain areas of the brain. These scotomas are characterized by a blind spot in the center of the visual field, which can significantly impact a person's ability to see and perform everyday tasks.
Nutritional Optic Neuropathy - EyeWiki
网页Symptoms of nutritional optic neuropathy are subacute and progressive, and include bilateral, symmetrical visual impairment; painless visual loss, centrocecal scotoma that can be unilateral or bilateral, dyschromatopsia and loss of contrast sensitivity.
Centrocecal scotoma (Concept Id: C0271196) - National Center for ...
网页A scotoma (area of diminished vision within the visual field) located between the central point of fixation and the blind spot with a roughly horizontal oval shape.
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