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Disorders of Visual Cortex
Cortical visual impairment

Presentation

The clinical presentation and assessment of visual cortical dysfunction is reviewed, along with a discussion of classic visual cortical neurobehavioral syndromes; a case presentation is included. [tandfonline.com]

Cortical visual impairment Presently, cortical visual impairment (CVI) is the most common cause of permanent visual impairment in children (1-3). [childrenshospital.org]

After presentation, the test card was removed and the patient was asked to fixate on the grey background and to describe the duration and colour of any after-images. Each colour was presented three times at each presentation duration. [jnnp.bmj.com]

Neurologic

  • Focal Neurological Deficit

    Ten year consistency in neurological test performance on children without focal neurological deficit. Dev. Med. [frontiersin.org]

Treatment

However, the success of restorative treatments also depends on the way in which different visual maps in the occipital lobe communicate with each other. [york.ac.uk]

High-dose treatment with glucocorticoids Corresponding treatment in the case of multiple sclerosis Prognosis Visual improvement usually starts after 2 weeks. [amboss.com]

Standard Therapies Treatment The lack of knowledge on the basic biology of the visual snow syndrome has caused a general deficiency of effective treatment strategies for most patients. [rarediseases.org]

Prognosis

Further prognosis depends on the potential existence of an underlying disease. Multiple sclerosis is the most common cause of optic neuritis. [amboss.com]

This… BACKGROUND/AIMS To evaluate prevalence, aetiology, prognosis, and associated neurological and ophthalmological problems in… Fifteen children (most of whom were neurologically multiply disabled) with severe, chronic sleep disorders were treated with [semanticscholar.org]

Prognosis: The course of the illness results in poor prognosis. Visual loss is generally permanent; partial visual recovery can be achieved by steroid therapy [ 3 ]. [intechopen.com]

Chronic cortical visual impairment in children: aetiology, prognosis, and associated neurological deficits. Br J Ophthalmol 1999;83(6):670-5. Afshari MA, Afshari NA, Fulton AB. Cortical visual impairment in infants and children. [childrenshospital.org]

Especially found in the elderly, they all have an unfavorable prognosis. The kinetics of tumor growth is superior than that of low-grade gliomas, provoking fast-evolving neurological deficiencies. [em-consulte.com]

Etiology

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. [icd10coded.com]

Optic atrophy Anterior ischemic optic neuropathy (AION) Definition: segmental or generalized infarction of the anterior part of the optic nerve Etiology Nonarteritic form due to atherosclerosis (NAION) Arteritic form due to giant cell arteritis (AAION [amboss.com]

In addition, various pathologies that recognize inflammatory, vascular, neoplastic or toxic, metabolic etiology may induce other unnecessary visual system dysfunctions associated with changes in visual perception such as diplopia (paralytic strabisms) [fondazionebietti.it]

However, as Vaivre-Douret et al. (2016) emphasize, the etiology of DCD appears confused on account of the umbrella term of motor dysfunction. [frontiersin.org]

The broadband and pulse type of snowy vision have distinctly separate underlying causes (etiologies) and will be discussed separately. [neuronresearch.net]

Epidemiology

Epidemiology and world-wide impact of visual impairment in children. En:Lambert S, Lyons C, editores. Taylor and Hoyt's Pediatric Ophtalmology and Strabismus. 5th ed. London:Elsevier;2016. 1060. [ Links ] 2. [scielo.org.mx]

Learn about the impacts that child poverty has on the developing brain with data from the fields of psychology, neuroscience, and public health epidemiology. [brainfacts.org]

Optic atrophy Anterior ischemic optic neuropathy (AION) Definition: segmental or generalized infarction of the anterior part of the optic nerve Etiology Nonarteritic form due to atherosclerosis (NAION) Arteritic form due to giant cell arteritis (AAION) Epidemiology [amboss.com]

An update on progress and the changing epidemiology of causes of childhood blindness worldwide. J. AAPOS 16, 501–507. doi: 10.1016/j.jaapos.2012.09.004 CrossRef Full Text | Google Scholar Langevin, L. M., Macmaster, F. [frontiersin.org]

Pathophysiology

[…] intracranial pressure Damage in the region of the optic chiasm Etiology Most commonly: compression by pituitary adenoma (prolactinoma), craniopharyngioma, meningioma, aneurysms of the internal carotid artery Demyelination, multiple sclerosis Trauma Pathophysiology [amboss.com]

Disorders of the chiasm Evaluation and management OPTIC TRACT Anatomy Signs and symptoms Disorders of the optic tract LATERAL GENICULATE NUCLEUS OPTIC RADIATIONS Parietal lobe signs and symptoms Temporal lobe signs and symptoms OCCIPITAL LOBE Anatomy and pathophysiology [neurology.mhmedical.com]

Visual cortical hyperexcitability (10, 11) and thalamo-cortical dysrhythmia (12) have also been hypothesized as possible causes for the pathophysiology underlying visual snow. [rarediseases.org]

Prevention

Collaborative Meta-Analysis of Randomised Trials of Antiplatelet Therapy for Prevention of Death, Myocardial Infarction, and Stroke in High Risk Patients. ‎ [books.google.es]

Manipulations that prevented the changes in visual cortex also blocked memory formation. [bcs.mit.edu]

Visual impairment and blindness in Europe and their prevention. Br J Ophthalmol. 2002;86:716-22. [ Links ] 7. de Verdier K, Ulla E, Löfgren S, Fernell E. [scielo.org.mx]

(NCIt) Mild Cognitive Impairment : memory or other impairments that prevent (individuals) from sustaining an independent lifestyle. [richardsonthebrain.com]

The current evidence seems to show that commonly used medications such as migraine preventives, antidepressants or pain medication do not consistently improve or worsen visual snow. [rarediseases.org]

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