Visual field defectHomonymous hemianopia is a visual defect caused by various pathological processes of the central nervous system, particularly if located beyond the optic chiasm. In the first part of this chapter, wedoi:10.1007/978-3-319-52284-5_2Petr Marsalek...
To understand what a visual field defect is, it may be helpful to think of a view as it is seen through binoculars. The two circular areas that are shown can be considered the visual field. A person’s visual field should include the ability to see a certain amount vertically and horizon...
visual field defectSince its introduction in the 19th century perimetry has been used to help localise lesions responsible for visual field defects. In this review the visual field defects produced by lesions at different sites along the neurological visual pathway will be discussed and unusual and...
visual field defect Dictionary, Encyclopedia and Thesaurus - The Free Dictionary13,814,848,094visits served TheFreeDictionary Google ? Keyboard Word / Article Starts with Ends with Text EnglishEspañolDeutschFrançaisItalianoالعربية中文简体PolskiPortuguêsNederlandsNorskΕλληνικ...
visual field Thesaurus Medical Acronyms Encyclopedia Wikipedia Related to visual field:perimetry,visual acuity,Visual pathway visual field n. The space or range within which objects are visible to the immobile eyes at a given time. Also calledfield of vision. ...
Recognising a potential visual-field (VF) defect in paediatric patients might be challenging, especially in children before the age of 5 years and those with developmental delay or intellectual disability. Visual electrophysiological testing is an object
Giant aneurysms of the carotid system presenting as visual field defect. J Neurol Neurosurg Pschiatr 43: 1053–1064, 1980 Article CAS Google Scholar Walsh FB. Visual field defects due to aneurysms at the circle of Willis. Arch Ophthalmol 71: 15–26, 1964 Article PubMed CAS Google Scholar ...
2 It is likely that there is a prevalence of more than 30% for patients on therapy for more than a year, of less severe, but significant visual field loss which is progressive whilst therapy is continued. Once the visual field defect is detected the majority of patients stop VGB. However...
The results were considered to be reliable if it met the following conditions: (1) fixation loss < 20%; (2) short-term fluctuation < 2 db; (3) false-positive and false-negative rate < 30%; and (4) patients with corresponding arcuate visual field defect in both 30-2 ...
Visual Field Defects due to Hypoplasia of the Optic NerveAny visual field defect associated with hypoplasia of the optic nerve is a reflection of the distribution and severity of axonal deficit. Patients with a uniformly distributed, low-degree lack of nerve fibers cannot be expected to produce ...