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 headac
andTakatoshiMaenoandTomiyaManoandHisatoshiSDOSJapanese Journal of OphthalmologyTakenaka H, Maeno T, Mano T, Mitsuda H. Causes of visual field defects after vitrectomy. Nihon Ganka Gakkai Zasshi. 1999; 103:399-403.Takenaka H, Maeno T, Mano T, Mitsuda H. Causes of visual field defects after ...
The causes of a visual field defect can greatly vary. Often, there are certain causes associated with the various types of defects. For example, a peripheral visual field defect could be caused by glaucoma or retinal detachment. If there is a central field defect, this could be caused by ma...
visual field noun Synonyms for visual field nounall of the points of the physical environment that can be perceived by a stable eye at a given moment Synonyms field of regard field of vision Related Words visual percept visual image Based on WordNet 3.0, Farlex clipart collection. © 2003-...
Since HVF disorders are often related to visual field defects [10], the hemispherical screen presents the advantage of testing HVF in the region of the visual field that is still intact. Furthermore it allows for consideration of the effects of central vision and peripheral vision while ...
(1) Lack of visual perception due to structural or functional defects, which can occur anyplace from the eyelids to the visual cortex. (2) An inability to perceive the parameters of a scene in the nominal visual field of a subject in the presence of adequate illumination. ...
Complete visual-field loss The causes of complete or generalised VF loss can be divided into three categories. The first group of disorders causing generalised VF defects are pre-retinal, including ptosis of the eyelid, cataract, vitreous haemorrhage and other media opacities. Visual electrodiagnostic...
This case report describes the development of asymptomatic visual field defects (VFDs) in a psychiatric patient with bipolar disorder receiving adjunctive tiagabine treatment. These defects were apparently reversible upon the discontinuation of tiagabine. Controlled clinical trials are indicated to determine ...
In other words, field of view is everything that (at a given time) causes light to fall onto the retina. This input is processed by the visual system, which computes the visual field as the output. The term is often used in optometry and ophthalmology, where a visual field test is ...
This test is most often used to detect central visual field defects. Static automated perimetry (such as Octopus or the Humphrey Field Analyzer): Pinpoint flashes of light of varying size and brightness are projected within a large white bowl. The patient is asked to look at the center of...