amaurosis and visual hallucinations
- amaurosis and visual hallucinations
In Greek, the noun amaurosis refers to a darkening or loss of vision. In present-day biomedicine, it is used to denote a type of visual loss that is not due to intraocular pathology. A congenital type of amaurosis is known as "Leber's congenital amaurosis. Transient types of amau-rosis are referred to as "amaurosis fugax. All types of amaurosis can theoretically be complicated by " visual hallucinations (as in the " Charles Bonnet syndrome, for example). Such visual hallucinations are sometimes referred to as " ophthalmopathic hallucinations.
References
Teunisse, R.J., Cruysberg, J.R., Hoefnagels, W.H., Verbeek, A.L., Zitman, F.G. (1996). Visual hallucinations in psychologically normal people: Charles Bonnet's syndrome. Lancet, 347, 794-797.
Dictionary of Hallucinations.
J.D. Blom.
2010.
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amaurosis fugax and visual hallucinations — The noun amaurosis is Greek for darkening or loss of vision; the adjective fugax comes from the Latin noun fuga, or flight. The term amau rosis fugax translates loosely as transient blindness. It is used to denote a sudden, painless, temporary … Dictionary of Hallucinations
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quadrantanopsia and hallucinations — The term quadrantanopsia comes from the Latin noun quadrans (the quarter part of a circle), and the Greek words an (not) and opsis (seeing). It translates as blindness within a quarter of the field of vision . Quadrantanopsia is attributed… … Dictionary of Hallucinations
postictal amaurosis — A term used to denote avariantof * amaurosis fugax (i.e. transient blindness) which is attributable to an epileptic seizure. Postictal amaurosis can affect the visual field in whole or in part. In the majority of cases, it affects only one of… … Dictionary of Hallucinations
Leber's Congenital Amaurosis (LCA) and hallucinations — The eponym Leber s congenital amaurosis refers to the German ophthalmologist Theodor Karl Gustav von Leber (1840 1917), who was the first to describe the concomitant condition in 1869. LCA is considered a type of amaurosis, due to an autosomal … Dictionary of Hallucinations
Charles Bonnet syndrome — (CBS) The eponym Charles Bonnet syndrome (CBS) refers to the Swiss naturalist and philosopher Charles Bonnet (1720 1792). It was introduced in 1936 by the Swiss neurologist Georges de Mor sier (1894 1982) to denote a hallucinatory state or… … Dictionary of Hallucinations
migraine aura — The term migraine comes from the Old English megrim, which is in turn indebted to the Greek noun hèmikranion (meaning half the skull). The introduction of the term hèmikranion is attributed to the classical physician Galen of Pergamum, born as … Dictionary of Hallucinations
Hildegard of Bingen — (1098 1179) Also known as St. Hildegard. A German Benedictine abbess and mystic whose advanced social and theological views are based on a series of visions she experienced from the age of 3. On the basis of her own portrayals of these visions … Dictionary of Hallucinations
obscuration — The term obscuration comes from the Latin adjective obscurus, which means dark. It translates as darkening . The term is used to denote a transient loss of visual perception. Such losses of visual perception typically last no longer than a few … Dictionary of Hallucinations
Color blindness — Colorblind and Colourblind redirect here. For other uses, see Colorblind (disambiguation). Color blindness or color deficiency Classification and external resources An 1895 illustration of normal vision and various kinds of color blindness … Wikipedia
