The Missing Temporal Crescent

We studied clinically the representation of the monocular temporal crescent in the human visual cortex and noted the importance of using the perimetric techniques best suited to detect this visual field defect and to study patients in whom the temporal crescent is missing. Goldmann perimetry and hig...

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Bibliographic Details
Published in:American journal of ophthalmology 1995-03, Vol.119 (3), p.345-349
Main Authors: LANDAU, KLARA, WICHMANN, WERNER, VALAVANIS, ANTON
Format: Article
Language:English
Subjects:
Adult
Arteriovenous Malformations - complications
Arteriovenous Malformations - diagnosis
Biological and medical sciences
Cerebrovascular Disorders - complications
Cerebrovascular Disorders - diagnosis
Diseases of visual field, optic nerve, optic chiasma and optic tracts
Female
Humans
Magnetic Resonance Imaging
Medical sciences
Middle Aged
Ophthalmology
Vision Disorders - diagnosis
Vision Disorders - etiology
Vision, Monocular
Visual Cortex - blood supply
Visual Cortex - pathology
Visual Field Tests - methods
Visual Fields
Visual Pathways - pathology
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Summary:We studied clinically the representation of the monocular temporal crescent in the human visual cortex and noted the importance of using the perimetric techniques best suited to detect this visual field defect and to study patients in whom the temporal crescent is missing. Goldmann perimetry and high-resolution magnetic resonance imaging were performed in two patients with vascular lesions located in the anterior striate cortex. A monocular visual field defect, the missing temporal crescent, was found on the side contralateral to the lesion. The perimetric-magnetic resonance imaging correlation is in exquisite agreement with recent information about the representation of the visual field in the human primary visual cortex. Reports of this specific perimetric finding are rare, in part because of underdetection with currently used perimetric techniques that concentrate on the central 30 degrees of the visual field.
ISSN:0002-9394
1879-1891
DOI:10.1016/S0002-9394(14)71178-X