2 CASE REPORTS OF OPTIC CHIASMAL SYNDROME
Abstract
The optic chiasm is one of the most important structures in neuro ophthalmologic diagnosis. The arrangement of visual fibres in the chiasm accounts for characteristic defects in the visual fields caused by such diverse processes as compression , inflammation , demyelination, ischemia and infiltration. Two cases are presented here. The first case presented with right temporal field defect with central scotoma of the left eye and bilateral papilledema. MRI SCAN showed it as suprasellar astrocytoma. The second case presented with temporal field defect and left eye optic atrophy. MRI SCAN showed it as pituitary macro adenoma or dorsal sella meningioma. Thus showing the importance of ocular examination in identifying intracranial tumours.
Full Text:
PDFReferences
Foroozan R. Chiasmal syndromes. Current opinion in ophthalmology. 2003 Dec 1;14(6):325-31.
Cushing H. The chiasmal syndrome: of primary optic atrophy and bitemporal field defects in adults with a normal sella turcica. Archives of Ophthalmology. 1930 May 1;3(5):505-51.
Mejico LJ, Miller NR, Dong LM. Clinical features associated with lesions other than pituitary adenoma in patients with an optic chiasmal syndrome. American journal of ophthalmology. 2004 May 31;137(5):908-13.
WAGENER HP, CUSICK PL. Chiasmal syndromes produced by lesions in the posterior fossa. Archives of Ophthalmology. 1937 Dec 1;18(6):887-91.
Levin LA. Topical diagnosis of chiasmal and retrochiasmal disorders. Walsh and Hoyt clinical neuro-ophthalmology, 6th ed. Baltimore: Williams & Wilkins. 2005:503-73.
Savino PJ, Glaser JS, Schatz NJ. Traumatic chiasmal syndrome. Neurology. 1980 Sep 1;30(9):963-.
Refbacks
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
An Initiative of The Tamil Nadu Dr MGR Medical University