منابع مشابه
Tumour of the optic chiasma.
Tumours arising in the small area at the base of the brain between the optic chiasma and cerebral peduncles are common and include meningiomas, suprasellar and pituitary neoplasms, aneurysm of the circle of Willis, and chiasmal arachnoiditis with cyst formation. Tumours arising in the optic chiasma and nerve sheaths, however, are very uncommon. In all these conditions, visual symptoms may obtru...
متن کاملGlioma of Chiasma and Optic Nerve.
IN a case of orbital optic nerve glioma without intracranial extension, Davis (1940) removed the tumour through a skin incision at the lower orbital margin, cutting the optic nerve near the apex of the orbit and behind the globe and thus retaining the eye. Verhoeff (1922) found that, even when the tumour was partially removed by the orbital route leaving some intracranial portion, no orbital re...
متن کاملThe anatomy of the optic chiasma and heteronymous hemianopia.
The gross anatomy of the optic nerves and chiasma has been studied, and differences in the tension in the crossed and uncrossed fibres after chiasmal displacement have been investigated. The anterior and posterior attachments of the medial and lateral fibres of the nerves have been studied. The chiasma has been dissected under low power microscopy and a three dimensional picture of it developed...
متن کاملFibre order in the normal Xenopus optic tract, near the chiasma.
In juvenile Xenopus retinotopic fibre order in the optic tract near the chiasma was investigated by labelling small groups of optic fibres from peripheral retina with HRP. This selective fibre labelling with HRP was combined with autoradiography following administration of tritiated thymidine to the eye, so that the HRP-labelled fibres could be located within the borders of the optic tract. Fib...
متن کاملBlood supply of the optic nerves and chiasma and its clinical significance.
The blood supply of the optic nerve has been a subject of controversy for at least 200 years, since the description of the arterial circle around the optic nerve head by Zinn (1755) and Haller (1754). Numerous papers have been written concerning the subject and in the past few years new techniques of injection, micro-angiography, and dissection and Neoprene casts have resulted in further papers...
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ژورنال
عنوان ژورنال: Archives of Disease in Childhood
سال: 1947
ISSN: 0003-9888,1468-2044
DOI: 10.1136/adc.22.112.248