ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

Periodic alternating nystagmus 1) may be related to vestibulocerebellar system disease, 2) may occur with loss of vision, and 3) may be congenital in origin. We report the case of a patient with acquired periodic alternating nystagmus in whom the nystagmus followed bilateral vitreous hemorrhages. Upbeating nystagmus was interposed between the right beating and left beating phases. Bilateral vitrectomy resulted in the prompt disappearance of the nystagmus. The importance of visual function in relation to periodic alternating nystagmus and associated motility disturbances is emphasized.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

A series of patients is presented with partial oculomotor palsies. The accompanying signs of neurologic dysfunction are indicative of a mesencephalic lesion. The peculiar anatomy of the third cranial nerve permits one to infer precise localization of the lesions.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

Patients with homonymous hemianopic visual field defects have been treated by using a 30-diopter Fresnel plastic paste-on prism on their glasses. A patient with a left homonymous hemianopia, for instance, can have a 30-diopter base left (i.e., base out) Fresnel prism placed on the temporal half of the left spectacle lens. The prism need be only on one lens. A small 1− to 1.5-mm portion can be cut out of the center to prevent diplopia. This device is widely available and easier to obtain than a hemianopic mirror on the frames. Use of this device is illustrated in the report.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

The development of computer reconstructed images of the extracranial and intracranial vessels after injecting modest doses of intravenous contrast media has significantly altered standard angiography procedures. Intravenous digital subtraction angiography is a reproducible and rapid outpatient procedure that is less expensive and safer than conventional arteriography. The applications and limitations of this new technique to neuro-ophthalmology are discussed.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

A previously healthy 23-year-old white female presented with a history of horizontal diplopia prior to any other symptoms. Physical examination revealed bilateral sixth cranial nerve palsies, papilledema, right Horner's syndrome, and right hemiparesis.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

Intracranial dural fistulas in the region of the cavernous sinus usually occur in middle-aged or elderly women in whom physical findings of ocular pulsation, orbital bruit, and ocular injection are subtle or absent. We examined a 19-year-old man with hemophilia who had a red, mildly proptosed left eye. Typical features of a carotidcavernous sinus fistula were absent except for the presence of dilated, tortuous episcleral vessels. Directional Doppler ultrasound evaluation detected retrograde blood flow in the left frontal vein and thus confirmed the presence of an arteriovenous shunt. After a selective internal carotid angiogram demonstrated a shunt from a dural branch of the internal carotid artery, the patient's symptoms remitted spontaneously. Directional Doppler ultrasonography is a noninvasive test that can detect the presence of a low flow, retrobulbar arteriovenous shunt in the region of the cavernous sinus.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

A 19-month-old female infant with a Dandy-Walker cyst had anomalous optic discs, each of which appeared to divide to form an accessory optic nerve. The discs probably lie within the spectrum of anomalous discs including optic nerve aplasia and hypoplasia, megallopapillae, morning glory disc, optic disc dysplasia, and optic nerve colobomas. The association of anomalous optic discs with a Dandy-Walker cyst has not been previously recognized. The ocular and brain malformations in this patient likely occurred during the fourth to eighth week of gestation, when the retinal ganglion cell axons were penetrating the optic nerve, and the rhombic lips were enlarging in early cerebellar development. The etiology of these anomalies is not known; however, teratogens, sporadic events, and genetic disorders should be considered.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

A 35-year-old female without evidence of atherosclerotic vascular disease underwent percutaneous femoral cerebral angiography. Perifoveal retinal infarction by exogenous arteriolar emboli produced a permanent absolute pericentral scotoma. Strict adherence to meticulous angiographic technique may prevent such an angiographic complication.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID

摘要:

Posterior fossa aneurysms comprise a minority of intracranial aneurysms, but produce a wide array of signs and symptoms. We report a patient with slowly progressive unilateral sixth nerve paresis secondary to a saccular aneurysm of the posterior-inferior cerebellar artery. Neuroradiologic investigation of subarachnoid hemorrhage is discussed, and the literature concerning posterior circulation aneurysms is reviewed.

ISSN:0272-846X    

出版商:OVID    

年代:1982

数据来源: OVID