Flash and pattern visual evoked potentials in the diagnosis and monitoring of dysthyroid optic neuropathy
نویسندگان
چکیده
منابع مشابه
Course of pattern-reversed visual evoked cortical potentials in 30 eyes after bony orbital decompression in dysthyroid optic neuropathy.
AIM To investigate optic nerve function using the pattern-reversed visual evoked cortical potentials (VECP) before and after bony orbital decompression in dysthyroid optic neuropathy (DON) due to Graves' disease. METHODS A total of 30 eyes of 15 patients (n=14 female) were observed over 30 ± 13 months after bony three-wall orbital decompression. We examined visual acuity (VA), VECP P100 ampli...
متن کاملPattern- and flash-evoked potentials in the assessment and management of optic nerve gliomas.
Visual evoked potentials were recorded in 25 young patients with optic nerve glioma. In only eight patients could pattern responses be recorded from the affected eyes and these were invariably abnormal. In nine cases with no pattern responses it was still possible to elicit flash responses from the affected eyes. Six patients showed pattern evoked potential changes indicating involvement of fib...
متن کاملPattern visual evoked cortical potentials in patients with toxic optic neuropathy caused by toluene abuse.
PURPOSE Electrophysiological evaluation of the visual function of patients with toxic neuropathy caused by toluene abuse. METHODS Fifteen patients (mean age 25.6 years, eight men and seven women) were diagnosed with bilateral optic neuropathy. Pattern visual evoked cortical potentials (PVECPs) and clinical symptoms were investigated. RESULTS Visual acuities at the initial visit were less th...
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A 27 year old woman with Graves' disease developed progressive ophthalmopathy and was noted to have abnormal visual evoked responses (VER). She was treated with high dose prednisone with clinical improvement and return of the visual evoked responses to normal. On withdrawal of steroids symptoms recurred and VER again were abnormal. Orbital irradiation was given with improvement in the ophthalmo...
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the present study investigated the effect of the two vocabulary teaching techniques in est, namely the use of translation and the use of visual aids as two separate vocabulary teaching techniques. to answer the question of the study, a pretest (michigan test) was administered to the 58 randomly selected est students at khajeh nasiredin tusi university, faculty of mechanics. after the homogeneit...
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ژورنال
عنوان ژورنال: Eye
سال: 1994
ISSN: 0950-222X,1476-5454
DOI: 10.1038/eye.1994.159