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  • Title: [ERG and VECP in chronic progressive external ophthalmoplegia].
    Author: Berdjis H, Heider W, Demisch K.
    Journal: Klin Monbl Augenheilkd; 1984 Aug; 185(2):113-8. PubMed ID: 6482292.
    Abstract:
    Eleven patients suffering from chronic progressive external ophthalmoplegia (CPEO) were examined by means of electroretinography (ERG) and the visually evoked cortical potential (VECP) with flash and checkerboard-reversal stimuli. One patient exhibited a Kearns-Sayre syndrome, and in two patients fundoscopy revealed pigmentary retinopathy; the fundi of the other 8 patients were normal. In 3 of the patients with pigmentary retinopathy the ERG was slightly disturbed or normal, the P100 latency in the VECP being normal. In three out of 8 patients without retinal pigmentary changes the ERG indicated retinopathy. In 2 cases this was the only finding offering an explanation for the reduced visual acuity. One patient exhibited a considerably prolonged P100 latency in the pattern-reversal VECP of one eye, which might have been indicative of lesions of the visual pathway associated with CPEO.
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