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January 1958


Author Affiliations

State University of Iowa University Hospitals Iowa City

AMA Arch Ophthalmol. 1958;59(1):149. doi:10.1001/archopht.1958.00940020177019

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To the Editor:  —If electroretinography has any place in clinical ophthalmology at all, then this place is surely in the differential diagnosis of the tapetoretinal degenerations. The knowledge in this field has recently been splendidly summarized by Franceschetti and Dieterle (Elektroretinographie, in Hamburg Symposium, Bibl. Ophth., Fasc. 48, Basel and New York, S. Karger, 1957). In this article it is made clear by many personal contributions of the authors that an extinguished electroretinogram is not only pathognomonic for chorioretinal abiotrophies but essential in establishing the correct diagnosis in difficult or doubtful cases.In view of this situation, it would be very significant if it could be shown that there are well-substantiated cases of retinitis pigmentosa in which there is an electroretinogram of normal shape, though possibly of reduced amplitude. Unfortunately, the case presented by Skeehan, Passmore, and Armington (A. M. A. Arch. Ophth. 57:536 [April] 1957) is not a well-substantiated

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