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Show 72 LITERATURE ABSTRACTS Magnetic Resonance Imaging of Superior Oblique Muscle Atrophy in Acquired Trochlear Nerve Palsy. Horton JC, Rong- Kung T, Truwit CL, Hoyt WF. Am J Ophthalmol 1990; 110: 315- 6 ( Sept). [ Inquiries to Dr. W. F. Hoyt, Neuro- Ophthalmology Unit, School of Medicine, University of California, San Francisco, CA 94143- 0350.) Good magnetic resonance pictures show an atrophic superior oblique muscle compared to the normal contralateral muscle. The authors feel that this finding in a patient with acquired oblique palsy denotes innervational palsy. Lyn A. Sedwick, M. D. Reversible Visual Loss Caused by Fibrous Dysplasia. Weisman JS, Hepler RS, Vinters HV. Am J OphthalmoI1990; 110: 22~ 9 ( Sept). [ Reprint requests to Dr. R. S. Hepler, Jules Stein Eye Institute, 800 Westwood Plaza, Los Angeles, CA 90024.] A patient with known fibrous dysplasia had three episodes of abrupt monocular visual loss. The first episode had resolution with prednisone therapy but the second and third episodes led to surgical decompression of the optic canal, and findings on computerized tomography suggested optic nerve compromise. Each surgical procedure was followed by good return of visual function. Lyn A. Sedwick, M. D. Evaluation of Acute Radiation Optic Neuropathy by B- scan Ultrasonography. Lovato AA, Char DH, Quivey JM, Castro JR. Am J Ophthalmol 1990; 110: 233- 6 ( Sept). [ Reprint requests to Dr. D. H. Char, Ocular Oncology Unit, P. O. Box 0730, University of California, San Francisco, CA 94143.] The authors describe increased optic nerve shadow found in B- scan ultrasonography of 13 of 15 patients who had presumed radiation- induced optic neuropathy after treatment with helium ion external beam or iodine 125 brachytherapy for choroidal melanoma. The two cases without this finding presumably had early optic atrophy. This disease differs from the radiation optic neuropathy seen with more posterior external beam irradiation and seems to present clinically with a picture of anterior ischemic optic neuropathy. Lyn A. Sedwick, M. D. , j jqqj Familial Anterior Ischemic Optic Neuropathy and Papillophlebitis. Deutsch 0, Eting E, Avisar R, Klein T, Teller J, Savir H. Am J Ophthalmol 1990; 110: 306- 8 ( Sept). [ Inquiries to Dr. D. Deutsch, Department of Ophthalmology, Golda Medical Center, Hasharon Hospital, 7 Keren Kayemet Street, Petach- Tikva, Israel.] The authors report an index case of papillophlebitis who had identical twin sisters who had each experienced anterior ischemic optic neuropathy. Another family cluster that was previously reported is reviewed. The authors postulate that in these families genetic and environmental factors are important in causing vascular optic nerve events. Lyn A. Sedwick, M. D. Early Magnetic Resonance Imaging in Acute Traumatic Internuclear Ophthalmoplegia. Haller KA, Miller- Meeks M, Kardon R. Ophthalmology 1990; 97: 1162- 5 ( Sept). [ Reprint requests to Dr. R. Kardon, Department of Ophthalmology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242.] Three cases of trauma resulting in internuclear ophthalmoplegia, sometimes with other ocular and ocular motility findings, are presented with magnetic resonance scanning demonstrating mesencephalon changes on T2- weighted images consistent with edema. The authors, believing that traumatic internuclear ophthalmoplegia may have been underreported, urge that magnetic resonance imaging be used in such patients because computerized tomographic scanning generally is negative. Lyn A. Sedwick, M. D. Signs Distinguishing Spasmus Nutans ( with and without central nervous system lesions) from Infantile Nystagmus. Gottlob I, Zubcov A, Catalano RA, Reinecke RD, Koller HP, Calhoun JH, Manley DR. Ophthalmology 1990; 97: 1166- 75 ( Sept). [ Reprint requests to Dr. R. Reinecke, Wills Eye Hospital, Ninth and Walnut Streets, Philadelphia, PA 19107.] The authors use 10 clinical and eye movement recording criteria to distinguish infantile nystag- / |
