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Show LITERATURE ABSTRACTS 289 Magnetic Resonance Angiography of Vascular Lesions Causing Neuro-ophthalmic Deficits. Hamed LM, Silbiger J, Silbiger M, Quisling R, Fanous M, Arrington J, Guy J. Surv OphthalmoI1993;37:425-34 (May-Jun). [Reprint requests to Dr. L. M. Hamed, Department of Ophthalmology, University of Florida College of Medicine, Box 100284, JHMHSC, Gainesville, FL 32610-0284.] This article features magnetic resonance angiogram (MRA) pictures and a clinically practical list of advantages and limitations of MRA currently, and the actual technique is discussed in detail. This is an excellent reference regarding the state of the art with magnetic resonance angiography. Lyn A. Sedwick, M.D. Visual Loss Complicating OKT3 Monoclonal Antibody Therapy. Dukar 0, Barr Cc. Am J Ophthalmol 1993;115:781-5 Gun). [Reprint requests to Dr. e. c. Barr, Department of Ophthalmology, University of Louisville School of Medicine, 301 E. Muhammad Ali Blvd., Louisville, KY 40292.] Two patients in their 20s underwent renal transplantation requiring postoperative OKT3, a murine monoclonal antibody, to prevent rejection. In each, profound visual loss occurred coincident with OKT3 use. One patient showed an extinguished electroretinogram. Profound, irreversible visual loss has previously been reported with OKT3 but was thought secondary to an optic neuropathy. The authors believe direct toxicity of the retina is the cause of the visual loss in such patients. Lyn A. Sedwick, M.D. Clinical Subtypes of Cone-Rod Dystrophy. Szlyk JP, Fishman GA, Alexander KR, Peachey NS, Derlacki OJ. Arch OphthalmoI1993;111:781-8 Gun). [Reprint requests to Dr. J. P. Szlyk, University of Illinois at Chicago, 1855 W Taylor St, Chicago, IL 60612.] The authors performed electroretinography and other tests on 33 patients from 25 families who had cone-rod dystrophy and were able to demonstrate four "functionally distinct subtypes of cone-rod dystrophy that may be useful for patient counseling and future molecular genetic studies." Details of clinical examination and electroretinographic date are given in Tables 1 and 2. Nice color fundus photographs are included. Lyn A. Sedwick, M.D. Optic Nerve Sheath Fenestration Through a Lateral Canthotomy Incision. Kersten RC, Kulwin DR. Arch Ophthalmol 1993;111:870--4 Gun). [Reprints not available.] The authors describe their technique using a lateral canthotomy to reach the optic nerve for fenestration surgery. They feel this procedure gives superior results to a medial approach and results in less surgical scarring than a lateral orbitotomy. Black and white pictures of an operation in progress are included. Lyn A. Sedwick, M.D. Optic Neuritis Treatment Trial. One-Year FollowUp Results. Beck RW, Cleary PA, the Optic Neuritis Study Group. Arch OphthalmoI1993;111:773-5 Gun). [Reprint requests to Dr. R. W. Beck, Department of Ophthalmology, University of South Florida College of Medicine, 12901 Bruce B. Downs Blvd, MDC Box 21, Tampa, FL 33612.] This paper gives further follow-up data regarding the 457 patients with acute demyelinative optic neuritis who were initially reported in the New England Journal of Medicine at their 6-month follow-up (1992;326:581-588). At 6 months, there was a "slight visual benefit" for patients who received intravenous corticosteroids versus placebo; but at the I-year follow-up, there was no longer a significant difference between these groups. Therefore, the authors conclude that the benefit of intravenous corticosteroid is limited to accelerated recovery but not long-term improved visual status. Recommendations for specific therapy regimens with intravenous corticosteroid on an outpatient basis are included in the final paragraph of this paper. Lyn A. Sedwick, M.D. Radiotherapy in the Management of Thyroid Orbitopathy. Computed Tomography and Clinical Outcomes. Kao SCS, Kendler DL, Nugent RA, JClin NeurlHJphthalmol, Vol. 13, No.4, 1993 |