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Show LITERATURE ABSTRACTS 209 Rotterdam, Schiedamsevest 180, 3011 BH Rotterdam, The Netherlands.] This very interesting study (1) compares the acquired ptosis of 17 patients who wore hard contact lenses to the involutional ptosis of another group of 73 patients and (2) compares eyelid position in 46 patients who wore hard contact lenses at least 10 years with 50 age-matched controls. The authors found hard contact lens-ptosis to be identical to involutional, that is, both appeared to be from dehiscence of the levator aponeurosis. Also, hard contact lens wearers on average had 0.5 mm of ptosis ("sag" according the authors) compared to non-hard contact lens wearers. Possible causes of the "sag" are discussed by the authors. Lyn A. Sedwick, M.D. Epithelioid Hemangioendothelioma of the Orbital Bones. Lyon DB, Tang TT, Kidder TM. Ophthalmology 1992;99:1773-8 (Dec). [Reprint requests to Dr. D. B. Lyon, 2600 N Mayfair Rd, Suite 950, Milwaukee, WI 53226.] A 3V2-month-old boy presented with a rapidly growing orbital mass, which pathologically was found to be hemangioendothelioma and removed en bloc. The patient did well. Lyn A. Sedwick, M.D. Acquired Heterochromia with Horner Syndrome in Two Adults. Diesenhouse MC, Palay DA, Newman NJ, To K, Albert OM. Ophthalmology 1992;99: 1815-7 (Dec). [Reprint requests to Dr. N. I. Newman, Neuro-Ophthalmology, Emory Eye Center, 1327 Clifton Road, NE, Atlanta, GA 30322.] Two patients with acquired Horner's syndrome noted 5 years and 15 years later a change in the color of the ipsilateral iris. Hydroxyamphetamine testing was weakly positive in both, cocaine testing was positive. The authors speculate on partial transsynaptic degeneration in the postganglionic neuron and how the heterochromia might arise. Lyn A. Sedwick, M.D. Neuro-ophthalmologic Findings in Chordoma and Chondrosarcoma of the Skull Base. Volpe NI, Liebsch NJ, Munzenrider IE, Lessell S. Am JOphthalmol 1993;115:97-104 Oan). [Reprint requests to Dr. S. Lessell, Massachusetts Eye and Ear Infirmary, 243 Charles Street, Boston, MA 02114.] In this report, 48 patients with chordoma and 49 with chondrosarcoma are compared and contrasted in regard to their neuro-ophthalmic presentation. About half of the patients with either tumor may present with diplopia or visual impairment. Patients with chordoma were more likely to present with a normal examination (31 %) than chondrosarcoma (8%), however, probably because of the different origins of the tumor, with chordoma at the clivus and chondrosarcoma from temporal bone. Specific cranial nerves, oculomotor and otherwise, are tabulated for each tumor in this nice, rather large series. Lyn A. Sedwick, M.D. The Efficacy of Optic Nerve Sheath Decompression for Anterior Ischemic Optic Neuropathy and Other Optic Neuropathies. Sadun AA. Am JOphthalmol 1993;115:384-9 (Mar). [Reprint requests to Dr. A. A. Sadun, Doheny Eye Institute, 1450 San Pablo Street, Los Angeles, CA 90033.] This very thoughtful and reasonable discussion of optic nerve sheath decompression and its possible mechanism gives the rational behind the currently ongoing Ischemic Optic Neuropathy Decompression Trial. Lyn A. Sedwick, M.D. Orbital Metastasis from Medullary Carcinoma of the Thyroid. Margo CE, Levy MH. Am J Ophthalmol 1993;115:394-5. (Mar). [Inquiries to Dr. C. E. Margo, University of South Florida, 12901 Bruce Downs Boulevard, MDC Box 21, Tampa, FL 33612.] A patient developed signs and symptoms of an orbital tumor versus thyroid eye disease. A mass contiguous with the inferior rectus was imaged on magnetic resonance and resected with pathologic features similar to those of medullary thyroid carcinoma resected in this man 9 years previously. Lyn A. Sedwick, M.D. I elin Neuro-ophlhalmol, Vol. 13, No.3, 1993 |