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1 General aspects (0)   1.1 Epidemiology (12)   1.2 Population genetics (1)   1.3 Pathogenesis (1)   1.4 Quality of life (4)   1.5 Glaucomas as cause of blindness (2)   1.6 Prevention and screening (3) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (3)   2.2 Cornea (34)   2.3 Sclera (4)   2.4 Anterior chamber angle (3)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (6)     2.5.2 Schlemms canal (0)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (1)     2.6.1 Production (3)     2.6.2 Outflow (0)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (1)     2.6.3 Compostion (1)   2.7 Episcleral veins and venous pressure (1)   2.8 Iris (3)   2.9 Ciliary body (2)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (1)   2.13 Retina and retinal nerve fibre layer (25)   2.14 Optic disc (23)   2.15 Optic nerve (4)   2.16 Chiasma and retrochiasmal central nervous system (2)   2.17 Stem cells (0)   2.20 Other (2) 3 Laboratory methods (0)   3.1 Microscopy (1)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (3)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (1)     3.4.2 Gene studies (12)   3.5 Molecular biology incl. 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(4)

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Abstract #15207 Published in IGR 8-4

Ultrasound biomicroscopy in asymmetric pigment dispersion syndrome and pigmentary glaucoma

Kanadani FN; Dorairaj S; Langlieb AM; Shihadeh WA; Tello C; Liebmann JM; Ritch R
Archives of Ophthalmology 2006; 124: 1573-1576

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OBJECTIVE: To identify differences in anterior chamber anatomy among patients with asymmetric pigment dispersion syndrome and no other discernible cause for the asymmetry. METHODS: Ultrasound biomicroscopy and A-scan biometry were performed on both eyes of 13 patients with asymmetric pigment dispersion syndrome without a known cause for asymmetric involvement. A radial perpendicular image in the horizontal temporal meridian detailing the scleral spur, angle anatomy, and iris configuration was obtained for each eye by 2 examiners. RESULTS: There were no differences in lens thickness (P = .33), refractive error (P = .84), or axial length (P = .99) between more and less affected eyes. However, the mean ± SD iris concavity (P < .001), iris-lens contact distance (P = .02), and distance from the scleral spur to the iris insertion (0.42 ± 0.11 vs 0.29 ± 0.06 mm) (P = .002) were greater in the more affected eye of each patient. CONCLUSION: A more posterior iris insertion predisposes to the phenotypic expression of pigment dispersion syndrome.

Dr. F.N. Kanadani, Department of Ophthalmology, The New York Eye and Ear Infirmary, New York, NY 10003, USA

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Classification:

6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
9.4.3.1 Pigmentary glaucoma (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.3 Glaucomas associated with disorders of the iris and ciliary body)
2.8 Iris (Part of: 2 Anatomical structures in glaucoma)

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