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  • Title: Ultrasound biomicroscopy in asymmetric pigment dispersion syndrome and pigmentary glaucoma.
    Author: Kanadani FN, Dorairaj S, Langlieb AM, Shihadeh WA, Tello C, Liebmann JM, Ritch R.
    Journal: Arch Ophthalmol; 2006 Nov; 124(11):1573-6. PubMed ID: 17102004.
    Abstract:
    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.
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