Anatomic Relationships between Disc Hemorrhage and Parapapillary Atrophy - 20/08/11
, Ilya Rozenbaum a, Zaher Sbeity a, Shlomit F. Sandler a, Celso Tello a, Robert Ritch a, d
Inquiries to Jeffrey M. Liebmann, 310 East 14th Street, New York, NY 10003Résumé |
Purpose |
Parapapillary atrophy (PPA) and disc hemorrhage (DH) are associated with glaucoma. We sought to determine whether they are anatomically related.
Design |
Retrospective study.
Methods |
All digital optic nerve stereophotographs obtained over a one-year period were screened for the presence of DH. Only patients with DH were included. The location of the greatest β zone PPA width as defined by the radial distance between the scleral rim and the outer border of the β zone was compared in each patient. The clock hour location of the DH was determined. Baseline central corneal thickness, intraocular pressure, vertical cup-to-disc ratio, and visual field indices were obtained.
Results |
Photographs from 1,559 glaucoma patients were evaluated and 46 eyes with unilateral DH were identified; 42 (91.3%) had β zone PPA and 38 eyes had asymmetric PPA width. DH occurred more frequently in the eye with the greater PPA width (29/38 eyes [76.3%]; κ = 0.611; P < .001). The DH fell on the point of greatest PPA width in 10 (23.9%) of 42 eyes (P < .05, Fisher exact test) and within two clock hours of the greatest PPA width in 31 (73.8%) of 42 eyes (P < .001, Chi-square test). Logistic regression analysis determined that greater PPA width (odds ratio, 17.16; 95% confidence interval, 5.34 to 55.12; P < .001) was the only ocular characteristic to predict the laterality of the DH.
Conclusions |
DHs tend to occur in the eye with the greatest PPA width and usually are found within the region of its greatest width.
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Vol 146 - N° 5
P. 735 - novembre 2008 Retour au numéro
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