alexa Focal Temporal Scleral Bulge with Choroidal Thinning: An Under-Recognized Tomographic Feature
ISSN: 2155-9570

Journal of Clinical & Experimental Ophthalmology
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Research Article

Focal Temporal Scleral Bulge with Choroidal Thinning: An Under-Recognized Tomographic Feature

Rosa Dolz-Marco1*, Roberto Gallego-Pinazo1, Maria Isabel López-Gálvez2, Jose I Tembl3, Manuel Díaz-Llopis4 and Carol Shields5
1Department of Ophthalmology, University and Polytechnic Hospital La Fe, Valencia, Spain
2Department of Ophthalmology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
3Department of Neurology, University and Polytechnic Hospital La Fe, Valencia, Spain
4Faculty of Medicine, University of Valencia
5Ocular Oncology Service Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA, United States of America (USA)
Corresponding Author : Rosa Dolz-Marco
Department of Ophthalmology
University and Polytechnic Hospital
La Fe. Bulevar Sur s/n. 46026, Valencia, Spain
Tel: 0034 650314806
Email: [email protected]
Received: February 05, 2015, Accepted: April 15, 2015, Published: April 20, 2015
Citation: Dolz-Marco R, Gallego-Pinazo R, López-Gálvez MI, Tembl JI, Díaz-Llopis M (2015) Focal Temporal Scleral Bulge with Choroidal Thinning: An Under-Recognized Tomographic Feature. J Clin Exp Ophthalmol 6:419. doi:10.4172/2155-9570.1000419
Copyright: © 2015 Dolz-Marco R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Purpose: To describe the swept source tomographic characteristics of focal temporal scleral bulge with choroidal thinning as a normal variation of the ocular anatomy in healthy eyes.
Methods:
Cross-sectional observational study. Swept-source optical coherence tomography (SS-OCT) examinations in healthy patients performed between October and December 2013 were analyzed. The presence of a focal scleral bulge with choroidal thickness (CT) variation was evaluated. In those cases with this finding we manually measured the extension of the scleral protuberance and the choroidal shape.
Results: There were 166 eyes of 106 patients analyzed and 13% (22 eyes of 16 patients) demonstrated a focal scleral bulge. The scleral bulge was not visible ophthalmoscopically in any case. By SS-OCT, the scleral bulge had a mean basal diameter of 3225 microns (range 1954-4908 microns) and mean distance temporal to the foveola of 2261 microns (range 1148-4173 microns). Compared to normal submacular scleral thickness, the temporal scleral bulge was a mean of 107 microns thicker (range 31-171 microns). The mean overlying choroidal thickness was 177 microns (range 79-326 microns) compared with mean subfoveal thickness in the involved eye of 250 microns (range 99-431 microns), mean thickness at temporal edge of the bulge of 312 microns (range 195-529 microns). The overlying retinal pigment epithelium and inner retinal contour were normal in all cases.
Conclusions: On SS-OCT, 13% of healthy eyes showed temporal scleral bulge with related choroidal thinning. The clinical significance of this novel sign is under evaluation.

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