Three-dimensional tomographic features of dome-shaped macula by swept-source optical coherence tomography.

Abstract:

PURPOSE:To study the tomographic and pathomorphologic features of dome-shaped maculas with swept-source optical coherence tomography (OCT). DESIGN:Prospective, cross-sectional study. METHODS:The macular area of 51 highly myopic eyes (35 patients) with dome-shaped maculas was studied with swept-source OCT at 1050 nm. Three-dimensional (3-D) data sets were obtained with raster scanning covering a 12 × 8-mm(2) area; 3-D images of the posterior pole were constructed by autosegmentation of the retinal pigment epithelium (RPE). RESULTS:In all reconstructed 3-D images of the RPE, 2 outward concavities were seen within the posterior staphyloma and a horizontal ridge was formed between these 2 concavities. In 42 of these eyes, this horizontal ridge was band shaped. The vertical OCT section through the fovea showed a convex configuration of RPE, but the horizontal section showed an almost flat RPE line. In 9 eyes, 3-D images showed a typical dome-shaped convexity within the staphyloma. OCT scans showed no outward protrusions in the external scleral surface, but marked scleral thinning was seen consistent with the 2 outward concavities of the RPE. The sclera of the fovea (518.6 ± 97.6 μm) was significantly thicker than that in all 4 quadrants of the parafoveal area (range, 277.2 to 360.3 μm; P < .001). CONCLUSIONS:In highly myopic eyes with a dome-shaped macula, a horizontal ridge is formed within the posterior staphyloma by uneven thinning of the sclera.

journal_name

Am J Ophthalmol

authors

Ellabban AA,Tsujikawa A,Matsumoto A,Yamashiro K,Oishi A,Ooto S,Nakata I,Akagi-Kurashige Y,Miyake M,Elnahas HS,Radwan TM,Zaky KA,Yoshimura N

doi

10.1016/j.ajo.2012.08.007

subject

Has Abstract

pub_date

2013-02-01 00:00:00

pages

320-328.e2

issue

2

eissn

0002-9394

issn

1879-1891

pii

S0002-9394(12)00578-8

journal_volume

155

pub_type

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