Three-Dimensional Tomographic Features of Dome-Shaped Macula by Swept-Source Optical Coherence Tomography - 12/01/13
, Akiko Matsumoto a, c, Kenji Yamashiro a, Akio Oishi a, Sotaro Ooto a, Isao Nakata a, Yumiko Akagi-Kurashige a, Masahiro Miyake a, Hussein S. Elnahas b, Tarek M. Radwan b, Khaled A. Zaky b, Nagahisa Yoshimura a
Inquiries to Akitaka Tsujikawa, Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507, JapanAbstract |
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-mm2 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.
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Vol 155 - N° 2
P. 320 - février 2013 Retour au numéro
Article précédent
- The Relationship Between Axial Length and Choroidal Thickness in Eyes With High Myopia
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- Jong Yeon Lee, Chungkwon Yoo, Yong Yeon Kim
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