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Seong-Woo Kim, Jaeryung Oh, In Kyung Oh, Cheolmin Yun, Kuhl Huh; Retinal topography of myopic eyes: A spectral domain optical coherence tomography study. Invest. Ophthalmol. Vis. Sci. 2014;55(13):5941.
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The purpose of this study was to investigate topographic characteristics of the retina in myopic eyes.
We retrospectively reviewed spectral domain optical coherence tomography (SDOCT) images of patients with myopia. Retinal topography (RT) was defined as the topography of the retinal pigment epithelium layers, which was analyzed on pseudo-color coded topographical maps using SD-OCT. RTs were classified into several types, and the distribution and characteristics of each type were assessed in eyes with varying degrees of myopia.
A total of 263 eyes from 167 subjects with myopia were included in this study. Ninety-five eyes (40.3%) were classified as regular- (R) type, 63 (26.7 %) were wave- (W) type, 51(21.6%) were band- (B) type, and 27 (11.4%) were pond- (P) type. The distribution of these types was significantly different among eyes with different degrees of myopia (P < .001); R-type was predominant in eyes with 24 mm ≤ AL < 26 mm, W-type in eyes with 26 mm ≤ AL < 28 mm, and P-type in eyes with AL ≥ 28 mm. B-type RT was observed even in low grade myopia. Nasal slope was more frequently observed than temporal or middle slope, with the exception of the P-type RT. Topography of the central zone was frequently slanted, except in B-type eyes.
RT varies according to the degree of myopia. Changes in the topographic configuration of the retina may occur in the early stages of myopia, and are likely further enhanced in highly myopic eyes.
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