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Evaluation of peripapillary choroidal distribution in children by enhanced depth imaging optical coherence tomography.
BMC Ophthalmology 2018 July 14
BACKGROUND: To evaluate the peripapillary choroidal thickness (PPCT) in Chinese children aged 6 to 12 years old and to analyze correlative factors.
METHODS: PPCT was measured with enhanced depth imaging optical coherence tomography (EDI-OCT) in 154 children (76 myopes and 78 emmetropia) aged 6 to 12 years, with spherical equivalent refractive errors between + 0.50 and - 5.50 diopters(D). Peripapillary choroidal imaging was performed using circular scans of a diameter of 3.4 mm around the optic disc. PPCT and the corresponding peripapillary retinal thickness (PPRT) were measured by EDI-OCT at nine positions: I, inferior; IN, inferonasal; IT, inferotemporal; N, nasal; T, temporal; S, superior; SN, superonasal; ST, superotemporal, and the Fovea Centralis.
RESULTS: The mean global PPCT was 165.80 ± 39.86 μm.The mean global PPRT was 101.47 ± 10.74 μm. The Inferior had the thinnest PPCT but the thickest PPRT (p < 0.001), while the Nasal had thickest PPCT but the thinnest PPRT (p < 0.001). Significant differences in RT between the myopic group and the emmetropic group were found at all positions except T, TS, S and the fovea. Myopic group had thinner choroidal thickness (CT) than that of emmetropic group at all measured positions. Choroidal thickness had negative relation with the corresponding retinal thickness, age and axial length.
CONCLUSION: The peripapillary choroid was thicker nasally and thinner inferiorly, while the peripapillary retina was thickest inferiorly and thinnest nasally. Myopic group had thinner PPCT. The axial length was found to be negatively correlated to PPCT.
METHODS: PPCT was measured with enhanced depth imaging optical coherence tomography (EDI-OCT) in 154 children (76 myopes and 78 emmetropia) aged 6 to 12 years, with spherical equivalent refractive errors between + 0.50 and - 5.50 diopters(D). Peripapillary choroidal imaging was performed using circular scans of a diameter of 3.4 mm around the optic disc. PPCT and the corresponding peripapillary retinal thickness (PPRT) were measured by EDI-OCT at nine positions: I, inferior; IN, inferonasal; IT, inferotemporal; N, nasal; T, temporal; S, superior; SN, superonasal; ST, superotemporal, and the Fovea Centralis.
RESULTS: The mean global PPCT was 165.80 ± 39.86 μm.The mean global PPRT was 101.47 ± 10.74 μm. The Inferior had the thinnest PPCT but the thickest PPRT (p < 0.001), while the Nasal had thickest PPCT but the thinnest PPRT (p < 0.001). Significant differences in RT between the myopic group and the emmetropic group were found at all positions except T, TS, S and the fovea. Myopic group had thinner choroidal thickness (CT) than that of emmetropic group at all measured positions. Choroidal thickness had negative relation with the corresponding retinal thickness, age and axial length.
CONCLUSION: The peripapillary choroid was thicker nasally and thinner inferiorly, while the peripapillary retina was thickest inferiorly and thinnest nasally. Myopic group had thinner PPCT. The axial length was found to be negatively correlated to PPCT.
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