Objective. To report interocular differences in choroidal thickness in children using spectral domain optical coherence tomography\n(SD-OCT) and correlate findings with biometric data. Methods. This observational cross-sectional study included 91 (182 eyes)\nhealthy children aged 6 to 17 years with no ocular abnormality except refractive error. After a comprehensive eye exam and\naxial length measurement, high definitionmacular scans were performed using SD-OCT. Two observersmanuallymeasured the\nchoroidal thickness at the foveal center and at 1500 ????m nasally, temporally, inferiorly, and superiorly. Interocular differences were\ncomputed; correlations with age, gender, refractive error, and axial length were performed. Results.Mean age was 10.40 �± 3.17 years;\nmean axial length and refractive error values were similar between fellow eyes. There was excellent correlation between the two\nobserversâ��measurements. No significant interocular differences were observed at any location. There was only a trend for right eyes\nto have higher values in all thicknesses, except the superior thickness. Most of the choroidal thickness measurements correlated\npositively with spherical equivalent but not with axial length, age, or gender. Conclusion. Choroidal thickness measurements in\nchildren as performed using SD-OCT revealed a high level of interobserver agreement and consistent interocular symmetry. Values\ncorrelated positively with spherical equivalent refraction.
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