Comparison of choroidal thickness between amblyopic and non-amblyopic eyes
DOI:
https://doi.org/10.11113/mjfas.v14n3.1126Keywords:
Myopic anisometropic amblyopia, choroidal thickness, children, optical coherence tomographyAbstract
Our study examined the choroidal thickness profile of children with myopic anisometropic amblyopia and compared the thickness with the fellow eyes. The choroidal thickness was measured with the enhanced depth imaging with spectral-domain optical coherence tomography. Manual segmentations of the choroid were performed on a 25-raster horizontal scan. The choroidal thickness measurements of the 9 subfields defined by the Early Treatment Diabetic Retinopathy Study (ETDRS) were evaluated. The mean spherical equivalent of the amblyopic eyes was -10.80 ± 0.41 D and the fellow eyes was -4.40 ± 2.05 D. The mean best corrected visual acuity of the amblyopic eyes and the fellow eyes were 0.94 ± 0.27 and 0.14 ± 0.05 logMAR respectively. The amblyopic eyes have longer axial length (26.46 ± 0.44 mm) compared to the fellow eyes (23.59 ± 1.18 mm). The average subfoveal choroidal thickness was 124.30 ± 40.71 µm in the amblyopic eyes and 246.80 ± 58.63 µm in the fellow eyes. The horizontal and vertical distribution pattern of choroidal thickness in amblyopic eyes was different from the fellow eyes. In amblyopic eye the choroidal thickness reduced from the temporal region to the nasal region. The fellow eyes had thickest choroid at the subfoveal area, followed by the temporal region and nasal region. In conclusion, the choroid was thinner in the amblyopic eyes than that of the fellow eyes at all regions.
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