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Comparative difference of the choroidal thickness according to the refractive errors measured by enhanced depth imaging optical coherence tomography
Author(s) -
LEE J,
YU S
Publication year - 2014
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2014.t101.x
Subject(s) - emmetropia , optical coherence tomography , ophthalmology , refractive error , medicine , significant difference , optometry , choroid , optics , eye disease , retina , physics
Purpose To assess the differences of the choroidal thickness(CT) according to the refractive errors using enhanced depth imaging(EDI) optical coherence tomography(OCT). Methods Ninety‐seven eyes in healthy Korean children are categorized into three groups according to the refractive errors: hyperopia(27 eyes), emmetropia(39 eyes), and myopia(31 eyes). They underwent horizontal and vertical EDI OCT scan. The CT was measured at 9 locations: fovea(F) and 1mm & 3mm nasal(N1,N3), temporal(T1,T3), superior(S1,S3) and inferior(I1,I3) area to the fovea. Statistical analysis was performed to evaluate the comparative difference of the CT at each location. Results The overall mean age was 8.2 years and there was no difference in three groups(p=0.320). The foveal CT in hyperopia was 359.41㎛ which was thicker than those in emmetropia(301.97㎛) and myopia(263.94㎛) and CT at the other 8 locations in hyperopia was thicker than in emmtropia and myopia(p<0.05). The CT at S1, T1, N1 and N3 in hyperopia was thicker than those of emmetropia(p<0.05). The CT of hyperopia was thicker than those of myopia except T3 location(p<0.05). The thickest location of three groups was fovea in hyperopia, and T3 in emmetropia and myopia which was 320.79㎛ and 291.74㎛, respectively. The thinnest location was N3 in three groups(220.22㎛ in hyperopia, 163.92㎛ in emmetropia and 151.29㎛ in myopia) Conclusion The CT of hyperopia was thicker in comparison with emmetropia and myopia, especially at nasal area between hyperopia and emmetropia and at all locations except T3 between hyperopia and myopia. The temporal choroid was thicker than the nasal choroid regardless of refractive errors, but the thickest location in hyperopia was the fovea.