Refractive error and ocular parameters: comparison of two SD-OCT systems

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Lisa A OstrinChristine F Wildsoet

Abstract

Spectral domain optical coherence tomography (OCT) was used to examine the influence of refractive error (RE) on foveal retinal and choroidal thicknesses and scleral canal width (SCW). The performance of the Cirrus and Bioptigen spectral domain OCT instruments was compared in the same eyes. Both eyes of 40 healthy human subjects, aged 22 to 38 years, were dilated and imaged, with the Cirrus OCT, using 6-mm five-line rasters collapsed into one line, one centered on the fovea and one bisecting the optic nerve head. Seventy-two of the same eyes were imaged with the Bioptigen OCT, using 6- by 6-mm scans, one centered on the fovea and one on the optic nerve head. Subfoveal retinal and choroidal thicknesses and SCW were measured. Axial lengths (ALs) and REs were obtained using an IOLMaster and a Grand Seiko autorefractor, respectively. Only right eyes were included in analyses. Spherical equivalent REs ranged from -12.18 to +8.12 diopters (mean [±SD], -3.44 [±4.06] diopters), and ALs ranged from 20.56 to 29.17 mm (mean [±SD], 24.86 [±1.91] mm). Myopia was associated with relatively thin choroids at the fovea (p < 0.05) but normal retinal thickness. Scleral canal width was significantly correlated with AL as measured with the Bioptige...Continue Reading

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Citations

Jul 20, 2018·Investigative Ophthalmology & Visual Science·Avinash V VaradarajanDale R Webster
Jun 14, 2020·Archivos de la Sociedad Española de Oftalmología·M M Esteban-OrtegaUNKNOWN de parte del grupo de estudio del Grosor Coroideo en Espondilitis Anquilosante (COnTEST)

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