Choroidal thickness profile in normal Iranian eyes with different refractive status by spectral-domain optical coherence tomography

Heirani, M. and Heravian Shandiz, J. and Shojaei, A. and Narooie-Noori, F. (2019) Choroidal thickness profile in normal Iranian eyes with different refractive status by spectral-domain optical coherence tomography. Journal of Current Ophthalmology.

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Abstract

Purpose: To investigate the choroidal thickness and its association with age, gender, spherical equivalent (SE), and axial length (AL) in a sample of Iranian population with different refractive status using spectral-domain optical coherence tomography (SD-OCT). Methods: In a cross-sectional study, a total of 469 right eyes of 469 healthy subjects comprising 194 (41.4) males and 275 (58.6) females were examined. The mean age was 32.76 ± 15.77 years (range, 4–60 years). All subjects were divided into different groups according to their refractive status, age, and AL. The choroidal thickness was evaluated through enhanced-depth imaging (EDI) modality at subfoveal (Sf), 1, and 3 mm nasal (N1 and N3, respectively), temporal (T1 and T3, respectively), superior (S1 and S3, respectively), and inferior (I1 and I3, respectively) to the foveal center. Results: In the whole population, the mean subfoveal choroidal thickness (SfChT) was 329.83 ± 70.33 μm, and the choroid was thickest at S1 (342.04 ± 71.28 μm) and thinnest at N3 (209.00 ± 66.0 μm). Our data indicated a significant difference in the mean choroidal thickness across all points in different age groups (P < 0.0001). For emmetropic, myopic, and hyperopic subjects, mean SfChT values were 346.64 ± 59.63, 319.66 ± 73.17, and 364.00 ± 74.54 μm, respectively. Linear regression estimated that SfChT decreased about 12.8 and 8.71 μm for every 10 years of aging and each diopter increasing in myopia, respectively. Additionally, the SfChT decreased as 13.48 μm per mm increase in AL. Conclusions: The mean SfChT of a sample of Iranian emmetropic subjects was 346.64 ± 59.63 μm. The choroidal thickness has a decreasing trend with increasing age, and the choroid is thinner in myopes and thicker in hyperopes compared with emmetropic subjects. In the whole participants, the thickest and thinnest points were S1 and N3, respectively. © 2019 Iranian Society of Ophthalmology

Item Type: Article
Additional Information: Export Date: 16 February 2020 Correspondence Address: Heravian Shandiz, J.; Department of Optometry, School of Paramedical Sciences, Mashhad University of Medical SciencesIran; email: Heraviansj@mums.ac.ir
Uncontrolled Keywords: Choroidal thickness Enhanced-depth imaging Iran Optical coherence tomography
Subjects: WW Ophthalmology
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib1 lib1
Date Deposited: 21 Jun 2020 06:38
Last Modified: 21 Jun 2020 06:38
URI: http://eprints.mums.ac.ir/id/eprint/18410

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