Choroidal thickness in healthy Turkish subjects

Aim: To investigate choroidal thickness in healthy Turkish subjects. Materials and methods: Refraction, axial length (AXL) measurement, anterior chamber, and fundus examinations were performed. Eyes that had any retinal or choroidal pathology were excluded from the study. Enhanced-depth imaging optical coherence tomography was used to evaluate choroidal thickness. Results: 139 eyes from 70 subjects were investigated. The mean age, AXL, spherical equivalent refractive error (SE), and subfoveal choroidal thickness (SCT) were 32.9 ± 11.6 years, 23.31 ± 0.91 mm, –0.15 ± 1.64 diopters (D), and 326 ± 60 μm, respectively. A negative correlation was found between SCT and AXL (P = 0.043). The mean age, SE, AXL, and SCT were 31.7 ± 9.3 and 34.6 ± 14.3 years, –0.27 ± 1.45 and 0.02 ± 1.89 D, 23.52 ± 0.94 and 23.02 ± 0.75 mm, and 324 ± 69 and 329 ± 40 μm in male and female subjects, respectively (P = 0.14, P = 0.31, P = 0.001, and P = 0.58, respectively). Regression analysis showed that SCT decreased by 0.93 μm for each year of age. Conclusion: In healthy Turkish subjects, SCT decreased by 0.93 μm for each year of age and was thicker in men when the results were adjusted according to AXL measurements.