To investigate the association between subfoveal choroidal thickness and ocular axial length, refractive error, and blood pressure in healthy young women and men.
Cross-sectional observational study of 93 eyes in 93 healthy Danish university students (mean age 24.9 ± 2.6 years). The submacular choroid was imaged using enhanced-depth imaging spectral domain optical coherence tomography. Subfoveal choroidal thickness was measured by visual inspection and manual fitting of the choroidal borderlines. Study parameters included history, best corrected visual acuity, objective refraction, interferometric ocular axial length, fundus photography, and blood pressure manometry.
The mean subfoveal choroidal thickness was 342 (±118) µm, the mean age was 24.9 (±2.6) years and the mean refractive error of participants was -1.43 (±2.9) diopters (D). In a multiple regression model, subfoveal choroidal thickness decreased by 58.2 µm (95% confidence interval [CI], 42.2-74.2 µm; P