The Evaluation of the Relation Between Iris and Choroidal Thickness

Abstract

Purpose: The study aimed to investigate the relationship between iris thickness (IT) and choroidal thickness (CT) in healthy subjects. Materials and Methods: Forty-five healthy participants (24 women, 21 men) aged 18-62 years were included in the study. The iris thickness was measured by anterior segment optical coherence tomography (AS-OCT). The iris thickness was measured at 750 mu m (IT750T) and 2000 mu m (IT2000T) from the temporal scleral spur. The iris thickness was measured at 750 mu m (IT750N) and 2000 mu m (IT2000N) from the nasal scleral spur. Choroidal thickness was measured by optical coherence tomography. Choroid thickness was measured at 750 mu m (CT750N, CT750T) and 2000 mu m (CT2000N, CT2000T) from the center of the fovea on both the nasal and temporal sides. Results: There were significant correlations between CT750T and IT750T, IT750N, IT2000N (r = 0.409, p=0.005; r = 0.396, p=0.007; r = 0.329, p=0.02, respectively). There were significant correlations between CT2000T and IT750T, IT750N, IT2000N (r = 0.383, p=0.009; r = 0.478, p=0.001; r = 0.331, p0=0.02, respectively). Conclusions: There was a significant correlation between CT and IT thicknesses at different points.