The Evaluation of the Relation Between Iris and Choroidal Thickness.

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 μm (IT750T) and 2000 μm (IT2000T) from the temporal scleral spur. The iris thickness was measured at 750 μm (IT750N) and 2000 μm (IT2000N) from the nasal scleral spur. Choroidal thickness was measured by optical coherence tomography. Choroid thickness was measured at 750 μm (CT750N, CT750T) and 2000 μm (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.