Fig. 2

Foveal and parafoveal retinal thickness of normal healthy people in both genders in different age groups. Overall, males exhibit greater foveal retinal thickness compared to females. This gender difference persists in parafoveal RT measurements across all age groups except the youngest cohort. However, when examining individual retinal layers, thickness variations between genders become negligible. A. Mean foveal WRT is higher in males compared to females. Females exhibit greater variability over time. B. Changes in foveal IRT follow a similar pattern to WRT (as described in A). C. In foveal MRT, the first three age groups show comparable trends and values between sexes, but after age 40, thickness decreases in females. D. In foveal ORT, thickness is slightly lower in females than in males, except in the youngest age group. E. For parafoveal WRT, males have higher values than females in all age groups except the second. F. In parafoveal IRT, trends and values are similar between sexes, but females have lower values except at the extreme ages. G. In parafoveal MRT, values and trends are comparable across all age groups except the oldest, where differences emerge. H. In parafoveal ORT, the first two age groups show comparable values between sexes, but thereafter, females have slightly loweramounts. Abbreviations: IRT, inner retinal thickness, MRT, middle retinal thickness; ORT, outer retina thickness; WRT, whole retinal thickness