Fig. 1

Foveal and parafoveal vascular densities of normal healthy people in both genders in different age groups. The figure reveals pronounced gender-based disparities in foveal SVD and DVD measurements. In contrast, parafoveal SVD and DVD exhibit negligible intergender differences. A. Foveal SVD is higher in males across all age groups compared to females except in the final age group, following similar trends of increase and decrease. B. Foveal DVD in females shows a more variable course than in males. C. Foveal CVD in the choroid follows a similar course and magnitude in both males and females. D. Parafoveal SVD exhibits comparable trends and values in both groups, with minimal changes over time. E. Parafoveal DVD demonstrates a more stable course than foveal DVD. Except in the youngest age group, females generally have higher density in this region. F. Although parafoveal CVD is higher in males in the first age group, after age 40, the values become comparable between sexes. Abbreviations: SVD, superior vascular density; DVD, deep vascular density; CVD, choroidal vascular density