Decreased choroidal vascularity index and subfoveal choroidal thickness in vitamin D insufficiency.

Background: To present the effects of vitamin D insufficiency on the choroidal vascularity index, central choroid and central macula.

Methods: 42 eyes of 42 patients with vitamin D insufficiency and 51 eyes of 51 age- and sex-matched healthy subjects were included in this retrospective, cross-sectional, and comparative study. The macular layer was examined using the retinal mapping mode of the spectral domain Optical coherence tomography (Optovue RTVue XR, Optovue Inc.