ABSTRACT
Purpose: To assess the choroidal vascularity index (CVI) in birdshot chorioretinopathy (BSCR) patients.
Methods: The CVI was calculated as the ratio of luminar area to the total subfoveal choroidal area on enhanced-depth imaging optical coherence tomography. Intraocular inflammation was defined by the presence of macular edema and/or vitritis and/or vasculitis and/or papillitis.
Results: Eighty BSCR patients and 22 healthy controls were included. Foveal choroidal thickness was lower in the BSCR compared with the control group (p < 0.001). CVI was not different between the two groups. CVI was significantly higher in BSCR patients with inflammatory activity (p = 0.004). Using a multivariate linear regression model, longer disease duration was associated with lower CVI (p = 0.038), whereas the presence of papillitis was associated with a higher CVI (p = 0.003).
Conclusions: The CVI was not different between the BSCR and the control group. However, the CVI may be used as a new tool for monitoring inflammatory activity in BSCR.
DECLARATION OF INTEREST
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.