Lower fractal dimension of retinal vessel for patients with Birdshot chorioretinopathy.

Purpose: To identify the retinal vessel vasculature parameters associated with birdshot chorioretinopathy (BSCR).

Methods: This retrospective observational study included 28 prevalent cases of BSCR with a median time from diagnosis of 6 years and 28 controls matched for age, arterial hypertension, diabetes and refraction. Forty-five-degree fundus images of both dilated eyes were acquired with a fundus camera (Canon CR-2, Tokyo, Japan).