Paolo M, Marta Z, Stefania F, et al. - Researchers conducted this retrospective cohort study to assess the effect of selected clinical parameters on the mid-/long-term visual outcome of patients with acute retinal necrosis (ARN). The sample consisted of 39 non-HIV patients (22 men and 17 women; mean age, 50 years) {39 eyes} with ARN, as confirmed by polymerase chain reaction on intraocular samples. Using linear regression models, the following potential predictors were tested: age, gender, etiology, best-corrected visual acuity (BCVA) on admission, the delay between ARN symptom onset and treatment initiation, and surgery (performed or not). According to findings, initial BCVA and treatment delay appear to be significant predictors of mid-/long-term visual outcome in ARN-affected non-HIV patients.