Risk factors for subretinal fibrosis in patients with Vogt Koyanagi Harada syndrome.

Purpose: To identify the risk factors for the development of subretinal fibrosis (SRF) among patients with Vogt-Koyanagi-Harada (VKH) syndrome.Methods: In this case-control study, electronic clinical records from patients diagnosed with VKH syndrome who attended the Inflammatory Eye Disease Clinic at a tertiary care ophthalmology reference center were assessed to identify risk factors from demographic, clinical, and epidemiological variables. Cases were defined as SRF and VKH, whereas the controls were VKH patients without SRF.Results: A total of 150 electronic charts were reviewed, 92 patients with a follow-up longer than 12 months were included; 39 cases and 53 controls. A multivariate analysis found bullous serous retinal detachment as a significant risk factor for SRF (adjusted OR 8.93, 95% CI 1.94-41.1).Conclusion: Patients with VKH syndrome who develop a bullous retinal detachment have an 8 times higher risk of developing SRF in the long term.