Elevated laser flare values correlate with complicated course of anterior uveitis in patients with juvenile idiopathic arthritis

Purpose: To evaluate the prognostic value of anterior chamber (AC) laser flare (LF) in uveitis associated with juvenile idiopathic arthritis (JIA). Methods: Monocentre, retrospective study of 150 JIA children (girls n = 107, 71.3%) with unilateral or bilateral chronic anterior uveitis (statistical analysis of one eye per patient). LF values (KOWA FM‐500), visual acuity, intraocular pressure, glaucoma treatment and uveitis complications were investigated longitudinally. Results: Patients were followed up for a mean of 8.7 months (range 1–36). High LF values correlated with poor visual acuity (p < 0.0001). Patients with low LF values (LF ≤ 20 photon units per millisecond) less often required glaucoma medication (p = 0.0005) or surgery (p = 0.01) and showed a lower prevalence of cataract, band keratopathy, posterior synechiae, epiretinal membrane, optic disc oedema and glaucoma/ocular hypertension (p < 0.05, each). Baseline LF > 20 photon units per millisecond was a better prognosticator for the development of subsequent complications than baseline AC cells (p = 0.04). Conclusions: High LF values in patients with JIA uveitis are associated with poor vision and a higher prevalence of uveitis complications.