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  • Title: Therapeutic window of opportunity in the acute uveitic phase of Vogt-Koyanagi-Harada disease: Prevention of late autoimmune complications by early intervention.
    Author: Abu El-Asrar AM, Al Rashed FA, AlBloushi AF, Tobaigy MF, Gikandi PW, Herbort CP, Opdenakker G.
    Journal: Acta Ophthalmol; 2023 Mar; 101(2):e236-e245. PubMed ID: 36128841.
    Abstract:
    PURPOSE: To determine relationship between timing of treatment initiation and disease outcomes and whether a therapeutic window of opportunity exists in initial-onset acute uveitis associated with Vogt-Koyanagi-Harada disease. METHODS: Retrospective analysis of 112 patients (224 eyes). Main outcome measures were final visual acuity, progression to chronic recurrent evolution, development of complications, particularly 'sunset glow fundus', and drug-free remission cure of uveitis. RESULTS: Forty-six patients (92 eyes) presented in the phase preceding anterior segment (AS) inflammation (early presentation) and 66 patients (132 eyes) had AS inflammation at presentation (late presentation). In significantly more eyes in the early presentation group (85.9%), final visual acuity of 20/20 was achieved compared with those in the late presentation group (66.7%) (p = 0.001). None of the eyes in the early presentation group progressed to chronic recurrent evolution and none developed 'sunset glow fundus', whereas in the late presentation group, 28.8% of the eyes progressed to chronic recurrent evolution (p < 0.001) and 56.1% developed 'sunset glow fundus' (p < 0.001). Patients in the early presentation group were able to discontinue treatment without relapse of inflammation at significantly shorter time intervals compared to patients in the delayed presentation group (p < 0.001). In the late presentation group, logistic regression analysis demonstrated that presenting clinical features predicting unfavourable outcomes were posterior synechiae (odds ratio = 4.03; 95% confidence interval [CI] = 1.29-12.23), bullous exudative retinal detachment extending to the periphery (odds ratio = 3.35; 95% CI = 1.53-7.32) and female gender (odds ratio = 2.05; CI = 1.08-3.90). CONCLUSIONS: Our findings suggest that the window of opportunity lies in the phase preceding AS inflammation and initiation of effective treatment during this phase results in cure of uveitis and prevents blinding complications.
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