Recurrent Anterior Uveitis Associated with Major Fluctuations in Choroidal Thickness in Patient with Pachychoroid Disorder.

PURPOSE: To describe remarkable choroidal thickness fluctuations corresponding to episodes of recurrent anterior uveitis with subretinal fluid development when exceeding a choroidal thickness threshold. METHODS: A patient with pachychoroid pigment epitheliopathy and unilateral acute anterior uveitis of the left eye was evaluated over a period of 3 years with multimodal retinal imaging including optical coherence tomography (OCT). Longitudinal changes in subfoveal choroidal thickness (CT) were measured and correlated with episodes of recurrent inflammation. RESULTS: Over the course of 5 recurrent episodes of inflammation in the left eye treated with oral antiviral and topical steroid therapy, subfoveal CT increased as much as 200 um or more. Subfoveal CT in the fellow quiescent right eye by contrast, was within normal limits and minimally changed throughout the follow up. Increased CT occurred with each episode of anterior uveitis and decreased by 200 µm or more during periods of quiescence in the affected left eye. Subretinal fluid and macular edema developed with a maximum CT of 468 um and spontaneously resolved when CT decreased after treatment. CONCLUSION: In eyes with pachychoroid disease, anterior segment inflammation may lead to marked increases in subfoveal CT and the development of subretinal fluid at a threshold thickness value.