Abstract
Purpose: To report the characteristics and prevalence of a previously undescribed circular perivascular fundus autofluorescence (FAF) pattern in paraneoplastic and nonparaneoplastic autoimmune retinopathy. Methods: This retrospective case series used clinical and imaging data extracted from charts of patients with autoimmune retinopathy in whom FAF imaging was performed from the initial presentation to the last visit. Results: Six of 25 patients with autoimmune retinopathy and FAF imaging developed circular perivascular FAF changes. Three patients had paraneoplastic autoimmune retinopathy, and 3 had nonparaneoplastic autoimmune retinopathy. The lesions appeared a mean of 25 months after symptom onset; however, the timing varied from months to years and did not correlate with the overall disease course. The lesions were initially typically hyperautofluorescent and varied in progression, distribution, and quality. Optical coherence tomography showed hyperreflective subretinal deposits in the corresponding areas in most patients. Conclusions: To our knowledge, these are the first reported cases with this circular perivascular FAF pattern in nonparaneoplastic autoimmune retinopathy. This finding could also be a useful diagnostic imaging marker in some patients with autoimmune retinopathy.
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