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  • Title: Functional visual loss.
    Author: Dhanji S, Lawlor M.
    Journal: Curr Opin Neurol; 2017 Apr; 30(2):200-205. PubMed ID: 28141741.
    Abstract:
    PURPOSE OF REVIEW: Functional visual loss (FVL) is a syndrome in which subjective visual parameters are inconsistent with objective measures. Recent advances in understanding the pathophysiology and management of functional disorders and FVL will be explored. RECENT FINDINGS: FVL requires a positive diagnosis of normal function through clinical examination or visual electrophysiology. A substantial proportion of patients have an underlying organic illness that needs to be identified and treated. Recent updates in Diagnostic and Statistical Manual of Mental Disorders-5 reflect the observation that many patients with FVL do not have a recognizable psychological association. A small number of functional neuroimaging studies suggest that there may be a stress-mediated prefrontal suppression of visual awareness. There is limited evidence to guide the treatment of FVL; education and reassurance remain first line, followed by cognitive behavioral therapy and pharmacotherapy for psychiatric comorbidities. SUMMARY: FVL remains a poorly studied and understood condition. Recent advances in the understanding and management of functional symptoms more generally may aid in advancing the understanding of this condition.
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