Relapsing Uveitis due to Human T-lymphotropic Virus Type 1 in a Patient Living With HIV Diagnosed by Metagenomic Deep Sequencing.

HIV infection can result in vision loss from different causes, including HIV retinopathy and uveitis secondary to other infections, such as toxoplasmosis and viral retinitis. It is imperative to identify any infectious causes of uveitis to successfully treat the condition and prevent further vision loss. Metagenomic deep sequencing (MDS) is an emerging technology that presents an unbiased approach to the evaluation of clinical syndromes, including uveitis, that have not been diagnosed by pathogen-specific testing. Herein we present a case of a woman living with HIV with 11 years of relapsing bilateral uveitis refractory to systemic corticosteroid therapy who was diagnosed with human T-lymphotropic virus type 1 (HTLV-1)-associated uveitis by this technology. We also briefly review the literature of MDS as a diagnostic tool and the epidemiology, pathogenesis, and diagnosis of HTLV-1-associated uveitis.