Optical coherence tomography angiography of diffuse unilateral subacute neuroretinitis.

Purpose: Diffuse unilateral subacute neuroretinitis (DUSN) is often a challenging diagnosis to make. We present a DUSN case with its multimodal imaging to aid in the diagnosis, emphasizing the observations on optical coherence tomography angiography (OCTA).

Observations: The evolution of a DUSN case is presented. Fundus photography and OCTA aided in the identification of the nematode.

Conclusions and importance: DUSN is a difficult diagnosis to establish. We report the first case to our knowledge in which OCTA aided in the diagnosis of DUSN.