Diffuse Unilateral Subacute Neuroretinitis With Unusual Findings

Purpose To report two cases of diffuse unilateral subacute neuroretinitis (DUSN) with unusual findings. Design Observational and interventional case series. Methods Two patients with DUSN were found to have the unusual findings of a large live worm in one eye and macular cyst in the other. Both patients underwent fundus fluorescein angiography and optical coherence tomography. Results Photocoagulation to the worm was performed in one patient; the other received a course of oral albendazole. Both remained stable over six months of follow-up. Conclusions We report a case of DUSN due to a worm, the large size of which suggests it to be different from the usual reported causative agents. We also report macular cyst as an associated finding in DUSN.