Diffuse bilateral subacute neuroretinitis - First patient with documented nematodes in both eyes

Objective: To describe the first patient with documented evidence of diffus e unilateral subacute neuroretinitis (DUSN) in both eyes. Methods: A 10-year-old healthy Brazilian girl was first seen with signs of late-stage DUSN in both eyes. A careful search for a nematode was performed in each eye. Results: A motile 550- to 660-mu m nematode was found in the inferotemporal retina of the left eye, A similar-sized motile nematode was found in the s uperotemporal retina of the right eye. Both nematodes were treated with arg on green laser applications with bilateral improvement of visual function. Conclusion: Although most patients with DUSN do not develop the disease in the fellow eye, this case demonstrates that DUSN can occasionally affect bo th eyes.