Supplementary Material for: Atypical central serous chorioretinopathy masquerading as Vogt-Koyanagi-Harada disease: a case report.

Introduction:
We aimed to describe a clinical presentation of central serous retinopathy that poses a diagnostic and management dilemma.

Case presentation:
A 30-year-old male patient presented with bilateral vision loss and multifocal serous retinal detachments involving the posterior pole of both eyes. Optical coherence tomography revealed prominent bilateral bacillary layer detachments. The patient complained of recent headaches and tinnitus. However, the clinical exam did not reveal overt inflammation and the patient admitted to being under significant stress. The clinical presentation raised concerns for both central serous retinopathy (CSR) and Vogt-Koyanagi-Harada (VKH). Additional findings, including white fundus spots and focal areas of retinal vascular leakage, were seen in our patient. We highlight these because, while they have been described in CSR, they are not commonly discussed and could add to the diagnostic dilemma. After a conservative approach that avoided steroids, our patient showed marked improvement over the following month, supporting a diagnosis of central serous retinopathy.

Conclusion:
Central serous retinopathy can mimic Vogt-Koyanagi-Harada disease. A high level of suspicion is needed to avoid instituting steroid therapy that could induce a severe iatrogenic exacerbation of the disease.