Cystoid Macular Oedema in a Patient Treated with STING Agonist and Ezabenlimab for Disseminated Melanoma

We describe a case of cystoid macular oedema associated with combination treatment using a STING agonist and ezabenlimab for disseminated melanoma. A 66-year-old male patient presented with worsening vision and cystoid macular oedema in the right eye, along with a small accumulation of subretinal fluid in the left eye. The patient has been undergoing treatment for melanoma since 2014. Five months prior to the ocular presentation, the patient was enrolled in a first-in-human trial with a STING agonist and ezabenlimab. Topical treatment with dexamethasone 0.1