Ocular sarcoidosis typically presents either to the uveitis or neuro-ophthalmic service, depending on the compartment affected. Here we present a case of a 70-year-old woman who developed profound right eye visual loss to hand movements over two weeks with unilateral disc swelling and optic neuropathy. OCT demonstrated the dynamics of vertically migrating intraretinal hyperreflective foci, subretinal fluid, choroidal thickening and vitreous haze. Intracranial and orbital imaging, blood tests, lumbar puncture and whole-body PET MRI excluded neoplastic, infiltrative, inflammatory, infectious and known auto-immune causes. Treatment with corticosteroids led to rapid improvement of symptoms and the final visual outcome was good: pinhole acuity 0.3 with 10/17 Ishihara plates correctly identified, though a central scotoma remained. A literature review suggests that intraretinal sarcoidosis may be a novel, OCT-supported manifestation of this systemic disease. OCT permits dynamic monitoring of the inflammatory response on a cellular level between three adjacent compartments. These findings highlight the importance of multidisciplinary management of sarcoidosis, with OCT as a central part of the standard work-up.