The British Ophthalmological Surveillance Unit restart

After a six month break, The British Ophthalmological Surveillance Unit has restarted case ascertainment from November 2020, recommencing the yellow card reporting system with the five studies that were already running. BOSU: Current Studies on the Yellow Card Study Lead investigator Hydroxychloroquine Retinopathy Imran Yusuf, Oxford Unexplained visual loss following removal of silicone oil Jonathan