Superiority complex? It is complexAssociate Professor Susan Carden examines the RAINBOW study, which compared treatment of ROP with ranibizumab versus laser therapy. Noting the extension trial may uncover more, there might be a superior treatment method. Listen in to find out more.View article here Susan Carden is an Associate Professor in the Department of Pediatrics, University of Melbourne.  She is a Consultant Ophthalmologist RCH and is head of the Education Vision Assessment Unit, RVEEH. She currently chairs the Victorian Branch, RANZCO.  Her areas of expertise includes retinopathy of prematurity, Low Vision, paediatric ophthalmology and general ophthalmology and international development.