In this episode we look at two very interesting papers published in the latest editions of Ophthalmologica – Martin Busch (Germany) presents his work on using microRNA as biomarkers for retinal disease and the panel discuss Christina Weisheit’s paper on Co2 emissions from the ophthalmic OR. Chaired by Patricia Udaondo (Spain), Matias Iglicki (Argentina) and Andreas Ebneter (Switzerland).