Initiating and maintaining simulation-based training for ophthalmology. The infographic summarises the rationale for using simulation-based training in ophthalmology by answering the question WHY? The role players are listed under the WHO? section. The educational principles of simulation-based training are listed under HOW? and the WHAT list the simulation environments used for training. The simulation learning environment, accreditation of centres and the curriculum alignment with learners' needs are addressed under SO what? The infographic summarises the first of four articles on good practices in simulation-based education in ophthalmology, but the principles can be applied to other disciplines as well.