This course aims to develop the habit of questioning recieved wisdom, by approaching ideas, concepts and techniques in Optometry and elsewhere with a critical mind, searching for and critiquing any supporting evidence, and being aware of the ethical issues involved in evidenced-based Optometry. The course is run in a multi-mode format, partly by distance , and partly on-campus. Topics discussed in this course include: The nature of evidence, how we find it, how we evalute it, and how we use it; Ethics of using evidence; The role of statistics in generating and presenting evidence; The use of evidence in Optometry.