I plan to provide a general overview of the Sight Outcomes Research Collaborative (SOURCE) Ophthalmology Big Data consortium. Topics I plan to cover include the ophthalmology departments who are actively participating in SOURCE, the sorts of data elements that are available to researchers, linking clinical data in SOURCE with other pots of data such as social determinants of health data, how one can gain access to SOURCE data for research or quality improvement projects. Information on the numbers of patients in SOURCE and the sociodemographic characteristics of these patients will be covered. In addition, I will cover some of the challenges with creating multi‐ institution registries like SOURCE. Finally, I will provide a few examples of research projects that are making use of this resource.