Abstract / Summary Currently, supervised surgical training provides only a small fraction of surgical experience in the career of a practicing surgeon. Surgeons’ skill develops throughout their career. Surgeons benefit from supervised feedback from experts during training, but they lose such structured and specific feedback once they begin independent practice. Surgical skill is associated with patient outcomes. Therefore, supporting surgeons’ continuous professional learning through automated structured resources can improve patient care. The status quo for surgeons in practice is to measure patient outcomes or other process of care variables as indirect measures of their skill. These measures do not inform surgeons how to improve. The goal in this project is to develop tools to analyze videos of the surgical field to provide surgeons with unbiased skill assessments and specific feedback on how to improve. This project includes integration of these tools into a personalized surgical learning platform and evaluation of its effectiveness for surgeons’ skill acquisition. To achieve this goal, this project includes a multi-disciplinary team to include expertise in ophthalmology, surgical education, surgical data science, computer vision, machine learning and deep learning, statistics, and human-computer interaction. The video analysis tools developed in this project will enable the following for cataract surgery, one of the most common surgical procedures in the U.S. and across the world: 1) objective assessments of surgeons’ skill; 2) provide surgeons with specific feedback on how to improve that is personalized given their past performance; and 3) preliminary evidence of effectiveness of a personalized learning platform for surgeons’ skill acquisition. The anticipated impact of our work is to create a pathway in which the surgeon is incentivized to see themselves and their performance as part of the process of improving outcomes and value in care, and institutions have access to objective tools to create reproducible standards for surgical competency.