The ICO-Ophthalmology Surgical Competency Assessment Rubric (ICO-OSCAR) is a standardized, internationally-valid tool to teach and assess an ophthalmologist’s competence in performing surgery. This behavioral and skill-based rubric for evaluators, allows the evaluator to use the ICO-OSCAR to objectively assess the resident’s competence in performing a specific procedure. It also gives the resident a tool to better gauge their own performance.