Aplicação do Lean Healthcare na otimização do fluxo de agendamento cirúrgico em um serviço universitário de retina e vítreo

This study evaluated the acceptance of the Lean methodology (waste-reduction management) in the surgical scheduling process of the Retina Sector at UNIFESP. The research analyzed six months of administrative data and applied pre- and post-intervention questionnaires to the 10 employees of the department. The main results were: Identified problems: Waste of time and resources, with a 19.18% patient absenteeism rate and 18.45% of follow-up visits. Proposed solution: Use of visual management and workflow leveling tools (such as Kanban) to reduce bureaucracy and improve service delivery. Encountered barrier: The proposal faced low acceptance by the administrative staff, due to the professionals' long tenure and preference for consolidated manual routines. The study concludes that improving efficiency in public university hospitals requires more than applying technical tools; it demands participative leadership to engage employees and overcome cultural resistance to innovation. (Research approved by the Research Ethics Committee, CAAE No. 17379619.8.0000.5505).