Inventory management of intraocular lenses under geopolitical instability

Objective: to develop and scientifically validate the feasibility of applying a lean intraocular lens (IOL) inventory management system under conditions of geopolitical instability. Material and methods. The study consisted of the steps of analyzing the distribution of IOL optical power, creating a mathematical model of the institution's need for lOLs, implementing the developed system, and evaluating its effectiveness under geopolitical instability from January 2022 to December 2023. Results. As a result of implementing the proposed approach, the volume of IOL purchases made in addition to planned orders decreased from 4.5% of requests in 2014-2015 to 0.2% in 2022-2023 (p<0.001). The inventory management system steadily ensured the availability of lOLs of the required optical power, facilitated organizational decision-making, eliminated the need for orders for urgent delivery and exchange of lOLs with the supplier, freed up labor resources and contributed to the availability of specialized medical care for cataract patients during the period of disruption of previously established logistics chains. Conclusion. The developed lean system of IOL inventory management demonstrated high efficiency, saving labor and material resources of the medical organization, ensuring the continuity of the treatment process and resisting the risks associated with geopolitical instability in the world.