Ronald de Keizer

Ronald de Keizer is a Researcher in the Department of Ophthalmology at the Faculty of Medicine, Erasmus University Rotterdam (Erasmus MC), actively contributing to clinical and translational ophthalmology research. His work spans ocular oncology, thyroid eye disease, orbital inflammatory disorders, and surgical complications, with publications in high-impact journals including Acta Ophthalmologica and Frontiers in Endocrinology.

His primary research focuses on Ocular Oncology—particularly molecular differentiation of sebaceous carcinoma from squamous cell carcinoma using microRNA biomarkers—and Thyroid Eye Disease, where he evaluates novel diagnostic assays for Graves' orbitopathy. Additional expertise includes Orbital Inflammatory Diseases like xanthogranuloma and infection control in lacrimal surgery, integrating molecular diagnostics with clinical outcomes to address critical gaps in ophthalmic care.

Recent publications (2022–2024) reveal a consistent emphasis on retrospective clinical studies and biomarker validation, featuring large-scale case analyses (e.g., 1020-patient surgical infection study) and collaborative multi-center research. Key trends include molecular diagnostics for ocular cancers, refinement of thyroid eye disease testing protocols, and long-term management strategies for rare orbital conditions, demonstrating methodological rigor and clinical relevance.

No scientific awards or honors were documented in the available profile.

While specific student advising roles and grant funding details are not explicitly stated, his collaborative publication record—including frequent co-authorship with endocrinologists, pathologists, and immunologists—suggests active mentorship within Erasmus MC's research ecosystem and potential involvement in externally funded projects.

Dr. de Keizer operates within a robust multidisciplinary network at Erasmus MC, partnering with specialists across ophthalmology, endocrinology, and pathology departments. His research infrastructure supports international collaborations, as evidenced by co-investigator roles in studies spanning diagnostic assay development, orbital tumor management, and surgical safety protocols, reflecting strong institutional integration.