Eco-Medical Physics: Laser Applications in Environmental and Health Sciences is an interdisciplinary work that bridges environmental science and medical physics through the innovative use of laser technologies. The book explores the fundamental principles of lasers and their extensive applications in environmental monitoring, medical diagnostics, and therapeutic practices. It highlights how lasers are employed in assessing air, water, and soil quality, providing precise tools for pollution tracking and sustainable ecosystem management. In the medical field, the text discusses advanced diagnostic methods such as Optical Coherence Tomography, photoacoustic imaging, and fluorescence-based techniques that aid in early disease detection. Therapeutic applications, including laser surgery and photodynamic therapy, are examined for their role in improving patient outcomes. The book also addresses the environmental impacts of laser technologies, emphasizing sustainability, regulatory concerns, and safety practices. With detailed case studies and interdisciplinary approaches, it showcases how eco-friendly innovations in laser science contribute to both health improvement and environmental protection. By integrating science, technology, and ethics, this volume presents a holistic perspective on the future of eco-medical physics. It is an essential reference for researchers, practitioners, and students interested in the growing convergence of physics, medicine, and environmental science.