This chapter provides an in-depth exploration of the industrial processes and innovations that underpin the manufacturing of contact lenses. It begins with an overview of the journey from conceptual design to precision-engineered lenses, highlighting the critical factors that shape lens diameter, base curve, and optical zone for optimal performance. Key manufacturing techniques, including lathe-cutting, cast molding, and spin casting, are discussed with a focus on automation, precision, and scalability. The chapter also examines the challenges of quality control and defect prevention, emphasizing the importance of stringent standards and regulatory compliance to ensure product reliability. Advances in packaging and sterilization methods, such as aseptic filling and gamma radiation, are detailed as essential steps for maintaining lens sterility and user safety. A significant portion of the chapter is dedicated to recent technological innovations, including the integration of UV LED curing and advanced automation in lens production. These breakthroughs have revolutionized manufacturing efficiency and expanded the capabilities of contact lens design. By presenting a comprehensive view of the industrial landscape, this chapter underscores the intricate processes that drive the creation of high-quality contact lenses and highlights the continuous efforts to innovate and improve production methods.