Advancements in the chemistry of contact Lenses: Innovations and applications

The field of contact lenses has undergone significant advancements, driven by innovations in materials science and chemistry. This review provides a comprehensive overview of the key developments in the chemistry of contact lenses, tracing the evolution from early designs to modern high-performance materials. It explores the fundamental chemistry of polymer materials, the introduction of hydrogels and silicone hydrogels, and the impact of surface chemistry on lens wettability and comfort. The review also delves into innovative materials and technologies, such as biocompatible materials, smart contact lenses, and lenses with UV-blocking and photochromic properties. Manufacturing processes, including casting, molding, and surface treatments, are discussed in detail. Furthermore, the review highlights functional enhancements like antimicrobial coatings and drug-delivery systems, along with environmental and safety considerations. Clinical implications and applications are examined, with a focus on vision correction, therapeutic uses, and future directions. The article concludes by addressing current challenges and potential research directions in the chemistry of contact lenses.