Formulation and Evaluation of In-Situ Gel for the Treatment of Wet Age-Related Macular Degeneration

Wet age-related macular degeneration (wet AMD) is a prevalent retinal disease characterized by abnormal growth of blood vessels beneath the macula, leading to vision loss. Current treatment modalities such as intravitreal injections pose challenges related to frequent administration and potential complications. In-situ gel formulations offer a promising alternative for sustained drug delivery directly to the affected site. This review discusses the formulation strategies and evaluation parameters for in-situ gels designed for the treatment of wet AMD, highlighting their potential advantages and challenges. Key factors influencing the gel properties, including gelation mechanism, biocompatibility, and drug release kinetics, are elucidated. Furthermore, recent advancements in polymer science and nanotechnology have enabled the development of innovative formulations with enhanced therapeutic efficacy and patient compliance. Future directions in research and clinical applications of in-situ gels for wet AMD management are also addressed, emphasizing the need for comprehensive preclinical and clinical studies to validate their safety and efficacy.