Smart Contact Lenses for Health Monitoring – Innovations in Personalized Medicine

Aims: This review provides a comprehensive analysis of the current advancements and future potential of smart contact lenses (SCLs) in personalized medicine. It examines their applications in diagnostics, continuous health monitoring, and therapeutics while addressing the technical, regulatory, and clinical challenges that must be overcome for widespread clinical adoption. Methods: A systematic literature review was conducted using PubMed, IEEE Xplore, ScienceDirect, and Google Scholar. Seventeen peer-reviewed articles were selected based on their relevance, novelty, and applicability to smart lens technology. The selected studies were categorized into five thematic areas: biomarker detection, real-time health monitoring, materials and power systems, therapeutic applications, and commercialization challenges. Results: Smart contact lenses have demonstrated significant potential in non-invasive, real-time monitoring of biomarkers such as glucose, intraocular pressure (IOP), and inflammatory proteins through tear analysis. Additionally, they enable controlled drug delivery for conditions like glaucoma and dry eye syndrome. Key technological advancements include integrated biosensors, wireless data transmission, and energy-efficient power solutions. However, challenges such as sensor miniaturization, long-term biocompatibility, stable energy supply, regulatory hurdles, and cost-effective mass production remain critical obstacles to their clinical implementation. Conclusions: Smart contact lenses are emerging as a transformative tool in digital healthcare, enabling continuous patient monitoring and personalized therapeutic interventions. Future research directions should focus on AI-driven analytics, energy harvesting solutions, and multi-biomarker detection to enhance their clinical utility. Successful integration into mainstream medicine will require interdisciplinary collaboration, regulatory standardization, and advancements in scalable manufacturing techniques.