This research focuses on the development of a capacitive pressure sensor integrated into a contact lens for continuous monitoring of intraocular pressure (IOP), a critical parameter for the early detection and management of glaucoma.

The sensor operates on capacitive sensing principles, where fluctuations in IOP alter the distance between sensor plates, resulting in measurable changes in capacitance. Pressure variations within the physiological range of 10–25 mmHg were analyzed to evaluate the sensor's performance and ensure accurate pressure readings. The sensor was also optimized to detect changes in the range of 2–5 mmHg. COMSOL Multiphysics simulations provided detailed insights into the sensor’s durability, sensitivity, and performance by analyzing capacitance variations and electric field intensity. Laboratory experiments simulated IOP changes under realistic conditions to assess the sensor's accuracy and reliability. Unlike traditional methods, often limited to clinical environments, this approach offers a continuous, real-time solution for monitoring IOP.

This system addresses current diagnostic limitations by enabling earlier and more precise interventions in glaucoma care. Integrating the sensor into a contact lens allows for practical and patient-focused solutions, helping reduce the risk of vision loss. This project also contributes to advancements in wearable biomedical technologies and paves the way for broader applications in continuous health monitoring.