Portable Non-Contact Device for Measurement of Home-Based Eye Measurement Tonometer

Glaucoma is a major cause of irreversible blindness, predominantly linked to elevated intraocular pressure (IOP), which damages the optic nerve. Early detection and management depend on regular IOP monitoring. Conventional tonometers that require direct contact with the cornea face challenges such as discomfort, infection risks, and dependence on clinical visits. To address these issues, this study introduces a portable, non-contact tonometer utilizing a Passive Infrared (PIR) sensor for improved accuracy in IOP measurement. Unlike traditional infrared (IR) sensors, which have precision limitations, PIR sensors detect infrared radiation variations more effectively, enhancing pressure estimation. The device also incorporates a Wi-Fi module for cloud- based data storage, facilitating remote monitoring by healthcare providers and improving patient accessibility. Designed as a cost-effective and user-friendly solution for home-based IOP measurement, this system aims to alleviate the burden on patients and healthcare facilities. Future research will focus on calibrating the device against gold- standard tonometry methods and conducting clinical validation to ensure reliability[1],[2].