A Biocompatible Microfluidic Sensor for Intraocular Pressure Monitoring.

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Microfluidics

Background:

• Glaucoma is a leading cause of blindness globally, requiring regular intraocular pressure (IOP) monitoring.
• Current IOP measurement methods are inconvenient, necessitating clinic visits.
• Existing home-based sensors face deployment challenges.

Purpose of the Study:

• To develop a practical, highly sensitive, implantable sensor for continuous IOP monitoring.
• To leverage femtosecond laser direct writing for sensor fabrication on commercial intraocular lenses (IOLs).
• To ensure biocompatibility and streamline the fabrication process.

Main Methods:

• Fabrication of a pneumatic pressure sensor using femtosecond laser direct writing on commercial IOLs.
• Integration of optical coherence tomography for real-time monitoring during laser operations.
• Utilizing microfluidic principles for sensor design.

Main Results:

• Achieved practical fabrication with high sensitivity and remarkable reproducibility.
• Demonstrated a streamlined manufacturing process with reduced costs.
• Maintained IOL biocompatibility by avoiding chemical treatments.

Conclusions:

• The developed implantable sensor offers a promising solution for convenient, home-based continuous IOP monitoring.
• This technology can significantly improve glaucoma patient management and reduce the burden of frequent clinic visits.
• The innovative fabrication method enhances reproducibility and cost-effectiveness.