Contact lens sensors in ocular diagnostics

Area of Science:

• Biomedical Engineering
• Ophthalmology
• Materials Science

Background:

• Contact lenses are emerging as a minimally invasive platform for diagnostics and drug delivery.
• Current applications include tear glucose monitoring and intraocular pressure measurement for glaucoma diagnosis.
• The eye's diagnostic potential extends beyond current applications, offering opportunities for broader disease monitoring.

Purpose of the Study:

• To review the state-of-the-art in contact lens sensor technology.
• To explore fabrication, detection, powering, and readout mechanisms for contact lens sensors.
• To analyze market and regulatory aspects for commercialization.

Main Methods:

• Review of recent advancements in polymer synthesis, electronics, and micro/nanofabrication for contact lens sensors.
• Analysis of detection methods for various biomolecules in ocular fluids.
• Examination of wireless powering, data readout, and mobile device integration.

Main Results:

• Contact lens sensors can quantify numerous biomolecules in ocular fluids, enabling continuous, non-invasive monitoring.
• Integration with mobile devices facilitates clinical and point-of-care applications.
• Case studies demonstrate successful product development, such as intraocular pressure sensors.

Conclusions:

• Contact lens sensors represent a significant advancement in diagnostics and disease management.
• Further development and manufacturing considerations are crucial for widespread clinical adoption.
• Market analysis and FDA regulatory pathways are key for commercialization.