Offline Eye Gaze-Based Visual Field Testing System

This technology introduces a portable and affordable way to perform visual field assessment using only a standard webcam and machine learning software. Unlike conventional systems that rely on costly specialized equipment and require constant supervision, this approach tracks eye movements in response to simple on-screen visual stimuli. The software then analyzes gaze patterns to infer potential visual impairments. By removing the need for internet connectivity, external devices, or technician oversight, the system provides a scalable and accessible solution that can be deployed in clinics, telehealth platforms, or underserved communities. Its offline capability makes it particularly valuable for rural or resource-limited settings, where early detection of vision problems is often inaccessible.

Background: 
Standard automated perimetry, the current gold standard for visual field testing, demands bulky equipment, fixed head positioning, and manual patient responses. These requirements present barriers for elderly, pediatric, and disabled patients, while also creating cost and workflow burdens for clinics. Virtual reality and eye movement perimetry have emerged as alternatives, but they still require manual clicking, technician oversight, or expensive eye-tracking hardware. The invention overcomes these limitations by applying deep learning gaze estimation to ordinary video input, eliminating both specialized equipment and manual response requirements. This results in a more natural testing environment, improved patient accessibility, and significantly reduced costs compared to existing technologies.

Applications: 

  • Ophthalmology and optometry clinics
  • Telehealth platforms for remote vision testing
  • Rural and low-resource healthcare environments
  • Preventive eye health screenings in schools, workplaces, and community health programs
  • Assistive technology for patients with limited mobility or coordination


Advantages: 

  • Eliminates the need for expensive proprietary hardware
  • Functions entirely offline without requiring internet connectivity
  • Provides faster, automated testing without technician oversight
  • Offers a natural, patient-friendly experience with no manual clicking
  • Enables low-cost, scalable screening in underserved regions
  • Portable and compatible with standard webcams and common computing devices
Patent Information: