Binocular Retinal Imaging System for Fixational Eye Motion Tracking
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Solution Overview
Problem
Current methods lack the capability to simultaneously and accurately track the fixational eye motion of both eyes and compare deviations between them, which is crucial for diagnosing and monitoring neurological and neurodegenerative conditions.
Innovation Solution
A binocular retinal imaging system that records and analyzes the fixational eye motion of both eyes, allowing for conjugacy comparisons to assess neurological conditions by analyzing velocity, peak velocity, amplitude, waveforms, and patternistic properties of waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional eye tracking methods are used, then single-eye motion can be recorded, but simultaneous binocular motion tracking and comparison capability is lacking
Solution Approach 1:
The patent combines two separate eye tracking systems into a single binocular platform that simultaneously records fixational eye motion from both eyes. The system integrates dual imaging devices with synchronized recording capabilities, enabling concurrent capture of left and right eye microsaccades for comparative analysis, thereby resolving the limitation of single-eye tracking methods
2Measurement precision
If detailed analysis of velocity, amplitude, and waveforms is performed, then diagnostic accuracy improves, but system complexity increases
Solution Approach 1:
The patent segments the eye motion analysis into distinct quantitative parameters including velocity, peak velocity, amplitude, waveforms, and patternistic properties. Each parameter is measured and analyzed separately, allowing comprehensive diagnostic information to be extracted through modular analysis of individual motion characteristics rather than requiring complex integrated processing
3Productivity
If rapid testing and diagnosis are performed at on-site settings, then productivity improves, but measurement precision may be compromised
Solution Approach 1:
The patent implements preliminary calibration and baseline establishment procedures that are performed once at the on-site setting. The system captures baseline conjugacy comparison data from healthy peers during initial setup, enabling rapid subsequent diagnoses without requiring repeated complex calibration, thus maintaining both speed and precision in portable on-site environments
Data Source
AI summary
A binocular scanning laser ophthalmoscope (SLO) is used to track the fixational eye movement of each of the eyes of a subject. The binocular SLO may include right eye optics for imaging a portion of the retina of the right eye and left eye optics for imaging a portion of the retina of the left eye. Shifts in the imaged portion of the retina with respect to a reference image of the retina may be used to measure and track eye movement. The right eye optics and left eye optics may be separate imaging paths, each with its own bi-directional MEMS scanning mirror and Keplerian telescope. The use of the MEMS scanning mirrors minimizes the size and weight of the binocular SLO.