Infrared Eye-Tracking Diagnostic Device for Impairment Scoring
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Solution Overview
Problem
Existing methods are inadequate for accurately detecting substance use or abuse and assessing the severity of inebriation or impairment, lacking the ability to quantify and analyze these conditions effectively.
Innovation Solution
A diagnostic device equipped with infrared lights, stimulus lenses, mirrors, and cameras is used to track eye movements and analyze pupil responses to stimuli, employing algorithms to derive metrics and predict impairment through eye tracking technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If automated eye movement tracking is used for substance detection, then detection capability is improved, but measurement precision is insufficient for accurately quantifying impairment severity
Solution Approach 1:
The patent transforms qualitative eye movement observations into quantitative measurements by tracking multiple parameters including pupil diameter, pupil velocity, pupil acceleration, saccade amplitude, saccade velocity, and saccade latency. These parameter changes enable precise measurement of impairment severity rather than simple detection
Solution Approach 2:
The patent replaces subjective clinical assessment with objective computational analysis. Algorithms process the captured eye movement data to generate impairment scores, substituting mechanical/subjective evaluation with automated computational systems for more precise measurement
2Measurement precision
If comprehensive eye tracking analysis is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses a single eye tracking device to perform multiple functions: detecting substance use, quantifying impairment severity, identifying specific drug classes, and assessing neurological conditions. This multi-functionality reduces the need for multiple specialized devices while maintaining measurement precision
Solution Approach 2:
The system uses the subject's own eye movements as the test stimulus and measurement target. The eye tracking device captures natural eye movements in response to visual stimuli without requiring external equipment or complex setup, simplifying the overall system while enabling comprehensive analysis
3Productivity
If rapid detection is achieved through automated algorithms, then productivity is improved, but measurement precision may be compromised
Solution Approach 1:
The patent pre-programs multiple drug-specific algorithms that analyze different eye movement parameters. When data is collected, the appropriate algorithm is already in place to immediately process the data, enabling rapid detection without compromising precision through comprehensive analysis
Solution Approach 2:
The system provides immediate feedback by generating real-time impairment scores based on eye movement analysis. The algorithms continuously process incoming data streams and provide rapid results while maintaining measurement precision through multiple validation parameters and quality control checks
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides rapid and accurate detection of substance use and impairment by analyzing eye movements and pupil responses, generating a composite index score to assess the likelihood of impairment.
Implementation Method 1
at least one infrared light disposed within the main enclosure adjacent the subject end
Data Source
AI summary
A diagnostic device includes a main enclosure having a subject end and an operator end at least one infrared light disposed within the main enclosure adjacent the subject end, at least one stimulus lens, at least one stimulus screen disposed adjacent the operator end having a front toward a subject and a back, a camera filter disposed adjacent the stimulus screen, a mirror, a camera mount disposed adjacent the back of the stimulus screen, and at least one camera coupled to the camera mount and directed toward the mirror.