Retinal Stimulation Feedback Control for Artifact-Reduced Signal Capture
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Solution Overview
Problem
Existing systems for collecting retinal signal data, such as electroretinograms (ERG), fail to accurately measure and control key parameters like light intensity, wavelength, pupil size, and eye movement, leading to artifacts and limited information volume, which impedes further analysis.
Innovation Solution
A system that includes a spectrometer to measure light spectrum and intensity, a camera to capture eye images, and electrodes to collect electrical signals, with a controller adjusting light parameters in real-time to improve data accuracy and reduce artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing systems collect retinal signal data without real-time measurement and control of light parameters, then the system complexity is reduced, but the measurement precision and reliability of retinal signal data deteriorate due to uncontrolled variations in light intensity, wavelength, and other parameters
Solution Approach 1:
The system implements real-time feedback control by continuously measuring actual light parameters (intensity, wavelength, duration) during retinal stimulation and using this information to adjust subsequent stimuli and interpret retinal signal data. This closed-loop approach ensures measurement precision while maintaining manageable system complexity through automated control algorithms.
Solution Approach 2:
The patent replaces manual control of light parameters with automated electronic control systems that use computer algorithms to adjust light delivery based on real-time measurements. This substitution of mechanical/manual adjustment with electronic automation improves measurement precision without proportionally increasing device complexity.
2Loss of information
If the system collects comprehensive data about light stimulation characteristics and individual parameters, then the information volume and analysis capability improve, but the device complexity and data processing requirements increase
Solution Approach 1:
The system employs a multi-functional integrated platform that simultaneously collects retinal signal data, light stimulation parameters, pupil size, eye position, and other relevant measurements using a single coordinated system. This universal approach captures comprehensive information without requiring separate complex systems for each measurement type, thereby reducing overall data processing complexity.
3Reliability
If real-time control and adjustment of light parameters is implemented, then the reliability and precision of retinal signal collection improve, but the use of energy and system complexity increase
Solution Approach 1:
The system dynamically adjusts light parameters in real-time based on measured conditions rather than using fixed, continuous high-intensity stimulation. This dynamic approach maintains data collection reliability by adapting to actual conditions while reducing energy consumption by delivering light only when and where needed based on real-time feedback.
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
Enhances the precision and relevance of retinal signal data collection by continuously adjusting light parameters, reducing artifacts, and enabling higher density and volume of information capture, facilitating multimodal mapping and biomarker detection.
Implementation Method 1
The electrical signals originate from specific cells located in the retina. The electrical signals are triggered by light stimulation
Implementation Method 2
a spectrometer configured to record a light spectrum and an intensity of the flash of light
Data Source
AI summary
There is disclosed a method and system for retinal stimulation and retinal signal data collection. The system comprises a housing. The housing supports one or more light sources that are configured to expose a retina of an eye of an individual to a flash of light. The housing supports a spectrometer that is configured to record a light spectrum and an intensity of the flash of light. The housing supports a camera configured to capture image data of the eye while exposed to the flash of light.