Retinal DLS Screening for Early Dementia Detection
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Solution Overview
Problem
Current diagnostic methods for dementia and other neurodegenerative diseases lack sensitivity and quantifiability, making it difficult to detect early onset of these conditions before symptom development, which is crucial for effective treatment.
Innovation Solution
Utilizing Dynamic Light Scattering (DLS) spectroscopy to measure the Brownian motion of retinal proteins through a non-invasive DLS device attached to ophthalmologic instruments, allowing for early detection of neurologic damage by analyzing the diffusion coefficient of retinal proteins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current diagnostic methods are used for dementia detection, then the diagnosis can be made, but the detection sensitivity and quantifiability are insufficient to detect early onset before symptom development
Solution Approach 1:
The patent uses the retina as an intermediary tissue to detect brain pathology. By measuring retinal nerve fiber layer thickness and analyzing retinal images, the system can indirectly detect neurodegenerative changes in the brain before clinical symptoms appear, thereby improving detection sensitivity without requiring direct brain imaging or complex neurological assessments
Solution Approach 2:
The patent replaces complex mechanical neurological examinations and invasive brain imaging with optical imaging techniques (OCT and retinal photography). This substitution allows for non-invasive, quantitative measurement of retinal parameters that correlate with brain pathology, improving both detection sensitivity and ease of operation
2Loss of time
If early detection of neurologic damage is achieved through retinal imaging, then treatment can be initiated earlier, but the quantitative assessment of disease progression and treatment efficacy is limited
Solution Approach 1:
The patent implements a feedback mechanism by repeatedly imaging the retina over time and comparing changes in retinal nerve fiber layer thickness and other parameters. This longitudinal assessment provides quantitative data on disease progression and treatment response, allowing clinicians to adjust therapy based on objective measurements rather than subjective clinical evaluations
Solution Approach 2:
The patent measures multiple retinal parameters including nerve fiber layer thickness, ganglion cell layer thickness, and vascular characteristics. By monitoring changes in these parameters over time, the system provides comprehensive quantitative information about disease progression and treatment efficacy, reducing information loss about the disease state
3Reliability
If definitive diagnosis of dementia is made using current methods, then the diagnosis can be confirmed, but it requires posthumous pathological examination with protein fragment analysis
Solution Approach 1:
The patent performs preliminary detection and monitoring of neurodegenerative changes through retinal imaging before definitive diagnosis is needed. By detecting early signs of disease in the retina, the system can identify patients at risk and monitor their progression, allowing for earlier intervention and reducing the need for posthumous confirmation in many cases
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
Enables early detection of dementia and other neurodegenerative diseases before clinical symptoms appear, providing a quantitative assessment of disease progression and treatment efficacy.
Implementation Method 1
Utilizing Dynamic Light Scattering (DLS) spectroscopy to measure the Brownian motion of retinal proteins
Implementation Method 2
measure the Brownian motion of retinal proteins through a non-invasive DLS device
Data Source
AI summary
An apparatus and method for aiding in the detection of dementia, concussion, other neurologic conditions, retinal, and optic nerve conditions. The apparatus enables the diffusion coefficient of the tissue to be ascertained and studied by directing the light from a laser or other coherent light source at the patient's retina, optic nerve or choroid and measuring the fluctuations in the intensity of the back-scattered light caused by the movement of light scatterers in the tissue. By comparing the measurements to a normal database, or to the subject's previous measurement, in combination with an eye examination and OCT image/measurement the changes caused by the disease and the effectiveness of therapy can be ascertained. The disclosed apparatus allows the incident and detection optics to be attached to ophthalmic devices typically used in ophthalmologic care. Also, where both the incident laser fiber optic and the detection fiber optic are directly connected to goggles, one or more or all of the above-described mirrors may not be necessary, as both fiber optics are preferably directly directed into the eye.