Brillouin Spectroscopy for Corneal Biomechanical Mapping
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Solution Overview
Problem
Current methods for treating eye disorders like keratoconus, such as cross-linking treatments, lack accurate techniques for determining the areas of the eye that require treatment and assessing the treatment's effectiveness, leading to potential inefficiencies and variability in outcomes.
Innovation Solution
A system that combines biomechanical measurement, corneal tomography, and iris imaging using Brillouin spectroscopy to determine biomechanical properties of the cornea by measuring Brillouin frequency shifts in scattered light, allowing for precise identification of corneal weakness and real-time monitoring of treatment effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cross-linking treatment is applied to treat keratoconus, then corneal strength is improved, but accurate determination of treatment areas and assessment of treatment effectiveness cannot be achieved
Solution Approach 1:
The patent applies Brillouin spectroscopy to measure changes in the mechanical properties of corneal tissue by detecting frequency shifts in scattered light. This non-invasive technique quantifies biomechanical parameters such as stiffness and elasticity, enabling precise measurement of corneal strength before, during, and after cross-linking treatment without requiring invasive procedures.
Solution Approach 2:
The patent replaces traditional mechanical measurement methods with optical-based Brillouin spectroscopy. Instead of using physical contact or mechanical testing devices that could damage the cornea, the system uses light scattering phenomena to indirectly measure corneal biomechanics, thereby achieving high measurement precision while maintaining corneal integrity.
2Measurement precision
If multiple measurement systems are integrated to improve measurement precision, then treatment planning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent integrates corneal topography, tomography, and Brillouin spectroscopy measurement systems into a single unified platform. This consolidation allows simultaneous acquisition of multiple corneal parameters (surface shape, internal structure, and biomechanical properties) without requiring separate devices, thereby improving measurement precision while managing device complexity through integrated design.
Solution Approach 2:
The patent creates a multi-functional measurement system that can perform corneal topography, tomography, and Brillouin spectroscopy measurements using a single device platform. This universal system eliminates the need for multiple separate instruments, reducing overall device complexity while providing comprehensive corneal assessment capabilities for improved treatment planning.
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 accurate planning, implementation, and assessment of eye treatments by providing detailed biomechanical and anatomical data, improving the precision and effectiveness of cross-linking treatments by identifying and stabilizing corneal weaknesses and monitoring healing processes.
Implementation Method 1
The biomechanical measurement system also includes a spectrometer configured to receive the scattered light and process frequency characteristics of the received scattered light to measure a Brillouin frequency shift in the scattered light
Data Source
AI summary
A system for determining biomechanical properties of corneal tissue includes a light source configured to provide an incident light and a confocal microscopy system configured to scan the incident light across a plurality of cross-sections of corneal tissue. The incident light is reflected by the corneal tissue as scattered light. The system also includes a filter or attenuating device configured to block or attenuate the Rayleigh peak frequency of the scattered light, a spectrometer configured to receive the scattered light and process frequency characteristics of the received scattered light to determine a Brillouin frequency shift in response to the Rayleigh peak frequency being blocked or attenuated by the filter or attenuating device, and a processor configured to determine a three-dimensional profile of the corneal tissue according to the determined Brillouin frequency shift. The three-dimensional profile provides an indicator of one or more biomechanical properties of the corneal tissue.