Eye Structure Illumination Scanning for Clear Composite Imaging
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Solution Overview
Problem
Conventional illumination techniques for the eye struggle to capture clear and sharp images of multiple structures simultaneously due to over or underexposure, especially in areas with different light responses, making precise determination of structure position and shape challenging for treatments like cataracts and presbyopia.
Innovation Solution
A method and system that uses controlled light beam scanning with predetermined patterns and capture techniques to optimize illumination for each eye structure, combining images from different scan regions to create a single composite image with optimal illumination, and a calibration process to correct for image distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional illumination techniques are used to capture images of multiple eye structures, then the imaging process is simple, but the images suffer from over or underexposure and lack clarity
Solution Approach 1:
The illumination system divides the eye into multiple regions of interest (cornea, lens, vitreous humor) and applies different illumination patterns to each region. The cornea receives illumination from multiple angles to capture surface topography, while the lens receives different illumination to capture internal structures, allowing each structure to be optimally illuminated without over or underexposure
Solution Approach 2:
Different illumination characteristics are applied to different regions of the eye. The cornea receives polarized light for surface imaging, while the lens receives non-polarized light for internal structure imaging. This local optimization of illumination quality ensures each structure is imaged with appropriate lighting conditions
2Measurement precision
If a single illumination pattern is used for all eye structures, then the illumination system is simple, but structures with different light responses cannot be clearly captured
Solution Approach 1:
The illumination system dynamically adjusts illumination patterns based on the specific eye structure being imaged. The system can switch between polarized and non-polarized light, adjust illumination angles, and modify beam intensity in real-time to match the optical properties of different structures such as the cornea, lens, and vitreous humor
Solution Approach 2:
The system changes multiple illumination parameters including polarization state, beam angle, intensity, and wavelength to optimize imaging of different eye structures. These parameter adjustments are made adaptively to match the specific optical characteristics of each structure being examined
3Measurement precision
If conventional imaging methods are used, then post-processing is minimal, but precise determination of structure position and shape is difficult
Solution Approach 1:
The system performs preliminary calibration by capturing images of calibration targets with known geometric relationships before imaging the eye. This calibration data is used to pre-compute correction factors for lens distortion and perspective effects, which are then applied during actual eye imaging to directly obtain accurate structural measurements without extensive post-processing
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 clear and sharp imaging of eye structures, allowing precise determination of position and shape for targeted laser treatments, reducing the need for post-processing and enhancing surgical accuracy.
Implementation Method 1
A method and system of illumination of structures within an eye uses a laser beam to illuminate the cornea, natural human crystalline lens and adjacent structures of the eye
Implementation Method 2
Cataracts scatter light, including laser light, and thus, can prevent a laser treatment beam from having the desired tissue effect
Data Source
AI summary
There is provided a system, apparatus and methods for enhancing the illumination of structures of the eye using predetermined scan patterns of an illuminating light beam. The systems, apparatus and methods further provide for obtaining enhanced single images of multiple structures of the eye.