OCT Image Processor for Real-Time Cataract Laser Feedback
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Solution Overview
Problem
Current cataract surgical imaging systems are unable to provide timely and actionable feedback during procedures, leading to potential complications due to insufficient imaging resolution and analysis capabilities within the short surgical time frames, which can result in inaccuracies and safety risks.
Innovation Solution
The implementation of a Spectral Domain Optical Coherence Tomographic (SD-OCT) imaging system that generates images and performs analysis in real-time, allowing for the modification of the surgical procedure by providing feedback to the surgeon or automatically adjusting the laser scan patterns to prevent complications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional imaging systems are used during cataract surgery, then the surgical procedure can be performed, but the imaging resolution and analysis capability are insufficient within the short surgical time frame
Solution Approach 1:
The system performs preliminary actions by pre-planning the complete scan pattern before surgery, pre-positioning the OCT imaging system and laser system, and pre-establishing the coordination between imaging and surgical components. This allows the actual surgical imaging to proceed rapidly without setup delays, resolving the contradiction between high resolution imaging and short surgical time.
Solution Approach 2:
The system implements continuous useful action by performing real-time OCT imaging throughout the entire surgical procedure without interruption. The imaging system continuously captures cross-sectional images of the treatment area, providing uninterrupted visual feedback that maintains both high resolution and temporal efficiency throughout the surgery.
2Reliability
If real-time imaging and analysis are implemented during the procedure, then actionable feedback can be provided to improve precision and safety, but the system complexity and cost increase
Solution Approach 1:
The system merges the OCT imaging system with the surgical laser system into an integrated platform. The same optical components and scanning mechanisms serve both imaging and treatment functions, reducing overall system complexity while enabling real-time feedback for improved surgical safety and precision.
Solution Approach 2:
The imaging system serves multiple functions: it provides real-time cross-sectional imaging for surgical guidance, monitors treatment progress, detects potential complications, and enables post-procedure analysis. This multi-functionality justifies the system investment by delivering comprehensive safety and precision benefits across the entire surgical workflow.
3Productivity
If high-speed imaging is used to capture images during the short surgical time, then real-time feedback becomes possible, but image resolution may be compromised
Solution Approach 1:
The system dynamically changes imaging parameters during surgery, adjusting scan density, resolution levels, and frame rates based on the specific surgical phase and clinical needs. This allows optimization of both speed and resolution for different procedural requirements, capturing critical moments with high resolution while maintaining overall fast imaging throughput.
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
This solution enables precise and safe cataract surgery by providing high-resolution, real-time imaging feedback, allowing for immediate adjustments to the surgical process, thereby improving the efficacy and safety of the procedure.
Implementation Method 1
Optical Coherence Tomographic (OCT) imaging system... Spectral Domain Optical Coherence Tomographic imaging system
Implementation Method 2
OCT imaging system... generate high quality images... generate an image of a portion of the photo-disrupted region
Implementation Method 3
Pulsed surgical laser systems with femtosecond laser pulses provide very precisely controlled cutting functionalities... the lens can be photo-disrupted inside the capsular bag by scanning the surgical laser beam
Data Source
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Figure 1C
AI summary
A cataract surgical system includes a laser source to generate a first set of laser pulses; a guiding optic to guide the first set of laser pulses to a cataract target region in an eye; a laser controller to generate an electronic representation of a target scan pattern, and to control the guiding optic to scan the first set of laser pulses according to a portion of the target scan pattern to create a first photo-disrupted region in the cataract target region; and a Swept-Source Optical Coherence Tomographic (SS-OCT) imaging system to generate an image of a portion of the first photo-disrupted region. The laser controller can generate an electronic representation of a modified scan pattern in relation to the image generated by the SS-OCT imaging system, and control the guiding optic to scan a second set of laser pulses according the modified scan pattern.