OCT Imaging Markers for Biometry Verification
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Solution Overview
Problem
Existing biometry systems struggle to accurately measure the axial length of the eye, especially in cases with macular abnormalities, and fail to provide visual indications for users to verify the accuracy of these measurements.
Innovation Solution
The method involves using optical coherence tomography (OCT) to scan the eye, detect the retinal pigment epithelium (RPE) and fovea, and generate enhanced OCT images with virtual markers to visually identify these structures, allowing users to verify the accuracy of axial length measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing biometry systems measure axial length without visual verification, then the measurement process is simple and fast, but the measurement precision deteriorates due to macular abnormalities causing incorrect measurement locations
Solution Approach 1:
The patent introduces OCT imaging as an intermediary verification tool between the biometry measurement system and the final measurement result. The OCT images provide visual confirmation of anatomical landmarks (RPE, fovea) to ensure the biometry system is measuring from the correct locations, thereby improving measurement precision without fundamentally changing the biometry measurement process itself
Solution Approach 2:
The system implements feedback by displaying OCT images with axial length measurements overlaid to the user. This visual feedback allows the user to verify that the measurement is taken from the correct anatomical landmarks (RPE and fovea), enabling correction of measurement errors caused by macular abnormalities
2Reliability
If existing biometry systems do not detect macular abnormalities, then the system operation is simple, but the reliability deteriorates due to incorrect lens implantation
Solution Approach 1:
The patent applies preliminary action by performing OCT scanning and visual verification of anatomical landmarks before finalizing the axial length measurement for lens implantation. This preliminary verification step detects macular abnormalities and ensures correct measurement locations are used, thereby improving reliability before the critical lens implantation procedure
Solution Approach 2:
OCT imaging serves as an intermediary diagnostic tool that detects macular abnormalities and verifies anatomical landmarks before the biometry measurement is finalized. This intermediary step provides visual confirmation to ensure reliable measurement without adding complex new detection algorithms to the biometry system itself
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 approach enables users to efficiently and accurately verify the accuracy of axial length measurements, reducing the risk of incorrect lens implantation and subsequent surgeries.
Implementation Method 1
receiving an indication to initiate a first optical coherence tomography (OCT) scanning of an eye. The method further includes initiating, based on the received indication, the first OCT scanning of the eye.
Data Source
AI summary
The systems and methods described herein provide improved techniques for displaying imaging markers for verifying biometry. A method includes receiving an indication to initiate a first optical coherence tomography (OCT) scanning of an eye; initiating, based on the received indication, the first OCT scanning of the eye; generating, based on the first OCT scanning, a first OCT image of the eye; detecting, based on the first OCT image, a retinal pigment epithelium (RPE) and a fovea in the eye; based on the detecting, causing a first enhanced OCT image to be displayed to a user, the first enhanced OCT image displaying: a first virtual marker segmenting at least a portion of the detected RPE, and a second virtual marker, where the second virtual marker visually identifies a location of the detected fovea, and where the second virtual marker is a radial line through the location of the detected fovea.