Ophthalmic Imaging Apparatus Composite Analysis Map
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Solution Overview
Problem
Conventional ophthalmic imaging techniques face challenges in accurately analyzing and presenting the state of the eye over a wide region, particularly in glaucoma diagnosis, due to separate data collection and analysis of peripheral optic nerve head and fovea centralis regions, leading to errors and reduced accuracy.
Innovation Solution
An ophthalmic imaging apparatus and information processing system that generates three-dimensional data using OCT, analyzes partial data sets to create multiple analysis maps, and displays these maps over a front image of the eye, enabling comprehensive and accurate analysis of the eye's state across a wide region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate data collection is performed for peripheral optic nerve head and fovea centralis regions, then data can be collected for specific regions of interest, but errors occur in registration and accuracy of analysis results deteriorates
Solution Approach 1:
The patent combines multiple analysis maps (peripapillary RNFL thickness map, macular GCL thickness map, etc.) into a single composite analysis map that displays all regional analysis results simultaneously. This merging eliminates registration errors between separate maps and provides a unified view of the entire eye fundus, resolving the contradiction between regional specificity and registration accuracy.
Solution Approach 2:
The patent introduces a coordinate system transformation mechanism as an intermediary that automatically aligns multiple analysis maps based on their spatial relationships. This intermediary process eliminates manual registration errors and ensures accurate overlay of different regional analysis results, thereby improving both measurement precision and reliability.
2Measurement precision
If separate analysis is performed for peripheral and central regions, then detailed analysis of each region can be conducted, but it becomes difficult to grasp the overall eye state with ease
Solution Approach 1:
The patent merges multiple separate analysis maps into a single composite display that shows peripapillary RNFL thickness, macular GCL thickness, and other regional measurements simultaneously. This allows clinicians to maintain detailed regional analysis precision while easily grasping the overall eye state in one unified visualization, resolving the contradiction between detailed analysis and overall comprehension.
Solution Approach 2:
The patent overlays multiple analysis parameters onto a two-dimensional fundus image coordinate system, adding spatial context to the data. This dimensional integration allows simultaneous display of multiple regional analyses with precise spatial localization, enabling both detailed regional precision and easy overall assessment without requiring separate views.
3Adaptability or versatility
If multiple separate analysis maps are generated and displayed, then comprehensive analysis coverage is achieved, but the complexity of data presentation increases
Solution Approach 1:
The patent combines multiple separate analysis maps (RNFL thickness map, GCL thickness map, IPL thickness map, etc.) into a single integrated composite analysis map. This merging maintains comprehensive analysis coverage across all retinal layers and regions while simplifying data presentation by eliminating the need to switch between multiple separate displays, thus resolving the contradiction between versatility and complexity.
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 enhances the accuracy of eye analysis by reducing errors in data registration and presentation, allowing for easier visualization and diagnosis of eye conditions over a broader area.
Implementation Method 1
generates three dimensional data by scanning a three dimensional region of a subject's eye using optical coherence tomography (OCT)
Data Source
AI summary
An ophthalmic imaging apparatus according to an exemplary embodiment includes a three dimensional data generator, an analyzer, and a display controller. The three dimensional data generator generates three dimensional data by scanning a three dimensional region of a subject's eye using optical coherence tomography (OCT). The analyzer generates a plurality of analysis maps by analyzing a plurality of pieces of partial three dimensional data in the three dimensional data. The display controller displays the plurality of analysis maps over a front image of the subject's eye on a display device.