Ophthalmic Trend Graphs with Device-Change Detection
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Solution Overview
Problem
Existing ophthalmic analysis devices face issues when used across different manufacturers and models, leading to inconsistencies in numerical values and inaccurate trend graph predictions due to differences in device criteria, potentially overlooking eye diseases.
Innovation Solution
An ophthalmic system that associates examination results with device information, including manufacturer and model, and adjusts display modes to account for changes, using a comparison table and machine learning for accurate predictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If examination results are displayed using standard trend graphs without device change detection, then the display is simple and consistent, but measurement precision deteriorates when device manufacturer or model changes occur
Solution Approach 1:
The system performs preliminary detection of device information changes and stores reference data before displaying trend graphs. When a device change is detected, the system proactively switches to a special display mode that accounts for device-specific numerical characteristics, rather than waiting for inaccurate comparisons to occur
Solution Approach 2:
The display control applies different quality characteristics to different segments of the data presentation. Normal data points are displayed with standard formatting, while data points affected by device changes are displayed with special markers or adjusted scaling to reflect their unique measurement characteristics
2Reliability
If device information is stored and processed to detect manufacturer or model changes, then measurement precision improves, but device complexity increases
Solution Approach 1:
The server and terminal device are designed with multi-functional capabilities that handle both routine examination result storage and device-specific data management through a unified system architecture. The display control unit serves multiple purposes: normal data visualization, device change detection, and adaptive presentation formatting
Solution Approach 2:
The system introduces an intermediary layer (display controller) that mediates between the raw examination data and the final presentation. This intermediary detects device information changes and applies appropriate transformation rules to ensure accurate interpretation without requiring complex modifications to the underlying data storage or processing systems
3Ease of operation
If examination results from different devices are compared directly without adjustment, then ease of operation is maintained, but measurement precision deteriorates due to device-specific numerical value differences
Solution Approach 1:
The system uses visual indicators (such as color coding or symbolic markers) to distinguish between data points obtained from consistent devices versus those affected by device changes. This allows examining doctors to quickly identify which data points require special interpretation without complicating the overall interface
Solution Approach 2:
The system extracts and separates device information from the examination results, allowing it to be processed and compared independently. This extracted device metadata is then used to guide the presentation of numerical results, ensuring that device-specific characteristics are accounted for while maintaining clear data visualization
Data Source
AI summary
An ophthalmic system includes a server including a memory storing a result of an examination or an image diagnosis related to an eyeball of a subject and a terminal device connected to the server. The terminal device includes a display displaying the result and a display controller controlling a display content and a display mode. The memory stores the result in association with device information including a manufacturer or a model name of an ophthalmic device used at that time. The display displays the result in a time-series graph. When a change in the manufacturer or the model name from that in a previous examination is detected based on the device information, the display controller sets the display mode of the graph to a first change mode.