Fundus Observation Device Display Size Matching
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Solution Overview
Problem
Conventional fundus oculi observation devices fail to accurately match the display sizes of fundus oculi images and measurement range images, making it difficult to show the positional relationship between retinal camera images and OCT images with high precision.
Innovation Solution
A fundus oculi observation device that stores imaging condition information, including axial length, to match the display sizes of 2-dimensional fundus oculi images and measurement range images, allowing for accurate positional alignment based on the eye's characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fundus oculi observation devices display fundus oculi images and measurement range images separately without matching display sizes, then the device structure remains simple, but the positional relationship between retinal camera images and OCT images cannot be shown with high precision
Solution Approach 1:
The system pre-acquires imaging condition information including axial length before displaying images. This preliminary data collection enables subsequent automatic calculation of display sizes and positions, ensuring accurate positional relationship without requiring complex real-time adjustments or manual calibration procedures.
Solution Approach 2:
Imaging condition information (particularly axial length) serves as an intermediary parameter that bridges the retinal camera and OCT imaging systems. This intermediate data enables the calculation of appropriate display sizes and positions for both images, allowing accurate positional relationship to be achieved through computational methods rather than direct hardware coupling.
2Measurement precision
If the display sizes of fundus oculi images and measurement range images are matched based on axial length, then positional alignment accuracy is improved, but the need to store and process imaging condition information increases system complexity
Solution Approach 1:
The imaging condition information storage function serves multiple purposes: it enables accurate display sizing, supports positional relationship calculation, and can be reused for different imaging scenarios. This multi-functionality justifies the added complexity by providing comprehensive benefits across various operational modes without requiring separate data collection systems.
Solution Approach 2:
The system automatically uses its own imaging condition information (axial length) to calculate and adjust display parameters. This self-service approach eliminates the need for external calibration equipment or manual measurement tools, reducing overall system complexity despite the added data processing requirements.
3Reliability
If imaging condition information including axial length is stored and used for display size matching, then diagnostic accuracy is enhanced through precise positional alignment, but the information storage and processing requirements increase
Solution Approach 1:
The system stores and processes only the specific imaging condition information (particularly axial length) that is critical for display size matching and positional alignment. This selective approach to data storage focuses resources on the most important parameters for diagnostic accuracy rather than storing all possible imaging data, thereby enhancing reliability without excessive data storage requirements.
Data Source
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AI summary
A fundus oculi observation device comprises: a first image forming part configured to form a 2-dimensional image of a surface of a fundus oculi of an eye; a second image forming part configured to form a tomographic image having a cross-sectional position in a measurement region of the fundus oculi corresponding to a partial region of the 2-dimensional image; a display; a storage configured to store imaging condition information including characteristic information showing a characteristic of the eye; and a controller configured to match display sizes of the formed 2-dimensional image and a measurement range image showing a range of the measurement region with each other, based on the stored imaging condition information, and cause the display to display the 2-dimensional image and the measurement range image whose display sizes are matched.