Ophthalmic Imaging Alignment GUI Using Virtual Eye Model
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Solution Overview
Problem
Existing ophthalmic imaging systems require complex alignment procedures, necessitating significant training for operators to accurately position the eye relative to the imaging device, particularly in conveying three-dimensional positioning information effectively.
Innovation Solution
A graphical user interface that conveys intuitive alignment information using graphics, such as size-variable pupil representations and cross-hair indicators, eliminating the need for live video feeds and reducing cognitive burden by mapping depth information more closely to human perception, thereby simplifying the alignment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a live video feed with graphical positioning cues is used to convey three-dimensional positioning information, then the system operator can monitor the patient's eye and interpret positioning cues, but the operator requires complex mental calculations and extensive training to achieve accurate alignment
Solution Approach 1:
The patent creates a virtual copy of the patient's eye that replicates its three-dimensional positioning information in a simplified graphical representation. This virtual model allows the operator to directly observe alignment status without performing mental translations between different reference planes, thereby maintaining measurement precision while dramatically reducing operational complexity and training requirements
Solution Approach 2:
The patent introduces a virtual eye model as an intermediary between the actual patient's eye and the operator's perception. This intermediary translates complex three-dimensional positioning data into an intuitive graphical format that directly reflects alignment status, eliminating the need for the operator to perform complex mental calculations while preserving alignment precision
2Speed
If a live video feed is used to display the patient's eye, then real-time monitoring is possible, but momentary eye movements such as tremors create instability and require continuous adjustment by the operator
Solution Approach 1:
The patent performs preliminary processing of the video feed data to extract essential three-dimensional positioning information before displaying it in the virtual eye model. By pre-processing the data to identify and filter out transient movements like tremors, the system maintains real-time monitoring capability while presenting a stable alignment representation that does not require continuous operator adjustment
Solution Approach 2:
The patent implements a filtering mechanism that anticipates and compensates for momentary eye movements before they affect the displayed alignment information. By cushioning against these transient disturbances through data filtering and virtual model stabilization, the system maintains both real-time responsiveness and alignment stability without requiring continuous operator intervention
Data Source
AI summary
An ophthalmic imaging system has a specialized graphical user interface GUI to convey information for manually adjusting control inputs to bring an eye into alignment with the system. The GUI uses color and size changes to indicate axial positioning information of the system relative to a patient's eye. Furthermore, no live feed of the patient's eye is needed. Rather, a graphic indicating the patient's eye is provided and its size is controlled to indicate axial information and to filter out momentary movements of the pupil.