Eye Tracking Range Alerts for Precise Ophthalmic Alignment
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Solution Overview
Problem
Existing eye-tracking systems in ophthalmic surgical devices struggle with accurately tracking eye movement within a defined range, leading to potential suspension of tracking or false positives when the eye moves outside this range, thereby prolonging surgery time and compromising precision.
Innovation Solution
A system comprising a camera, computer, and output device that tracks eye movement by comparing current images with a reference image, determining movement and orientation relative to alert points within a defined tracking range, and outputs visual or auditory indicators to maintain accurate tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If eye-tracking systems use a defined tracking range with alert points, then tracking precision is improved, but tracking suspension and false positives occur when the eye moves outside the range
Solution Approach 1:
The system performs preliminary actions by providing advance warning to the user when the eye approaches the boundary of the tracking range. The alert indicator notifies the user before tracking suspension occurs, allowing the user to proactively adjust the eye position and prevent tracking loss entirely.
2Measurement precision
If the tracking range is strictly enforced, then measurement accuracy is improved, but surgery time is prolonged due to tracking suspension
Solution Approach 1:
The alert indicator provides advance notification before tracking suspension occurs, enabling the user to proactively adjust the eye position within the acceptable range. This prevents tracking loss and eliminates the time wasted on system recovery and repositioning procedures.
3Measurement precision
If the system provides detailed eye position information, then measurement precision is improved, but system complexity increases
Solution Approach 1:
The system extracts and displays only the most critical information - the alert indicator showing proximity to tracking range boundaries. This selective presentation of information maintains measurement precision while avoiding the complexity of displaying all raw eye position data.
Data Source
AI summary
In certain embodiments, a system for tracking movement of an eye comprises a camera system, a computer system, and an output device. The camera system generates images of the eye. The computer system stores the images and at least one of the images as a reference image. The computer system also tracks movement of the eye within a tracking range by comparing a current image with the reference image, and by determining a movement of the eye from the comparison of the current image and the reference image. The tracking range has one or more alert points. The computer system also determines an orientation of the eye relative to at least one alert point of the tracking range. The output device outputs a range indicator that indicates the orientation of the eye relative to the at least one alert point of the tracking range.