Automated Strabismus Measurement With Adjustable Optomechanical Modules
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Solution Overview
Problem
Existing methods for measuring strabismus angles are unreliable, time-consuming, and require subjective assessment, often failing to account for individual anatomical variations and refractive errors, leading to inaccurate results.
Innovation Solution
A device with optomechanical modules and cameras that dynamically adjust to individual pupillary distance and refractive errors, using alternating image projection and eye covering to automatically calculate strabismus angles based on eye movement analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual eye covering test with prismatic strips is used, then strabismus angle can be assessed, but measurement precision deteriorates due to subjective assessment and examiner dependency
Solution Approach 1:
The patent replaces the manual mechanical eye covering test with an automated optical system using cameras to capture eye movements. The mechanical prism bars are substituted with digital image processing and computer-controlled eye movement tracking, eliminating subjective assessment while maintaining measurement accuracy through objective data collection and analysis
Solution Approach 2:
The system performs self-calibration and automatic measurement without requiring examiner intervention. The camera system automatically captures images, processes eye movement data, and calculates strabismus angles through integrated software algorithms, making the measurement process independent of examiner experience and skill level
2Measurement precision
If synoptophore device is used, then strabismus angle can be measured, but device complexity increases and ease of operation deteriorates due to complicated structure and extensive examiner experience required
Solution Approach 1:
The patent extracts the essential measurement function from the complex synoptophore device by using a simplified camera-based system. Instead of requiring complex optical modules, rotating mechanisms, and multiple alignment systems, the invention uses a single camera system that captures eye movements during alternating eye covering, significantly reducing device complexity while maintaining measurement capability
Solution Approach 2:
The camera system serves multiple functions: capturing eye position, tracking eye movements, and providing data for strabismus calculation. This multi-functional approach replaces the need for separate optical modules, scales, and alignment mechanisms in traditional synoptophores, simplifying the overall device structure
3Adaptability or versatility
If fixed optical system is used, then device structure is simple, but adaptability deteriorates due to inability to account for individual anatomical variations and refractive errors
Solution Approach 1:
The patent implements dynamic adjustment of the camera system to accommodate individual anatomical variations. The optical system can be repositioned and reconfigured for each patient based on their specific eye anatomy, pupillary distance, and refractive errors, allowing the device to adapt to diverse anatomical characteristics without requiring complex custom-built systems
Data Source
AI summary
A device for automated measurements of eyeball deviation and/or vertical and horizontal observation angles, comprising optomechanical system cooperating with image recording and display devices has a screen placed in an integrated housing, in front of which two symmetrically embedded optomechanical modules are mounted on the side arms said side arms are movably embedded on parallel, horizontal guideways arranged perpendicularly in relation to the side arms and driven along these guideways with a servo drive and driving elements, wherein every optomechanical module has a camera operating in the invisible light spectrum, optical tube fixing the lens system, vision switching off system, eye pupil illuminator operating in the invisible light spectrum, where the screen is placed perpendicularly to the axis of the lens system and at a distance that allows acute viewing of the screen and covering the possibly largest part of the eye's field of view.