Vision Screening System Using Light Beam Positioning
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Solution Overview
Problem
Existing vision screening devices are cumbersome, complex, and lack accuracy due to difficulties in determining the precise positioning required for different vision tests, leading to inconsistent and inaccurate results.
Innovation Solution
A vision screening system comprising a base, an emitter with a light source, and a controller that generates beams of visible radiation to guide the patient's positioning, ensuring accurate alignment for visual acuity and refractive error tests, and includes a display to output images and provide automated diagnosis recommendations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple vision tests are performed using separate devices at different distances, then comprehensive vision screening is achieved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines multiple vision testing functions (visual acuity testing, refractive error testing, and convergence testing) into a single integrated device. The device includes a display unit for presenting visual stimuli, a light source for refractive error measurement, and sensors for detecting eye responses. This merging eliminates the need for multiple separate devices and reduces setup complexity while maintaining comprehensive screening capability.
Solution Approach 2:
The vision screening device is designed to perform multiple types of vision tests through a single unified system. The device can switch between different testing modes (acuity, refraction, convergence) and automatically adjusts its configuration for each test type, making it a universal vision screening tool that adapts to different testing requirements without requiring separate specialized devices.
2Measurement precision
If vision tests are performed at different distances, then accurate vision measurements are achieved, but ease of operation and measurement precision worsen due to positioning difficulties
Solution Approach 1:
The patent replaces manual positioning and distance measurement mechanisms with an electronic distance measurement system. The device includes sensors and processors that automatically calculate the distance between the device and the patient's eyes, eliminating the need for manual measurement and positioning. This substitution ensures accurate distance maintenance for different test types while simplifying operation.
Solution Approach 2:
The device incorporates real-time feedback mechanisms that monitor the distance between the device and the patient's eyes. The system provides visual or auditory feedback to guide the patient into the correct position and automatically adjusts testing parameters based on the measured distance, ensuring measurement accuracy while making the process easier to operate.
3Device complexity
If manual positioning and distance measurement are used, then device simplicity is maintained, but measurement precision and reliability deteriorate
Solution Approach 1:
The vision screening device performs self-positioning and self-measurement functions. The integrated sensors automatically detect the patient's eye position and distance, and the system autonomously adjusts testing parameters without requiring manual intervention for positioning or measurement. This self-service capability maintains device simplicity while achieving high measurement precision through automated electronic systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system improves the accuracy and consistency of vision screening by ensuring proper patient positioning and providing automated diagnosis, enhancing the reliability of visual acuity and refractive error assessments.
Implementation Method 1
an emitter including a light source operable to generate a beam of visible radiation. The beam of radiation impinges a substantially horizontal support surface at a location approximately three meters from the emitter
Data Source
AI summary
A system includes a base, and an emitter including a light source operable to generate a beam of visible radiation. The beam of radiation impinges a substantially horizontal support surface at a location approximately three meters from the emitter when the base is disposed on the support surface and the emitter is supported by the base. The system also includes a vision screening device supported by the base, the vision screening device having a first display, and a second display opposite the first display and facing the location. The system further includes a controller operable to cause the second display to output an image included in a visual acuity examination based at least in part on generation of the visible beam.