Dual Display Eyesight Testing System with Adaptive Optotypes
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Solution Overview
Problem
Current systems for testing and correcting visual defects lack precision in detecting and addressing localized retinal issues and visual impairments, particularly in children, as they fail to effectively engage and maintain attention and do not provide adaptive stimulation for varying visual conditions.
Innovation Solution
A system comprising a computer-controlled dual-image display setup with adjustable 3D backgrounds and optotypes of varying type, size, color, contrast, and brightness, along with a binocular correction device that uses lenses, prisms, and 3D separation filters, allowing for dynamic adjustment and feedback-driven optotype generation to identify and correct visual deficits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single image display device is used for visual testing, then the device complexity is reduced, but the ability to test multiple visual conditions and ranges (near and far) is limited
Solution Approach 1:
The system employs a single image display device that can dynamically switch between displaying distant optotypes and close-up optotypes, thereby serving multiple testing functions (distance and near vision testing) without requiring separate dedicated devices for each purpose. This multi-functional approach resolves the contradiction by achieving versatility through a unified platform.
Solution Approach 2:
The image display device is configured to dynamically change the display content and focal distance requirements during testing. The system can present optotypes at different distances and adjust the testing conditions in real-time, allowing one device to adaptively cover multiple visual testing scenarios that would traditionally require multiple static devices.
2Measurement precision
If traditional visual testing methods are used, then the testing procedure is simple, but the detection precision for localized retinal issues is insufficient
Solution Approach 1:
The correction device incorporates multiple lenses and prisms with different optical properties arranged in specific configurations. Each lens/prism element provides localized correction for specific visual defects, allowing the system to precisely target and detect localized retinal issues by matching specific optical corrections to specific problem areas.
Solution Approach 2:
The system uses feedback from the test subject's responses to visually presented stimuli to iteratively refine and optimize the correction settings. By presenting optotypes under various correction conditions and analyzing subject responses, the system precisely determines the optimal lens/prism configuration for detecting and correcting specific retinal defects, thereby enhancing detection precision.
3Reliability
If conventional testing methods are used, then the testing process is straightforward, but the ability to maintain attention and engage test subjects (especially children) is reduced
Solution Approach 1:
The system dynamically changes multiple parameters of the visual stimuli including color, contrast, brightness, size, and type of optotypes during the testing process. These parameter variations make the testing more engaging and less monotonous for test subjects, particularly children, thereby maintaining their attention and improving test reliability without requiring overly complex device architecture.
Solution Approach 2:
The testing system employs periodic presentation of different optotype sequences, colors, and configurations to maintain subject engagement. By regularly varying the stimulus parameters in a structured periodic manner, the system keeps test subjects (especially children) interested and attentive throughout the testing duration, improving reliability through sustained engagement.
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 enhances detection and correction of visual defects by engaging test subjects, particularly children, through adaptive and attention-maintaining visual stimuli, and provides precise identification and correction of localized retinal issues, improving visual performance and reducing visual deficits.
Implementation Method 1
at least one binocular correction device is arranged in front of the test person's eyes, on which different lenses and/or Prisms and/or 3D separation filters can be activated
Implementation Method 2
at least one binocular correction device is arranged in front of the test person's eyes, on which different lenses and/or Prisms and/or 3D separation filters can be activated
Implementation Method 3
at least one binocular correction device is arranged in front of the test person's eyes, on which different lenses and/or Prisms and/or 3D separation filters can be activated
Data Source
Figure 1
AI summary
The invention relates to a system for testing the eyesight and detecting and correcting visual defects, comprising a human subject (10) with two eyes (12; 16), at least one image display device (40; 50) which is designed to display three-dimensional images and on which at least one test chart (41; 51) containing at least two optotype zones (411, 412; 511, 512) can be displayed, and at least one computer (60) for controlling the at least one image display device (40; 50). In order to create a system with improved detection, evaluation and correction of visual defects, according to the invention, the system includes at least one first image display device (40) for the far range and at least one second image display device (50) for the close range, the distances (47; 57) of said image display devices from the eyes (12; 16) of the subject (10) being different, the computer (60) allows, by means of software that can be run thereon, optotypes of different types, sizes, colors, contrasts and/or brightness to be generated on the test charts (41; 51) and different three-dimensional backgrounds to be generated on the image display devices (40; 50), and at least one corrective device (30), on which different lenses and/or prisms (322, 323, 324; 342, 343, 344) and/or 3D separating filters (321; 341) can be activated, is placed in front of the eyes (12; 16) of the subject (10).