Visual Acuity Testing With Anti-Aliased Display Calibration
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Solution Overview
Problem
Existing methods for determining visual acuity are limited by the variability of devices and ambient conditions, leading to inconsistent test performance and reduced accuracy, particularly when conducted remotely, and lack user-friendly interaction.
Innovation Solution
A computer-implemented method using anti-aliasing to generate graphical representations with discontinuities on displays, adjusting the acuity test based on device resolution and user responses, and utilizing a control unit to refine acuity levels through multiple steps and user interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual acuity tests are performed remotely on various devices, then accessibility and convenience are improved, but test consistency and accuracy deteriorate due to varying device characteristics and ambient conditions
Solution Approach 1:
The system dynamically adjusts display parameters including luminance, contrast, and stimulus size based on detected ambient lighting conditions and device characteristics. This ensures that test stimuli are presented under standardized conditions across different devices and environments, maintaining measurement precision while enabling remote accessibility.
Solution Approach 2:
The system incorporates feedback mechanisms where users provide information about their viewing conditions and device specifications. This feedback is used to automatically adjust test parameters and compensate for variations in display characteristics, ensuring consistent and accurate acuity measurement across diverse remote testing scenarios.
2Measurement precision
If manual adjustments are required to standardize test conditions, then measurement precision is improved, but ease of operation deteriorates due to increased complexity and time consumption
Solution Approach 1:
The system performs self-adjustment by automatically detecting ambient lighting conditions, device specifications, and user responses. It autonomously modifies display parameters and test configurations without requiring manual user input, thereby maintaining measurement precision while significantly simplifying the user experience and reducing operational complexity.
Solution Approach 2:
The system performs preliminary measurements and adjustments before the actual acuity testing begins. It pre-calibrates display parameters based on device characteristics and environmental conditions, establishing standardized test conditions in advance. This preliminary action eliminates the need for manual adjustments during testing, improving both precision and ease of operation.
3Device complexity
If test stimuli are displayed at fixed sizes on displays with varying resolutions, then device complexity is reduced, but measurement precision deteriorates due to inability to standardize across devices
Solution Approach 1:
The system dynamically changes stimulus size and display parameters based on detected device resolution and characteristics. By automatically scaling test stimuli to appropriate sizes for each device, the system maintains consistent measurement precision across varying resolutions without requiring complex manual configuration or user involvement.
Data Source
AI summary
A computer implemented method and corresponding computer program product and device determine an indication of a user's acuity level. The methods and devices facilitate performance of acuity tests in a decentralized manner while establishing a desired test accuracy irrespective of a particular type of device or display, to determine the indication in a reliable manner. A computer implemented method includes the steps of: performing an optical acuity test using a control unit in communication with a device display having a predefined resolution; and displaying the optical acuity test on the display. The displayed optical acuity test includes a graphical representation with a discontinuity and prompts the user to identify the discontinuity by providing a response. The control unit and display provide that the optical acuity test is adjusted by generating and displaying the discontinuity based on the response and based on anti-aliasing using one or more display pixels.