Low Luminance Visual Dysfunction Test Apparatus
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Solution Overview
Problem
Current methods for detecting low luminance visual dysfunction, particularly in patients with age-related macular degeneration (AMD), are inefficient, prone to errors, and lack automation, making it difficult to accurately assess visual acuity in low light conditions and track disease progression.
Innovation Solution
A computer-based method and apparatus for administering a low luminance dysfunction vision test, which includes displaying characters at varying acuity levels and luminance conditions, allowing for automatic scoring and tracking of visual acuity loss, and providing a rapid, standardized, and self-calibrating system for clinical and at-home use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional high-contrast visual acuity testing is used, then visual acuity measurement is simple and fast, but it is ineffective in detecting early AMD and low luminance visual dysfunction
Solution Approach 1:
The patent changes the luminance parameter of the display from high contrast to low luminance levels, enabling detection of low luminance visual dysfunction while maintaining automated testing efficiency through computer-based presentation and scoring
2Measurement precision
If manual low luminance deficit testing is implemented, then detection accuracy improves, but human error increases and test reliability decreases
Solution Approach 1:
The system performs self-scoring and automatic calculation of low luminance deficit by comparing patient responses to correct answers, eliminating human error in scoring and ensuring consistent, reliable results across all patients
Solution Approach 2:
The system provides immediate automated feedback by comparing patient responses against correct answers and calculating scores, ensuring consistent and reliable assessment without human intervention
3Measurement precision
If comprehensive low luminance testing is conducted, then disease detection capability improves, but testing time increases
Solution Approach 1:
The patent presents a limited set of critical characters at different acuity levels and luminance conditions rather than exhaustive testing, achieving sufficient diagnostic information for AMD detection while maintaining rapid testing speed
Solution Approach 2:
The test is segmented into discrete character presentations at specific acuity levels and luminance conditions, allowing efficient automated administration and scoring of comprehensive low luminance visual function assessment
Data Source
AI summary
A method for administering a low luminance dysfunction vision test by displaying, a first character at a first acuity level on a display at a first luminance level, receiving an input signal from the patient indicating whether the patient recognizes the first character, displaying a second character at a second acuity level and the first luminance level, receiving a second input signal from the patient indicating whether the patient recognizes the second character, calculating a first score, displaying a third character at a third acuity level and a second luminance level, which luminance level replicates a specific low luminance real environmental condition, receiving a third input signal from the patient indicating whether the patient recognizes the third character, displaying a fourth character at a fourth acuity level and the second luminance level, receiving a fourth input signal from the patient indicating whether the patient recognizes the fourth character, calculating a second score and calculating a third score.