Dynamic Visual Assessment Using Randomized Contrasting Features

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Solution Overview

Problem

Traditional methods for assessing visual functions, such as visual acuity and contrast sensitivity, rely on static letters or pictograms that may not be culturally familiar or require cognitive processing, potentially confounding the results and adding unnecessary cognitive load.

Innovation Solution

A computer-implemented method using animations with randomized, dynamic, contrasting background and foreground features, where the foreground areas have attributes that differ from the background and change continuously, allowing for targeted assessment of visual functions without requiring cognitive processing beyond visual perception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional static letters or pictograms are used for visual assessment, then the assessment can be performed with simple display equipment, but the results may be confounded by cultural familiarity requirements and cognitive processing demands

Engineering Contradiction:

Improveaccuracy of visual function assessmentVSAvoidcomplexity of animation generation and display system

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent transforms static visual assessment stimuli into dynamic animations where background and foreground elements continuously change properties such as position, size, opacity, and color. This dynamic presentation eliminates cultural recognition biases and cognitive processing requirements while maintaining measurement precision for visual functions like acuity and contrast sensitivity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent systematically varies multiple parameters including temporal frequency, spatial frequency, contrast ratios, and color properties of both background and foreground elements. By controlling these parameter changes, the system isolates specific visual functions being assessed while eliminating confounding factors related to cultural familiarity and cognitive processing.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If culturally specific letters or pictograms are used, then the assessment content is familiar to certain populations, but it introduces cultural bias and requires additional cognitive processing

Engineering Contradiction:

Improveease of visual perceptionVSAvoidpurity of visual function measurement

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent creates foreground elements with distinct local qualities that differ from the background in specific visual properties (contrast, color, motion patterns) while both elements share the same dynamic animation characteristics. This allows the assessment to target specific visual functions without requiring cultural recognition or cognitive processing of familiar symbols.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10147221B2Visual function targeting using randomized, dynamic, contrasting features

Publication Date: 2018.12.04 KONAN MEDICAL USA INC

AI summary

A solution for targeting a visual function of an observer is provided. The solution presents an animation for display to an observer. The animation includes a background and at least a portion of the animation also includes one or more foreground areas, each of which is located in a portion of the background. The background and the foreground area(s) include a set of common attributes substantially continuously changing during the animation and at least one different attribute between the background and the foreground area. At least one attribute of the background changes randomly during the animation. The at least one different attribute targets the visual function.