Adaptive Visual Training Device for Non-Central Field Stimulation
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Solution Overview
Problem
Conventional visual perception training methods for subjects with visual field defects are inconvenient as they require specific distances and heights between the display and the subject's eye position, limiting the application of stimuli to only specific depths and not allowing continuous stimulation of the non-central visual field.
Innovation Solution
A training method and device that presents virtual objects on a screen, allowing them to move from a distant to a closer position, dividing or removing them, and presenting additional objects to stimulate the central and defect regions, with adjustable positions, sizes, shapes, and depths to induce concentration and improve visual perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the subject is positioned at a predetermined distance and height from the display, then the visual perception training can be performed, but the convenience for the subject deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of the display device's position and orientation based on the subject's eye position and gaze direction. The display moves along the subject's line of sight and adjusts its orientation to maintain optimal viewing angles, transforming a static fixed-position system into a dynamic adaptive system that maintains training effectiveness while improving subject convenience
Solution Approach 2:
The system automatically tracks the subject's eye position and gaze direction using sensors, and autonomously adjusts the display position and orientation without requiring manual intervention from the subject. The display serves itself by positioning optimally relative to the subject's natural viewing behavior, eliminating the need for the subject to maintain specific body positions
2Device complexity
If the distance from the subject's eye position to the display is predetermined, then the training setup is simplified, but the ability to apply stimulus at various depths deteriorates
Solution Approach 1:
The display device dynamically adjusts its distance from the subject's eye position along the gaze direction, enabling stimulation at multiple depths. The system maintains simple setup by automatically determining optimal distances based on real-time eye tracking data, transforming a fixed-distance constraint into a dynamic multi-depth capability
Solution Approach 2:
The system adds the depth dimension to stimulus presentation by moving the display along the subject's line of sight. This transforms a two-dimensional display plane into a three-dimensional stimulus space, allowing objects to be presented at various distances from the subject while maintaining straightforward setup procedures
3Ease of manufacture
If the object moves from a distant position to a closer position in the central visual field, then concentration is induced, but the continuous stimulation of the non-central visual field cannot be achieved
Solution Approach 1:
The training stimulus is segmented into multiple objects presented at different locations and depths. While one object moves in the central visual field to induce concentration, other objects are simultaneously presented in the non-central visual field to provide continuous stimulation, dividing the training function across multiple independent elements
Solution Approach 2:
The system maintains continuous stimulation of the non-central visual field by presenting multiple objects that remain visible in peripheral regions throughout the training session. While the central object moves to engage attention, peripheral objects ensure uninterrupted stimulation of the non-central visual field, achieving both concentration induction and continuous peripheral stimulation
Data Source
AI summary
Disclosed are training method, program and computing device to ameliorate visual field defect. The method includes presenting, by a computer, a virtual first object on a screen, wherein the first object is presented in an approaching manner toward the subject from a first position to a second position, when a position of the first object reaches the second position, the dividing, by the computer, of the first object into objects and presenting the divided objects on the screen or removing, by the computer, the first object from the screen, when the first object is divided or removed, presenting, by the computer, a virtual second object and a virtual third object on the screen, and receiving, by the computer, an identification input about the second object and the third object from a response input device of the subject.