VR Vision Testing With Brain Feedback for Adaptive Assessment

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Solution Overview

Problem

Existing methods for visual acuity assessment are limited in their ability to dynamically adjust test parameters and are not suitable for home-based vision testing using household devices, leading to less accurate assessments.

Innovation Solution

Implementing a virtual vision test using a head-mounted display (HMD) with integrated cameras and electrodes, or wireless communication with wearable devices, to capture eye images and electrical signals, and determine eye health conditions through real-time analysis of eye movements and responses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional methods for visual acuity assessment are used, then the testing process is simple and can be performed with basic equipment, but the assessment accuracy is reduced and dynamic adjustment of test parameters is not possible

Engineering Contradiction:

Improveassessment accuracyVSAvoidtesting system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The HMD device integrates multiple functions including visual stimulus display, eye movement tracking via cameras, electrical signal collection via electrodes, and wireless communication with external devices. This multi-functional integration enables comprehensive vision assessment with dynamic parameter adjustment while using a single wearable device platform.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent replaces traditional mechanical vision testing equipment with a digital/virtual reality system. Visual stimuli are rendered digitally on the HMD display, eye movements are tracked optically via cameras capturing eye images, and neural responses are measured electrically via electrodes, substituting mechanical assessment methods with optical and electrical measurement systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If traditional vision testing equipment is used, then the equipment is simple and affordable, but home-based testing is not feasible and clinical setting requirement increases accessibility barriers

Engineering Contradiction:

Improvehome-based testing capabilityVSAvoidtesting system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system enables autonomous vision testing where the HMD automatically presents visual stimuli, tracks eye movements in real-time, collects electrical signals from the user's head, and transmits data for analysis without requiring constant clinician intervention or complex manual operation by the user.

Inventive Principle:

Principle #25Self-service

3Extent of automation

If traditional static vision tests are used, then the testing procedure is straightforward, but dynamic adjustment of test parameters based on real-time feedback is not possible

Engineering Contradiction:

Improvereal-time dynamic adjustmentVSAvoidcontrol system complexity

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The system implements real-time feedback loops where eye movement data captured by cameras and electrical signals from electrodes are continuously analyzed, and this feedback is used to dynamically adjust subsequent visual stimuli parameters such as size, contrast, duration, and presentation timing, enabling adaptive vision assessment.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The testing system transitions from static pre-defined test protocols to dynamic adaptive testing where test parameters are continuously modified in real-time based on user responses. Visual stimuli characteristics and presentation schedules are adjusted dynamically during the test session to optimize assessment accuracy.

Inventive Principle:

Principle #15Dynamics

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

Enables dynamic adjustment of test parameters and allows for accurate vision testing in extended reality environments, making vision testing more accessible and affordable for patients.

Implementation Method 1

capturing a sequence of eye images using the camera of the electronic device

Methodology Applied

Scientific EffectLight reflection: Reflection

Implementation Method 2

collecting a plurality of electrical signals by a plurality of electrodes that contact a head of a user

Methodology Applied

Scientific EffectElectrical signal detection: Conduction (electrical)

Data Source

PatentUS20260000289A1Methods and systems for applying brain activity feedback in vision tests in virtual environments

Publication Date: 2026.01.01 ZENNI OPTICAL

AI summary

Brain activity can be monitored to facilitate a vision test in a virtual reality (VR) environment using an electronic device that includes a head-mounted display (HMD) and a plurality of electrodes. The electronic device can execute a user application configured to enable a virtual vision test, and generates a VR user interface corresponding to a three-dimensional (3D) virtual environment. The electronic device renders, on the HMD, a user interface including a first visual stimulus corresponding to the virtual vision test. While displaying the visual stimulus, in real time, the electronic device collects a plurality of electrical signals by the plurality of electrodes that contact a head of a user, and determines information of at least one of a second visual stimulus following the first visual stimulus and a user response to the first visual stimulus based on the plurality of electrical signals.