Eye-Tracking VR Rendering Adaptation for Eye-Strain Reduction

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Solution Overview

Problem

Virtual reality devices cause eye strain and motion sickness due to their immersive nature, leading to discomfort and reduced usage duration.

Innovation Solution

An eye strain detection system that monitors user eye features in real-time, adjusts rendering attributes of content, such as brightness and resolution, to reduce eye strain through machine learning and adaptive rendering techniques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If VR headsets provide fully immersive experience with proximity of lenses and display screens, then immersion quality is improved, but eye strain and motion sickness increase

Engineering Contradiction:

Improveimmersion qualityVSAvoideye strain

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically changes rendering parameters such as resolution, brightness, and field of view based on detected eye strain levels. When eye strain is detected through eye tracking, the system adjusts these parameters to reduce the harmful effects while maintaining the immersive experience, directly resolving the contradiction between immersion quality and eye strain.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system implements a feedback loop where eye tracking data is continuously monitored to detect eye strain, and this information is used to adjust rendering attributes in real-time. This closed-loop control allows the system to respond to user physiological states and modify the virtual reality experience to minimize eye strain while preserving immersion.

Inventive Principle:

Principle #23Feedback

2Duration of action of moving object

If VR headsets are used for prolonged period, then user interaction duration is extended, but eye dryness and redness occur

Engineering Contradiction:

Improveusage durationVSAvoideye dryness and redness

Core Design Contradiction:

Duration of action of moving objectVSObject-affected harmful factors

Solution Approach 1:

The system uses periodic eye tracking monitoring to detect signs of eye dryness and redness during prolonged usage. When these symptoms are detected, the system periodically adjusts rendering attributes or prompts users to take breaks, enabling extended usage while mitigating the harmful effects of prolonged exposure.

Inventive Principle:

Principle #19Periodic action

3Ease of operation

If rendering attributes are adjusted to reduce eye strain, then user comfort is improved, but visual quality and immersion may deteriorate

Engineering Contradiction:

Improveuser comfortVSAvoidvisual quality

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The system applies local quality adjustments by modifying rendering attributes selectively in specific regions or contexts rather than uniformly across the entire display. This allows the system to reduce eye strain in critical areas while maintaining high visual quality in other regions, thus resolving the contradiction between user comfort and visual quality.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250269268A1Using eye-tracking / eye metrics to detect VR eye-strain-levels, then using adaptive rendering to lower levels of eye-strain

Publication Date: 2025.08.28 SONY INTERACTIVE ENTERTAINMENT LLC

AI summary

Methods and system for providing assistance to a user during interaction with game content of a video game includes monitoring eye strain indicators of the user as the user is interacting with the game content. Eye strain metrics are computed using the eye strain indicators collected for the user. An action for performing at the video game is identified based on the eye strain metrics. The identified action is forwarded to the video game, which, upon receipt, executes a command to adjust one or more rendering attributes of the game content presented to the user. The adjustment is defined to reduce the eye strain of the user.