Holographic Eye Testing System for Binocular Refraction

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Solution Overview

Problem

Conventional eye examination methods, such as the phoropter, are limited in assessing binocularity beyond primary gaze positions and restrict peripheral vision, leading to incomplete refractive corrections and potential overcorrection or imbalance.

Innovation Solution

A holographic eye testing system that uses a head-mounted display to project three-dimensional objects in real space, allowing patients to interactively adjust virtual objects to assess refractive state and binocularity in nine cardinal positions of gaze, enabling precise measurement of dioptric power and cylindrical correction through hand movements or voice commands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a phoropter is used for refraction examination, then refractive correction can be determined, but peripheral vision is restricted and binocularity cannot be assessed in non-primary gaze positions

Engineering Contradiction:

Improverefractive correction accuracyVSAvoidgaze position assessment capability

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent transitions from a two-dimensional phoropter interface to a three-dimensional virtual environment where objects can be positioned and manipulated in multiple spatial dimensions. This allows assessment of binocularity across nine cardinal positions of gaze by presenting stereoscopic images that maintain proper vergence and accommodation relationships, overcoming the limitation of primary gaze-only assessment.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent replaces the mechanical phoropter system with a computational holographic display system. Instead of physically moving lenses and prisms in front of the patient's eyes, the system uses computer-generated stereoscopic images that can be dynamically adjusted in virtual space, eliminating the mechanical constraints and peripheral vision blockage of the phoropter.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If a phoropter is positioned before the patient's face, then refraction can be performed, but peripheral vision is blocked creating an abnormal environment

Engineering Contradiction:

Improverefractive measurement capabilityVSAvoidperipheral vision restriction

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent creates virtual copies of visual stimuli in a computer-generated environment rather than using physical lenses and prisms. The stereoscopic images are rendered to appear at specific distances and positions in virtual space, allowing refraction measurement without requiring physical optical elements that block the patient's view of the real environment.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

By moving the refraction examination from the physical world to a virtual three-dimensional space, the system eliminates the need for physical apparatus positioned in the patient's field of view. The holographic display presents visual targets that exist in virtual space, allowing the patient to maintain natural peripheral vision while undergoing refraction assessment.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Measurement precision

If the phoropter blocks peripheral vision, then refraction can be measured, but attentional visual process intensity is affected causing overcorrection or imbalance

Engineering Contradiction:

Improverefractive power determinationVSAvoidrefractive correction balance

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent replaces the mechanical phoropter with a software-based virtual reality system that presents refraction targets in stereoscopic space. This substitution eliminates the psychological and physiological stress of having a large mechanical device positioned in the patient's face, creating a more natural viewing environment that prevents overcorrection and produces more reliable refractive measurements.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 comprehensive evaluation of refractive state and binocularity in multiple gaze positions, providing accurate and balanced refractive corrections by allowing patients to subjectively adjust virtual objects, thereby improving visual acuity and reducing the risk of overcorrection.

Implementation Method 1

using holographic projection for each eye

Methodology Applied

Scientific EffectHolographic projection:

Data Source

PatentUS11253149B2Holographic real space refractive sequence

Publication Date: 2022.02.22 VEYEZER LLC

AI summary

A system and a method for holographic eye testing device are disclosed. The system renders one or more three dimensional objects within the holographic display device. The system updates the rendering of the one or more three dimensional objects within the holographic display device, by virtual movement of the one or more three dimensional objects within the level of depth. The system receives input from a user indicating alignment of the one or more three dimensional objects after the virtual movement. The system determines a delta between a relative virtual position of the one or more three dimensional objects at the moment of receiving input and an optimal virtual position and generates prescriptive remedy based on the delta.