Holographic Real-Space Refraction Testing Across Nine Gaze Positions
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Solution Overview
Problem
Existing eye examination instruments, such as the phoropter, are limited in assessing binocularity beyond primary gaze and block peripheral vision, leading to imbalanced refractive corrections.
Innovation Solution
A holographic eye testing system using a head-mounted display to project 3D objects in real space, allowing evaluation of refractive state and binocularity in nine cardinal positions of gaze, enabling patient interaction through hand movements and voice commands for precise measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a phoropter is used for refraction examination, then refractive correction can be determined for primary gaze, but binocularity cannot be assessed in other meridian positions and peripheral vision is blocked
Solution Approach 1:
The patent transitions from a fixed, single-position phoropter examination to a multi-dimensional assessment by enabling evaluation in nine cardinal positions of gaze (up, down, left, right, and intermediate positions). This dimensional expansion allows comprehensive binocularity assessment that was previously impossible with traditional instruments.
Solution Approach 2:
The invention creates a universal examination system that can assess multiple parameters (refraction, binocularity, peripheral vision) across multiple gaze positions simultaneously. The system replaces the specialized, single-function phoropter with a multi-functional platform that adapts to various examination needs.
2Measurement precision
If a phoropter is positioned before the patient's face, then refraction can be performed, but peripheral vision is blocked producing an abnormal environment
Solution Approach 1:
The patent extracts the examination functions from the bulky, vision-blocking phoropter instrument and integrates them into a head-mounted display system. This removes the harmful peripheral vision restriction while preserving and enhancing the measurement capabilities through digital and holographic technologies.
Solution Approach 2:
The invention replaces the mechanical phoropter system with a digital/head-mounted display system. This substitution eliminates the physical obstruction of peripheral vision while maintaining refraction measurement capability through electronic and optical methods.
3Ease of operation
If traditional refraction instruments are used, then examination can be conducted, but the environment becomes abnormal affecting attentional visual process intensity
Solution Approach 1:
The patent creates a virtual copy of the examination environment through head-mounted displays and holographic projections. This virtual environment replicates the necessary examination conditions without the harmful effects of physical instruments, allowing natural attentional visual processes to occur.
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 accurate assessment of refractive errors and binocularity across multiple gaze positions, providing personalized lens prescriptions that improve visual acuity and balance by overcoming the limitations of traditional instruments.
Implementation Method 1
systems and methods for providing a visual examination using holographic projection in real space and time
Implementation Method 2
The combiner lenses can be positioned at a periphery of the user's eyes such that the combiner lenses do not block a field of view of the user
Implementation Method 3
a variable focus lens positioned below the combiner lenses such that the variable focus lens is between the holographic display device and the combiner lenses
Implementation Method 4
Refraction means to bend light. Persons with myopia (nearsightedness), hyperopia (farsightedness) and astigmatism (two different power curves) performed a refraction to correct the refractive state and blurred vision of the patient
Data Source
AI summary
A method for testing for visual impairment is provided. The method includes rendering, via a computing device communicatively coupled to a head mounted holographic display device, a virtual target displayed to a user within the holographic display device. The method further includes rendering, via the computing device, at least one virtual light within a field of vision of the user within the holographic display device. The method also includes identifying, via the computing device, whether input was received from the user, wherein the input comprises an indication that the user identified the at least one virtual light. The method further includes generating, via the computing device, a map identifying one or more locations that the user identified the at least one virtual light or did not identify the at least one virtual light.