Binocular Adaptive Optics Visual Simulator Eye Tracking
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Solution Overview
Problem
Current binocular adaptive optics visual simulators are unsuitable for researching accommodation responses as they are designed for far viewing states with parallel visual axes, failing to accurately track eye movements and account for the cooperation between accommodation, vergence, and pupil constriction necessary for binocular vision.
Innovation Solution
A binocular adaptive optics visual simulator comprising identical left-eye and right-eye light-path simulators with beacon light generators, wavefront correctors, sensors, and scan mirrors that allow for real-time tracking of eye movements by adjusting the direction of beacon light to maintain consistent incidence angles before and after pupil deflection, enabling precise binocular visual function tests in both near and far viewing states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If binocular adaptive optics visual simulators are designed for far viewing states with parallel visual axes, then the system structure is simplified, but the system cannot accurately track eye movements and is unsuitable for researching accommodation responses
Solution Approach 1:
The patent applies dynamics by making the scan mirrors adjustable and controllable to dynamically track eye movements. The scan mirrors are no longer fixed for far viewing but can be dynamically positioned to follow the subject's eye movements during near viewing tasks, enabling accurate measurement of accommodation responses while maintaining operational simplicity through automated control.
2Ease of operation
If the beacon light direction is not adjusted for pupil deflection, then the system is easier to operate, but measurement errors are introduced due to involuntary eye deflections
Solution Approach 1:
The patent implements feedback by using wavefront sensors to continuously monitor the subject's eye position and pupil deflection. The control unit processes this feedback information and automatically adjusts the scan mirror positions to compensate for involuntary eye movements, ensuring the beacon light remains properly aligned with the pupil. This closed-loop feedback system eliminates measurement errors while maintaining ease of operation through automated adjustment.
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 precise binocular visual function tests by accurately tracking eye movements and eliminating errors caused by involuntary deflections, improving the accuracy and precision of binocular visual function assessments.
Implementation Method 1
a wavefront sensor configured to receive and sense the light from the wavefront corrector traveling in a second light path
Implementation Method 2
a scan mirror configured to direct the beacon light from the beacon light generator to a left eye or a right eye of a subject
Data Source
AI summary
A binocular adaptive optics visual simulator and a method for binocular adaptive optics visual simulation are provided. An example method may comprise: directing beacon light to a left eye and a right eye of a subject, respectively; sensing aberrations of the left and right eyes of the subject, and sensing a deflection angle of a pupil of each of the left and right eyes; correcting the aberrations based on the sensed aberrations to achieve a desired aberration configuration between the left and right eyes; and changing a direction in which the beacon light is directed based on the sensed deflection angle in such a manner that in a case where the pupil is subjected to deflection, the beacon light is incident onto the pupil of each of the left and right eyes of the subject at a substantially identical angle before and after the deflection of the pupil.