FDF Visual Field Assessment with Integrated Optic Nerve Imaging
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Solution Overview
Problem
Current methods for evaluating the visual field are inefficient in detecting early signs of diseases that affect vision and do not effectively combine structural assessments of the optic nerve head, leading to suboptimal diagnostic performance, especially for conditions like glaucoma.
Innovation Solution
A method and device utilizing FDF (flicker-defined form) stimuli in conjunction with a computer-controlled system, integrating perimeter, confocal laser scanning, OCT interferometer, or laser ophthalmoscope to enable simultaneous detection and evaluation of both functional and structural changes in the eye, including the optic nerve head, with features like real-time fixation monitoring and adaptive threshold algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual field evaluation methods are used, then the examination process is simple, but early signs of disease processes cannot be detected efficiently
Solution Approach 1:
The patent combines functional visual field assessment with structural optic nerve head evaluation into a single integrated examination system. This merging allows simultaneous acquisition of both functional data (visual field sensitivity) and structural data (optic nerve morphology), thereby improving detection precision for early disease signs while maintaining examination efficiency through automated computer-controlled presentation and analysis
2Reliability
If visual field examination and structural assessment are performed separately, then each assessment can be conducted independently, but diagnostic performance for diseases like glaucoma is suboptimal
Solution Approach 1:
The system integrates multiple examination modalities (visual field testing and optic nerve head imaging) into a unified device that coordinates both assessments simultaneously. This combination improves diagnostic reliability by correlating functional and structural findings, while the automated coordination of the integrated system manages the complexity through computer-controlled operation
Solution Approach 2:
The examination system is designed to perform multiple functions: visual field sensitivity measurement, optic nerve head structural assessment, and integrated analysis of both datasets. This multi-functionality approach enhances diagnostic performance for various eye conditions including glaucoma, while the system manages operational complexity through automated coordination of all assessment modalities
3Reliability
If automated computer-controlled FDF stimulus presentation is used, then subjective assessments are minimized, but the system complexity increases
Solution Approach 1:
The patent replaces manual, subjective visual field assessment with an automated computer-controlled system that presents FDF stimuli and analyzes responses objectively. This substitution of mechanical/manual operations with automated computational control improves evaluation reliability by eliminating subjective bias, while the software-based control system manages the complexity through algorithmic coordination rather than mechanical complexity
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
This approach allows for a reliable, efficient assessment of the visual field, enhancing diagnostic performance by combining functional and structural changes, and is suitable for various eye conditions, including glaucoma, while minimizing subjective evaluations and optimizing reliability.
Implementation Method 1
OCT interferometer
Implementation Method 2
The reflected light beam is captured by the image acquisition unit
Data Source
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Figure 3
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AI summary
The invention relates to a method for assessing the field of vision, wherein FDF stimuli are produced and detected by a person using the at least one eye to be examined. The invention is based on the object of providing a novel method and a device in order to efficiently assess the field of vision of a person and/or in order to recognize early signs of disease processes, which can lead to limitations in the field of vision. For this purpose, the invention provides that the production of the FDF stimuli is carried out by utilizing a computer-controlled system for the efficient determination of the vision and that the respective FDF stimulus is generated by utilizing an imaging device.