Light Field Microscopy for Ophthalmic Surgery Depth Perception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ophthalmic surgery systems lack incorporation of motion parallax, which provides crucial positional information essential for accurate navigation and manipulation during delicate eye surgeries, despite its importance in human vision.
Innovation Solution
A system incorporating a light field camera and processing resource to convert light into digital information, including image and directional data, which is then displayed as a 3D image with motion parallax using a 3D visual display, enabling surgeons to perceive depth and movement accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If monocular or conventional 3D microscopic images are used in ophthalmic surgery, then the surgical visualization is provided, but motion parallax information is lost, reducing depth perception and positional accuracy
Solution Approach 1:
The patent transitions from conventional 2D or static 3D microscopy to light field microscopy that captures 4D information (x, y, z, and directional data). By recording light rays from multiple angles and depths simultaneously, the system preserves motion parallax information that would otherwise be lost, enabling dynamic depth perception when the surgeon moves their head or viewing angle changes.
Solution Approach 2:
The light field camera creates a comprehensive optical copy of the surgical field by capturing not just the image but also the directional information of light rays. This complete optical replica allows the surgical scene to be viewed from multiple perspectives and depths, preserving motion parallax effects that provide accurate depth and positional information during surgery.
2Loss of information
If light field microscopy is implemented to capture motion parallax, then visual information and depth perception are enhanced, but system complexity increases
Solution Approach 1:
The light field camera serves multiple functions simultaneously: it captures the surgical image, records depth information, and preserves directional light ray data all in a single device. This multi-functionality consolidates what would otherwise require separate systems, managing complexity by integrating diverse capabilities into one universal instrument.
Solution Approach 2:
The patent replaces complex mechanical multi-camera systems or post-processing setups with a single light field camera that optically captures all necessary information in one shot. The light field approach substitutes mechanical complexity with optical elegance, using the physical properties of light to encode multiple dimensions of information simultaneously.
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
Enhances visual information and accuracy during ophthalmic surgeries by providing motion parallax, allowing for more precise surgical instrument control and improved surgical outcomes.
Implementation Method 1
a microlens array projects microimages onto the photosensor
Implementation Method 2
converting light in these microimages to digital information using a photodetector in the light field camera
Data Source
AI summary
A system and method for ophthalmic surgery in which a light field camera is used to capture a digital image of the surgical field including the eye. The digital image is used to create image information and directional information, which is then used to from a three dimensional (3D) image with motion parallax.