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Intraoperative adaptive eye model based on instrument-integrated OCT for robot-assisted vitreoretinal surgery
Marius Briel1,2, Ludwig Haide3, Maximilian Hess3
1Carl Zeiss AG, Oberkochen, Germany. marius.briel@zeiss.com.
International Journal of Computer Assisted Radiology and Surgery
|February 8, 2025
Summary
An adaptive eye model improves surgical precision during pars plana vitrectomy (PPV). This model uses optical coherence tomography and robotic assistance to create accurate, real-time retinal representations for safer procedures.
Area of Science:
- Ophthalmology
- Surgical Robotics
- Medical Imaging
Background:
- Pars plana vitrectomy (PPV) is a common retinal surgery.
- Need for enhanced precision and safety in PPV.
- Intraoperative models can provide critical anatomical data.
Purpose of the Study:
- Develop an intraoperative retinal model for surgical assistance.
- Improve accuracy and safety in pars plana vitrectomy.
- Adapt to individual patient eye geometries.
Main Methods:
- Utilized 1D instrument-integrated optical coherence tomography (OCT).
- Combined OCT data with surgical robot for real-time measurements.
- Employed adaptive modeling, transitioning from spherical to ellipsoidal representations.
Main Results:
- Ellipsoid fitting demonstrated superior accuracy over sphere fitting.
- Achieved mean absolute error <40 µm in simulation and <200 µm in physical models.
- Model successfully transitioned between spherical and ellipsoidal representations for various eye shapes.
Conclusions:
- The adaptive eye model meets clinical accuracy needs for PPV in the central retina.
- The model extrapolates to the retinal periphery, aiding navigation.
- Enhanced surgical navigation and virtual boundary assistance contribute to safer PPV outcomes.
