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A workflow to visualize vertebrate eyes in 3D.

Jiayun Wang1, Sabine Baumgarten1, Frederic Balcewicz1

  • 1Department of Ophthalmology, RWTH Aachen University, Aachen, Germany.

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Summary

Researchers developed a 3D eye visualization workflow using histological data from animal models. This method enables precise surgical planning and aids in designing intraocular implants, improving experimental outcomes and animal welfare.

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Area of Science:

  • * Ophthalmic research
  • * Veterinary anatomy
  • * Medical imaging

Background:

  • * Standard histological protocols for whole eyes often produce artifacts, hindering 3D reconstruction.
  • * Accurate 3D visualization of ocular anatomy is crucial for planning complex surgical procedures.
  • * Existing methods struggle with straightforward 3D visualization of serial eye sections.

Purpose of the Study:

  • * To establish a novel workflow for 3D visualization of surgical anatomy from histological data of animal eyes.
  • * To improve the planning of complex surgical procedures in experimental animals.
  • * To create a basis for 3D modeling and simulation of ocular structures.

Main Methods:

  • * Enucleation and histological processing (hematoxylin and eosin staining) of mouse, rat, and rabbit eyes.
  • * Generation of virtual image stacks and 3D point clouds from single sagittal sections.
  • * Application of stepwise rotation and projection to construct rotationally symmetric 3D models.
  • * Analysis of tissue shrinkage for biometric reconstructions.

Main Results:

  • * A workflow was established to generate 3D eye models from single sagittal sections, overcoming artifacts from serial sections.
  • * Biometric reconstructions accounting for tissue shrinkage were achieved, enabling accurate 3D modeling and simulation.
  • * The resulting 3D models provide detailed microscopic views of ocular structures.

Conclusions:

  • * A pseudorealistic 3D model was reconstructed from single sagittal sections, suitable for surgical planning in small animal eyes.
  • * This approach aids in preventing surgical complications, supports intraocular implant development, and enhances surgical teaching.
  • * Further integration of mechanical properties is needed for a virtual reality simulation platform.