Robotic posterior capsule polishing by optical coherence tomography image guidance
Matthew J Gerber1, Jean-Pierre Hubschman1, Tsu-Chin Tsao2
1Stein Eye Institute, University of California, Los Angeles, Los Angeles, California, USA.
Background:
In cataract surgery, polishing of the posterior capsule (PC) can lead to improved surgical outcomes but is currently avoided due to its high-risk nature. This work developed a robotic system capable of performing PC polishing on ex vivo pig eyes using optical coherence tomography (OCT) guidance.
Methods:
The lenses of five ex vivo pig eyes were extracted and a thin layer of glue deposited onto the PC. Transpupillary OCT scans of the anterior segment were used to generate a PC-polishing trajectory. During polishing, OCT B-scans tracked the tool tip and were displayed to the operator.
Results:
Complete removal of the glue was accomplished in all five trials with no PC rupture reported.
Conclusions:
The feasibility of using a robotic system guided by OCT to perform PC polishing on a biological model was demonstrated. Contributions include modelling of the PC anatomy, intraoperative OCT visualization, and automated tool-tip motion with scheduled aspiration pressures.
More Related Videos
Related Concept Videos
01:18Imaging Biological Samples with Optical Microscopy
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:28Endoscopic Procedures III: Video Capsule Endoscopy