Project Page - Posterior Caosule Polishing
Posterior Capsule (PC) polishing is a specific and delicate procedure that has demonstrated value towards improving surgical outcomes of lens extraction, yet is not commonly performed by surgeons due to the risk of PC rupture. A potential way to avoid such complication and increase surgical safety is automating this procedure with a precise robotic system that accurately tracks a polishing trajectory generated from the anatomy captured by an Optical Coherence Tomography (OCT) system. The robotic system is integrated with the OCT system that is capable of providing visual feedback to the robot. The developed system was evaluated through a set of experimental trials on ex-vivo pig eyes and shown to be capable of performing automated PC polishing with no surgical complications. The developed technology is expected to lead to improvements in cataract procedures or other techniques which are difficult or infeasible to perform with traditional methods.
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This project used the existing IRISS robot and integrated OCT system.
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The PC polishing process visualized through intra-operative OCT B-scans. Glue and kenalog mixture was injected into the eye to represent residual lens materials. The Irrigation/Aspiration (I/A) handpiece was used in this procedure.
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Representational comparison (a) before and (b) after PC polishing at the same cross-sectional plane.