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Auditory Feedback Effectiveness for Enabling Safe Sclera Force in Robot-Assisted Vitreoretinal Surgery: a Multi-User

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Auditory feedback enhances safety in robot-assisted retinal surgery. This system warns surgeons about dangerous sclera forces during eye movements, improving surgical precision and preventing eye damage.

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Area of Science:

  • Robotics
  • Ophthalmology
  • Surgical Technology

Background:

  • Robot-assisted retinal surgery offers improved safety for delicate procedures.
  • Robot stiffness diminishes surgeon's tactile feedback of tool-to-tissue interaction forces (sclera force).
  • Dynamic eyeball manipulation during surgery can drastically increase sclera forces, posing risks.

Purpose of the Study:

  • To evaluate the efficacy of auditory feedback for enhancing safety in robot-assisted retinal surgery.
  • To mitigate risks associated with dynamic eye manipulations and unfavorable sclera forces.
  • To improve surgeon's ability to manage sclera forces during robotic procedures.

Main Methods:

  • Simulated patient head movements using a piezo-actuated linear stage to create disturbances.
  • Utilized the Johns Hopkins Steady-Hand Eye Robot (SHER) in a multi-user experiment.
  • Twelve participants performed mock retinal surgery with force sensing instruments and auditory feedback.

Main Results:

  • Auditory feedback enabled participants to manage simulated eye motion disturbances effectively.
  • Sclera forces were maintained within safe boundaries when auditory feedback was provided.
  • The system enhanced surgeon's control during dynamic eye manipulations.

Conclusions:

  • Auditory feedback based on measured sclera force is effective in improving safety during robot-assisted retinal surgery.
  • This feedback system helps surgeons maintain control and prevent damaging forces during dynamic eye movements.
  • The findings support the integration of auditory feedback to enhance performance and safety in robotic ophthalmic surgery.