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Force Feedback of Dual Force-sensing Instrument for Retinal Microsurgery

Last updated: 02/11/2013


Retinal surgery is a very delicate procedure requiring small and accurate movements. This procedure can benefit largely from the use of robot, which can reduce error and invasiveness as well as speed up the operation and recovery time. One existing problem with retinal surgery is the maximum acceptable magnitude of force by the tip of the instrument on the eye tissue is below the perceptible threshold. In addition, although the force exerted by the instrument on the sclera is above the sensing threshold, excess force may also be deleterious. It is our goal to test various methods of alerting the surgeon when the force applied to the eye tissue or the sclera is near or past the acceptable range using a novel retinal surgery instrument that is able to sense both the tip and sclera force. From the results, we will be able to conclude which combination of force feedback method provides for optimal operation proceedings.

Goal: To develop and assess different force feedback methods (auditory, haptic, etc.) for a dual force sensing instrument for retinal microsurgery

  • Students: Can Wang, Sally Hong, Will Yang
  • Mentor(s): Xingchi He, Dr. Iulian Iordachita, Dr. Russel Taylor

Background, Specific Aims, and Significance

A paragraph or so here. Give background of the problem. Explicitly state specific aims (numbered list is good) and explain why they are important


  • Minimum: (3/15/2013)
    1. Minimum five person test to analyze the effectiveness of:
    2. auditory feedback on auditory tip force feedback, haptic sclera force feedback
    3. auditory feedback on the sclera, haptic feedback on the tip force
    4. auditory feedback on both the sclera and tip force
  • Expected: (Expected by date)
    1. IRB approval of use of outside volunteers for the study
    2. Virtual phantom simulation of the retina to produce estimated axial force, which would allow us to produce haptic feedback on both the tip and the scleral force
  • Maximum: (Expected by date)
    1. deliverable 1
    2. deliverable 2
    3. etc

Technical Approach

here describe the technical approach in sufficient detail so someone can understand what you are trying to do


describe dependencies and effect on milestones and deliverables if not met

-Access to Hackerman Robotorium and the Eye Robot. Will not be able to conduct any studies.

-Ability to use the dual force sensing surgery instrument. Will not be able to study methods of force feedback.

-Availability of the retina phantom. Will not be able to simulate surgical settings. Minimum deliverable not met.

-Budget to develop vibrotactile device. Will not be able to achieve maximum deliverable.

-Budget to develop force sensing retina phantom. Will not be able to achieve maximum deliverable.

Milestones and Status

  1. Milestone name: xxxxx
    • Planned Date: xxxx
    • Expected Date: xxx
    • Status: xxx
  2. Milestone name: xxxxx
    • Planned Date: xxxx
    • Expected Date: xxx
    • Status: xxx
  3. Milestone name: xxxxx
    • Planned Date: xxxx
    • Expected Date: xxx
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Reports and presentations

Project Bibliography

* here list references and reading material

Other Resources and Project Files

Here give list of other project files (e.g., source code) associated with the project. If these are online give a link to an appropriate external repository or to uploaded media files under this name space.

courses/446/2013/446-2013-08/446-2013-08.1361331011.txt.gz · Last modified: 2019/08/07 12:05 (external edit)