September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Precision in vitreoretinal surgery, manual versus assisted instrument positioning
Author Affiliations & Notes
  • Gerrit Naus
    Preceyes B.V., Eindhoven, Netherlands
  • Marc D de Smet
    Preceyes B.V., Eindhoven, Netherlands
    MIOS, Lausanne, Switzerland
  • Nicky De Jonge
    Preceyes B.V., Eindhoven, Netherlands
  • Marco Mura
    AMC Amsterdam, Amsterdam, Netherlands
  • Danilo Iannetta
    AMC Amsterdam, Amsterdam, Netherlands
  • Maarten Beelen
    Preceyes B.V., Eindhoven, Netherlands
  • Thijs H C M Meenink
    Preceyes B.V., Eindhoven, Netherlands
  • Footnotes
    Commercial Relationships   Gerrit Naus, Preceyes B.V. (E); Marc de Smet, Preceyes B.V. (E); Nicky De Jonge, Preceyes B.V. (E); Marco Mura, None; Danilo Iannetta, None; Maarten Beelen, Preceyes B.V. (E); Thijs Meenink, Preceyes B.V. (E)
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 5822. doi:
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      Gerrit Naus, Marc D de Smet, Nicky De Jonge, Marco Mura, Danilo Iannetta, Maarten Beelen, Thijs H C M Meenink; Precision in vitreoretinal surgery, manual versus assisted instrument positioning. Invest. Ophthalmol. Vis. Sci. 2016;57(12):5822.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Robot assistance (RA) can improve a surgeon’s skills, improve the reproducibility of existing procedures and enable the development of new, high-precision procedures. The PRECEYES Surgical System (www.preceyes.nl) is developed to assist in vitreoretinal (VR) surgery. Using a motion controller coupled to an instrument manipulator, instruments are controlled with high precision. In this study, positional accuracy and precision of both manual and RA instrument positioning in a VR surgery setting are compared.

Methods : Positional precision and steadiness are measured via a tracing test (Figure 1). To simulate a dynamic motion task, the surgeon moves the tip of an instrument along a square. To simulate a static task, the surgeon is asked to freeze the instrument at the corners of the square. Image analysis is used to calculate both accuracy and precision for XY and Z. Accuracy is defined by the distance between the instrument tip and the target. Precision is defined by the distance between consecutive tip positions. Each test was carried out by experienced and beginning surgeons, and repeated 3 times in a manual, an automatic and an RA setting each.

Results : All results are compared to the results of the tasks in the manual setting. In an automatic setting, accuracy and precision improve >68 and >12.5 times, respectively. In the RA setting, beginning surgeons improve both accuracy and precision >2.1 times for dynamic tasks, whilst experienced surgeons perform similar or improve only slightly. For static tasks however, accuracy and precision improve >1.9 and >3.6 times, respectively, in an RA setting for all surgeons.

Conclusions : Accuracy and precision are improved using RA of the PRECEYES Surgical System. RA is most beneficial to beginning surgeons, whilst experienced surgeons specifically benefit from RA in static tasks.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.

 

Schematic overview of the eye model (bottom) and the test setups (top).

Schematic overview of the eye model (bottom) and the test setups (top).

 

Comparison of robotic automated movement to beginning surgeon and experienced surgeon manual movement (*indicated p<0.05).

Comparison of robotic automated movement to beginning surgeon and experienced surgeon manual movement (*indicated p<0.05).

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