Static and dynamic accuracy of vitreoretinal surgeons

Peral-Gutierrez, F.; Liao, Anna; Riviere, Cameron N.

doi:10.1109/iembs.2004.1403783

Cited by 20 publications

(18 citation statements)

References 8 publications

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“…Maintaining the instrument's orientation is required in order to refer the laser spot position The results suggest that the accuracy of tracing is better with the help of laser light spot as a visual feedback since the user can see the target and the visual feedback throughout the test. That solves the problem of occlusion existed in [11] although there is a need to maintain the instrument's orientation (both pan and tilt angles) constant.…”

Section: Resultsmentioning

confidence: 94%

“…to maintain the position of the laser spot on the marker. Unlike the system in [11], the movement of the marker is not discrete. Therefore, there is no need for the subjects to interpolate between discrete steps.…”

Section: Target Platformmentioning

confidence: 88%

“…However, surgeons were asked to hold a tool motionless without a visually prominent target to allow monitoring of tool position, likely causing to increase the magnitude of drift. In [11], Riviere et al setup an experiment using ASAP and measured accuracy and physiological tremor amplitude in both static and dynamic in 3D. Manuscript However, in the dynamic tasks (tracking and tracing) performed in [11], while some trials show relatively accurate results, several trials exhibit tracking or tracing curves that have too big errors.…”

Section: Introductionmentioning

confidence: 98%

“…In [11], Riviere et al setup an experiment using ASAP and measured accuracy and physiological tremor amplitude in both static and dynamic in 3D. Manuscript However, in the dynamic tasks (tracking and tracing) performed in [11], while some trials show relatively accurate results, several trials exhibit tracking or tracing curves that have too big errors. It is reported that this may be due to partial occlusion of the viewing field by the marker ball and the interaction of this effect with the stereo view provided by the operating microscope.…”

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

System to Assess Accuracy of Micromanipulation

Latt

Tan

Veluvolu

et al. 2007

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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The authors had previously developed an optical micro motion sensing system (M2S2) using a pair of orthogonally placed position sensitive detectors (PSD) to track 3D displacement of the tip of a microsurgical instrument in real-time. In the M2S2 system, an infrared (IR) diode is used to illuminate the workspace. A ball is attached to the tip of an intraocular shaft to reflect IR rays onto the PSDs. Instrument tip position is then calculated from the centroid position of reflected IR light on the PSDs. The M2S2 system together with a test platform is used as an evaluation system to assess the accuracy and physiological tremor of subjects performing micromanipulation tasks. Since the need to use the ball at the instrument tip prevents the subjects from performing the manipulation tasks precisely, a laser light is provided as a guide for the subjects to aim at the target precisely. A laser diode module is placed inside the instrument to provide the required laser light. The instrument intraocular shaft is replaced with a same-sized hollow tube to let the laser light from the instrument pass through down to the target. The laser light spot position on the platform is used to access the performance of the subjects. The laser light spot position is calculated from the tilt angle information provided by an accelerometer placed inside the instrument, and the instrument tip position information given by M2S2.

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Section: Resultsmentioning

confidence: 94%

Section: Target Platformmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

System to Assess Accuracy of Micromanipulation

Latt

Tan

Veluvolu

et al. 2007

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

View full text Add to dashboard Cite

show abstract

“…However, surgeons were asked to hold a tool motionless without a visually prominent target to assist in tool positioning, likely causing to increase the magnitude of drift. In [11], Riviere et al setup an experiment using ASAP and measured accuracy and physiological tremor amplitude in both static and dynamic in 3D. Manuscript However, in the dynamic tasks (tracking and tracing) performed in [11], while some trials show relatively accurate results, several trials exhibit tracking or tracing curves that have errors that are too big.…”

Section: Introductionmentioning

confidence: 98%

Design and implementation of a two degree-of-freedom micromanipulation assessment system

Latt

Ananda

Ong

et al. 2008

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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A two degree-of-freedom (DOF) micro motion sensing system to assess micromanipulation accuracy and physiological tremor has been developed. The system employs a position sensitive detector (PSD) module and a laser diode placed inside an instrument used in micromanipulation. A laser light is shined from the laser diode onto the PSD surface which is faced upward. The PSD detects the centroid position of the laser light spot falling onto its surface. A few markers are overlaid in a circular pattern on the PSD surface as reference for path dependent tests. Ambient light disturbance is eliminated by modulating the laser light on and off. Advantages and limitation of the system comparing to other similar systems are described.

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Hybrid position/force control of an active handheld micromanipulator for membrane peeling

Wells

Yang

MacLachlan

et al. 2015

Robotics Computer Surgery

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Background Peeling procedures in retinal surgery require micron-scale manipulation and control of sub-tactile forces. Methods Hybrid position/force control of an actuated handheld microsurgical instrument is presented as a means for simultaneously improving positioning accuracy and reducing forces to prevent avoidable trauma to tissue. The system response was evaluated, and membrane-peeling trials were performed by four test subjects in both artificial and animal models. Results Maximum force was reduced by 56% in both models as compared to position control. No statistically significant effect on procedure duration was observed. Conclusions A hybrid position/force control system has been implemented that successfully attenuates forces and minimizes unwanted excursions during microsurgical procedures such as membrane peeling. Results also suggest that improvements in safety using this technique may be attained without increasing the duration of the procedure.

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Static and dynamic accuracy of vitreoretinal surgeons

Cited by 20 publications

References 8 publications

System to Assess Accuracy of Micromanipulation

System to Assess Accuracy of Micromanipulation

Design and implementation of a two degree-of-freedom micromanipulation assessment system

Hybrid position/force control of an active handheld micromanipulator for membrane peeling

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