Three-dimensional accuracy assessment of eye surgeons

Overall manual accuracy in simulated microsurgery has been studied. Three eye surgeons have been tested thus far. Subjects attempted to hold a microsurgical instrument still for 30 s and its 3-D tip position was recorded. RMS error, overall motion range were calculated and spectral analysis was performed for each axis. The RMS error was between 54 /spl mu/m and 118 /spl mu/m and the overall range of motion was between 239 /spl mu/m and 588 /spl mu/m, depending on the axis. Substantial low frequency motion was present. Between 73.5% and 83.7% of the total power was found to be below 3 Hz, depending on the axis.