Table 4 Open questions summarized
Method | Positivea | Negativea |
|---|---|---|
ARNS | • Easy to find the start point • Easy to align/orient the instrument • Drilling faster and safer • Easy to learn/shorter learning curve • Intuitive • All information in one display • Well-integrated guide functions • Larger display field • Smoother and more stable feedback | • Dependent on HMD • Display of frames is sometimes interrupted • Hard to algin instrument to the center of the ring • The design of the functions is complex • The blue frame occluded the view to see the drilling depth • The color changing from yellow to green is ambiguous • Hard to control depth • Concentration on 3D hologram instead of patient • Motion sickness • Need of extra instruction |
CNS | • No reliance on HMDs • Direct and easy to use • Multiple perspectives to observe and check while drilling • Depth control is better with the depth slider • More degrees of freedom in alignment | • Difficult to find the starting point • Need to switch attention between four windows • The display view changes along the tip of the instrument, which is annoying to the user • Hand eye coordination problem, need to switch attention from patient to screen constantly • Longer learning curve |
