How useful do you find the additional depth cue of the 3D monitor? What is that you can see on the 3D monitor that you cannot already see on a regular 2D monitor? You can perceive depth more directly and slightly move your head to see a bit behind structures, but I’m wondering if this is something really significant.
Regardless of resolution, price, ease of use, etc. - 3D monitors cannot compete with the HoloLens unless they make the image appear as floating inside the patient. The main challenge in using the HoloLens is not about image quality, but
- how conveniently (and quickly and accurately) you can align the virtual model with the patient
- how to keep the model position and shape up-to-date during the procedure as things move around
- how to interact with the device: there are many options - hand gestures, voice commands, controller in sterile bag - but each has its own limitations
- how to wear it: it is quite comfortable, but you may still want to flip it up or remove from your head beause it still darkens the view a little bit or may add some extra glare, and may be in the way if you want to use a microscope
Still, if you think seeing the 3D model inside the patient in the correct physical location could be useful then it is worth a try. You would need a technician to help with it in the OR (prepare the visualization, put and remove the device from your head, help with controls, etc.)