For experienced surgeons (which I define as those who have done at least a few thousand cataract surgeries), the microscope view of the procedure is sufficient to understand the nuances of the surgery. The hand motions and instrument positioning is understood by the experienced surgeon, but this is not as easy for the surgeons who are earlier in the learning curve.
This video shows a resident surgeon operating and we incorporate double camera angles: the microscope view and the simultaneously the external view showing the positioning of the instruments. This type of video is very helpful in learning the techniques that are required to achieve excellent surgical outcomes.
click below to learn from this resident video with double camera angles: