What is the difference between a medical navigation optical binocular camera and a normal binocular camera?

Not the same, medical business navigation camera and um, normal ordinary navigation bi-directional item you are not the same, so that I think that his optical optics a little bit higher, it will allow people to achieve a good um, the world and um, for the role of medical students is very big, otherwise he can not achieve a normal effect, and ordinary camera is just a very simple photographic, um, Liu Ying a thing, so that's why the two of them are not the same