>>290730756
the kinect is almost useless for fbt, but if you have an index you have lighthouses which are essential to the only real FBT solution: Vive trackers (pucks). They're expensive but it's really all there is unless you're an engineer who wants to experiment with webcams and and pose estimation and feed it into steamvr.

Myopia is a problem. All VR headset lenses have a focal distance around 7m, so the screen is an inch from the lens, but the light is bent so it's like you're looking at a distant object. Variable focus headsets aren't yet available for consumers, they might be adjustable for myopia in the future. 

You'll need glasses or contact lenses while using your headset and glasses can easily scratch it.