I haven't used a usb microscope but my understanding is that depth perception can be a real problem. I use an AmScope binocular stereo microscope. It does have a port for a camera that blocks one lens. If I want to record, I would use a separate usb microscope. This is rather pricey and I just happened to get a great deal at an auction. There are cheaper options, but that may give you an idea of the ideal optics. The barlow lens helps with the wider field of view and the lights are great. Another option is a headband magnifier like this. It may be enough an even if not, would still come in handy when the scope is overkill.

I finally broke down and got the OptiVisor. Amazing.

https://www.amazon.com/Donegan-OptiVisor-Headband-Magnifier-Magnification/dp/B0015IN8J6

(What this means is that I need reading glasses or bifocals. Crap.)