Studio Shots of Eyewear Frames Questions

NikonsandVstroms

I've done work on objects in the studio before but the main worry I have with these is making it so you don't see the light in the lens. I was planning to use 2 soft boxes with a white background for good coverage and even light since these are product shots and for most of the styles the lenses can be popped out but not all. I've got a week and a few samples to mess around with so basically I'm looking for any tips especially for the ones with lenses, but any other advice is greatly appreciated so I can hopefully save some trial and error time.