Donegan (the company that developed the original optiVISOR) makes a clip-on light for their like the ones others have described. Here's their catalog page for it:
https://doneganoptical.com/product/visorlight/
I would have sworn they made a version with the lights built in, but I can't find it now at their website. I may be thinking of knock-offs of the OptiVISOR.
I have a cheap Red Chinese knock-off visor that I got at a show years ago. It really helped, but I decided after I started using it, that I wanted additional light, aimed along my line of sight. I figured that when I wore my old one out, I'd upgrade to a model with built-in lights.
In the meantime, I bought this style of magnifier, which seems to be gaining in popularity these days:
https://www.aliexpress.com/item/32921448580.html
It does put good, focused light right where I need it, but I found that the weight of the battery pack is irritating on the bridge of my nose. Also, despite having 6 different lenses in increasing magnification, none of them provide the same magnification as the loupe on my visor. So I don't use this one; I just can't get used to it.
I don't think the clip-on light for OptiVISORs would cause the same problem, since the weight is on the visor and distributed via the strap around your head.