It is too bad that your source no longer sells the visor attachments. It would be simple and non-invasive, and probably a reasonably priced experiment, were they still available. I did a quick search, even trying some of my wholesale resources, and failed to find anything. except for the sunglasses and some head visors that did not look like the real deal.
I have written to the US distributor (not the main company in Norway), asking if the vehicle visors are still available, even though they are not listed on either website. I am guessing not, but receiving an answer in the negative from them will, at least, allow us to stop searching for it.
You know, I'm thinking that simply wearing the sunglasses would solve that problem in a jiffy. I know that most pharmacy stores sell sunglasses, and I imagine that some department-type stores might. Blublocker makes a variety of eyeglasses, as well as models that can easily be attached to prescription glasses, which means that these might be available where you purchase your prescription eyewear.
I will let you know what the company replies. And, if I remember to look for a pair of the sunglasses, will share how they work for me.
How about the rest of you? Have you used this product? Did you find any benefit from it?