Bryant Dental have been extremely helpful all the way through the process of purchasing loupes. They were not only willing to take many calls and answer questions that I had, but also came to meet with me personally to determine all necessary measurements. It was at that meeting that I was convinced to go with Bryant Dental, partly because of their fantastic service, but also because, in my opinion, they genuinely offer the best loupes on the market. They also allowed me to test the whole range, just to make sure I had chosen the best magnification for me. I would thoroughly recommend Bryant Dental for anyone thinking of purchasing loupes- you can't go far wrong!