I am an optometrist and I feel no threat whatsoever from this technology because:
1. It can’t assure good physical eye health, which is the most important thing I provide to my patients
2. It is just another way to gather data. I use data from several sources to arrive on a final Rx, which seldom matches any one data source exactly. It is both art and science!
3. This is a classic case of caveat emptor. Most will be back.
4. Ditto for online eye wear dispensers, except perhaps for very basic lens designs.