My mother in law is an optometrist and I sent her the link - she doesn't seem too impressed: "The immediate problem I see with this is that people can already

My mother in law is an optometrist and I sent her the link - she doesn't seem too impressed: "The immediate problem I see with this is that people can already see with their distance correction anything that is 33cm (83.82")(6.9 ') from their eyes to infinity. The problem that bifocals fix is the distance from 20" to the eyes or near vision! I don't know if this person is over 40 or not, but if so he should realize this. This type of technology is similar to what a progressive or "no-line" bifocal does at present."