"Leon" wrote:

Speaking of that, I know several years ago the better Canon 35mm
cameras could detect where you were looking in the view finder and
would automatically focus at that distance. Surely a similar device
could be used, similar to a web cam, that would detect where you
were looking on the screed and enlarge that line of text.

If the text isn't formatted so that it is easy to read (Including "no
squint" type size), I just move on to the next posting.

Lew