Friendly, no. Objective, yes.
What isn't reasonable is to expect a lawyer to pass on a potential client.
The complete loss of left-side vision happened since this incident. It was peripheral vision that he had lost, and the onset was gradual enough that he didn't notice.
The vision system is more than just a pair of eyeball cameras. The brain does a considerable amount of image processing as well. When it merges the images from the two eyes, small blind spots (dead pixels?) in one can be filled in with information from the other. That works well enough for things that both eyballs can see, but that was not the situation here.
If anything, this is evidence of the need for frequent eye-tests of senior drivers.
The DMV in my state only checks you once every 10 years. What good is that? I go to my eye doctor every 2 as it is. But even that would not help with a tumor or abscess that ate up my peripheral vision over a period of, say, 6 months.
(Guess I'll just check it meself. Yup, so far, so good.)