> For all the skepticism at others (eye professionals at that), did he checked his enthusiasm for placebo effect?

Yes. I have two pairs of glasses here: The optician-made ones and my self-prescribed ones. I have controlled for the frame - both have the same one.

I see much better with my self-prescribed ones. If you don't believe me, feel free to drop by and we'll do a blinded (heh) test. :)