On Tue, 05 Sep 2006 06:24:58 -0400, Cubdriver usenet AT danford.net
wrote:

On Tue, 05 Sep 2006 10:08:31 +0100, wrote:

pages that have straight sides were not parallel.

Interesting. The glasses presumably were correcting for a problem that
your mind had already corrected for.


I'm sure that's right. I discoverd after all those years that's why
binoculars were difficult to get properly focussed. It was die to
astigmatism. I had not found any problem until the perspective was
change with the glasses. What amazes me it I wear the glasses all the
time but apart from a change of focus I don't see the perspective
change with glasses off or on.

I read long ago that if you wear lenses that invert the world, after a
few days it will turn right-side-up. Then, when you take the lenses
off, the world appears upside-down.


Yes I saw that demo on TV a number of years ago, amazing what the
brain can do.

I surely had a lot of trouble learning to land the Cub. Could it have
been the glasses?

I suspect if you wear glasses all the time you can't blame the glasses
- sorry :-)