In article ,
newshound wrote:
At my more advanced age (70 +) I certainly feel that my "prescription"
can sometimes vary through the day. I'm not sure whether this is because
it actually does, or whether it is an effect of continually reducing
accomodation (so that I notice the effect more).

Think at 70, your eyes are likely pretty well fixed focus.

My optician, a couple of years ago, initially gave me slightly more plus
than needed for infinity. Not something you'd notice in the consulting
room. But did when driving. His answer was it was a compromise most liked.
I didn't.

--
*Never put off until tomorrow what you can avoid altogether *

Dave Plowman London SW
To e-mail, change noise into sound.