02-15-2007, 03:27 PM
Decocritter- the 'down in front' troubles can be true of bi-focals, too.
The lens section for seeing close is fixed focus. The area at your feet is out of range.
If you're looking through the reading glass section of lens to see down in front of you at three feet it will be blurry. Most likely worse than no glasses at all.
.
If you are taking your glasses off to 'see' a computer screen you might be better served to have progresives or bi-focals with a focal distance for further away (about 20" for computer screen) and have seperate reading glasses. (cheap if you can use non-prescription)
Reading glass focal distance is (IIRC) about 14".
I went with the computer screen focal distance because it would minimize how often I switched glasses (actually I can still read fine without reading glasses, but I shouldn't).
The lens section for seeing close is fixed focus. The area at your feet is out of range.
If you're looking through the reading glass section of lens to see down in front of you at three feet it will be blurry. Most likely worse than no glasses at all.
.
If you are taking your glasses off to 'see' a computer screen you might be better served to have progresives or bi-focals with a focal distance for further away (about 20" for computer screen) and have seperate reading glasses. (cheap if you can use non-prescription)
Reading glass focal distance is (IIRC) about 14".
I went with the computer screen focal distance because it would minimize how often I switched glasses (actually I can still read fine without reading glasses, but I shouldn't).