Great question. I hope someone has a researched, academic answer. Until then,
I'll chime in 'cause this question's been sitting here all day.
The apparent distance to the display and ground glass is a bit more than a
meter, if I recall correctly. That's why I ordered "progressives" (bifocals
with a gradual gradient, kids) with a wide area of transition. The newbie
selling the glasses kept pushing a formulation "with the widest area of close
focus" and I kept saying "no". I told him I needed a mild correction at 3 feet
and that's what I got.
As to calibration, I don't have a serious answer other than to find out what
works. It might change with eye strain or if you have the camera on an
inverted column. In a few years I suppose I'll be too old for that kind of
posture.
Lama
> From: "Fast Primes" <fast_primes@xxxxxxxxxxx>
for those who wear glasses (particularly
> progressives), how do your OM4 (or 3) diopter correction for minimal eye
> fatigue? Possible, it might be a good aidea to not use progressives, but a
> particlar single vision lenses optimized for a distance X?
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