Q:
I love my new progressive bifocal, but why don't they work so
well at my computer?
A: Progressive Addition Lenses have a variable focus that
allows for clear vision from distance through near; today's newer
designs have been compressed to fit into smaller size frames.
While Progressive Addition Lenses work great for almost all situations
because of that variable focus ability, computer work is a tough
situation for many people with no great solution for some.
To allow for maximum size of the reading zone and minimal interference
with clear distance viewing, the compromise with the new progressive
designs is to shorten the mid-range zone, which is the part that
is in focus at the usual distance of the CRT screen. Since the
CRT screen is usually at eye level, it requires a head tilt back
to put that mid-range focus zone in view of our eyes. We then
get a combination that is less than optimal for some people.
Some suggestions to help are: 1. Back the monitor away and raise
it up so the distance part of the lens can be used. 2. Lower the
monitor so it is in view of the reading zone. 3. Consider a pair
of computer glasses that have only midrange and near, or single
vision near only. 4. Get a notebook computer, as these sit on
the desk usually within the mid-range and near zone of the lens.
5. Consider line segment bifocals or trifocals.
The use of computers and a potential need for bifocals should
be discussed with your doctor and/or your optician to maximize
performance and comfort in this situation.
