As consumer obeying the forum guidelines I'd like to clarify a distinction about these two lens types.
I've read a great deal of the threads here that concern office lenses and have read many of the manufacturers sites as well. The informative posts here led me to think that office lenses are the way to go. So, I walked into a local optical shop and without an exam I explained that I want office lenses and why and the proprietor's response was that Executive bifocals are better for what I want. All of my research was dashed. Any further discussion at the optical shop (about the differences between the two) was vague and unsatisfying.
So, without an Rx-specific question I would like to clarify the distinction. I do understand that with the Executive BF there is a line and the two correction amounts are uniform from edge to edge. And, with the Office lens there is a sort of an hourglass shaped region that is usable and progressive. What I don't understand is how, if this is correct, either plays out in day to day usage in terms of comfort, posture, natural head position/movement and fatigue, etc.
I want to be able to look at my screen (at the end of my finger tips) or the manuals open on my desk without switching glasses or unnatural head movement. I can do this now if I back away a bit to look at documents on my desk - which is OK for a moment or so. For the longer (10 feet) "office" distance I don't think I care if I look through the lens, over the top of the lens or take the glasses off. I am getting the impression that when looking at someone across a table -- looking through the lens would be the most natural and comfortable. But, I don't know that for sure or if that can be achieved with both lens types.
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