Villager posted two comments to my previous post with very detailed information about his negative experience with two pairs of Superfocus glasses, both of which he returned. He's still waiting for his refund. This is all too typical these days.
One of the primary reasons I ordered Superfocus was because it emphasized that the entire lens is usable. Villager contradicts this. That's something that I will determine as soon as my Superfocus glasses arrive.
All along I have had two concerns, both of which Villager addressed:
1. Looking up from something close to something far. The issue here is whether the benefit of Superfocus outweighs this known limitation. My current trifocal progressive lens accommodates this but with its intrinsic compromises: small reading area and some dead areas.
2. The nature of the slider to change focus. I wonder how easy it is to move with one hand and to quickly achieve a desired focus. I also wonder how that opening can remain clean and functional.
I often watch TV and read, often on my laptop or tablet or smart phone. Superfocus will probably not accommodate this habit. I could, of course, continue to use my progressive lens during this activity and use Superfocus at other times, especially outdoors when I seem to need to switch between distance only glasses and progressive, which I find disorienting during physical activity.
When the Superfocus glasses arrive I will post my views, hopefully each day during my evaluation period. I may create videos but have not decided.