Better=easier to look thru, without blackness appearing in one eyepiece or the other.
Maybe it has to do with how the eyeglasses fit on me? I have astigmatism equally in both eyes being able to wear eyeglasses when viewing is better than not wearing them.
For accuracy purposes, probably should add that these are not the newest version of Ultravids.
Last edited by thisisallen : Friday 26th June 2020 at 19:52.
Reason: Additional info