Thorne and Sarsa's character Salome for A3 comes with a 4_SalomeEyes_FIX.pz2 file that resets the eyes after applying a 3rd party pose that messes them up. The odd thing is that the x and y-trans that are set in the pz2 file don't match the parameter dials. Here is some of the code:

actor leftEye:1
. . .
        translateX xtran
            {
            initValue -0.0025
            hidden 0
            keys
                {
                k  0  -0.0025
                }
            }
...

But when you are inside Poser the parameter dial for xTran shows -0.258 (or 0.25800002 to be exact). Most of Thorne and Sarsa's characters have these eye fix poses, and for their V4 based models the code and the parameter dials match up. What's going on?

The value in the file is in Poser Native Units ( PNU = 8.6 feet = 262.128 cm), what you see in the UI depends on the unit of measure that you have selected. Poser does the conversion automatically.

Bingo! I guess the reason I didn't notice the mismatch in the V4 characters is that the numbers happened to be pretty much the same except for the leading zeros, and my eyes just didn't pick that up.