And yeah folks the ABC/Director's cut that includes the extended dialogue has been seen since 1982---you might want to check it out!
If my memory serves me correctly, the "look over the top of the lenses" line was actually not
in the special, longer ABC cut of the movie first broacast in 1985. I don't think that particular line of dialogue shows up until the 2002 "Director's Cut" DVD. It's possible that the Tenutos never new that, after twenty years, the "filmed but never released" scene actually had
finally been released.
"Gentlemen, we're debating in a vacuum. Let's go get some answers."
It's a little complicated...
There are 3 versions of the glasses scene......
1. the theatrical (Kirk knows what they are)
2. the ABC/DC (Kirk asks and Mccoy tells him)
3. an even longer version I saw in the rough cut 'workprint' they hace at UCLA film school in LA.
In that version Kirk is a little unsure of how to use the glassess and McCoy tells him to look down to read and look over the top to see normally.
So it was shot in it's entirety and cut 3 different ways.