Um, no. I am an optician, and a former optical lab manager, Your statement is close, but let me expound on it a bit. Actually, it is true in the sense if they are fitted that way -otherwise, false. However, the 'center of the lens' as you put it, is rarely the
optical center of the lens-that point at which no light is refracted. The 'center of the lens' is what is known in the lab as the geometric center of the lens. If the optical center is placed there, it usually results in unwanted prism- it will 'pull' the eye down, unless the Rx correction is small- under 2 diopters. (Prentice's Rule)
Toric lenses (astigmatism-glasses) use a toroid curve on the back surface of the lens to refract light to accomodate for irregularities in the corneal surface. If you are myopic, you may see a phenomenon known as 'edge compression' near the edges of the lenses, but things should be clear inward of that, unless your OC height is set incorrectly. (This is true whether the lens is toric or spherical.) I'm not sure what a hyperope would see, none have ever described it to me.
I fit shooters for shooting specific glasses all the time-it's actually how I started as an optician. I was a lab tech who shot, so I knew what shooters needed, so I got called out to the floor when a shooter came in. You just set the OC of the dominant eye, or both eyes, up and in nasally. The glasses will be useless for anything but shooting, but they do help a lot.
As for frame angle, that is a very individual thing. I have about 15 degrees of pantoscopic tilt, tops are out farther than the bottoms, Some see better with zero tilt, some with retroscopic tilt. (tops closer to eyes than bottoms.
A more correct way to say what I think you meant is: "Glasses (toric or not) are best when the
optical center is set over the center of the pupil."
Shooting glasses just have the OC set where to pupil will be while shooting.
I use to have a couple sets I made, but that was twenty years ago when I had a lab and 'junk' (rejected) lenses to make them from.
Huh? Do you mean a multifocal? They all do that....