George,
That's the way no-lines are made -- the prescription portion of the lens is shaped like an hourglass, distance at the top, near at the bottom. The result is that you have a wedge at each side with no prescription. Some people never get used to the waviness at the side. Some even get seasick!
My optometrist is a baseball person. He says that nothing an umpire does requires near vision. He's wrong but only because of lineup cards. I use distance vision only clear glasses for the plate and night games and DVO sunglasses for the field, when needed. The clear glasses are a lot smaller than the sunglasses to make it easier to get a mask off.
My prescription corrects to 20/15 which works fine but that makes it even harder to read lineup cards. I just look over the top of my glasses or take them off.
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