RE: If you wear glasses... HELP!
Listen to John. Shorten the drawlength of the bow and get the string in front of you where it belongs. Then you don't have to turn your head, which causes you to look through the corner of the lens.
Now about the "Verifier", not Rectifier. It's made by Specialty Archery and fits their Superball Peep. There is also a Hunter version which uses a tube aligner, has a bigger hole, and accepts a Verifer with a larger diameter. The lenses come in 4 diopters. You'll have to try them to see which may work the best.
They're not cheap, but may help. About $13 for the peep and $26 for the lens.
Best bet is to try the drawlength suggestion first. It doesn't cost anything but time.