That is one of the best IOLs out there and not a premium IOL.
Maybe you should head out to BP
JCH MD
She had AMO advanced medical optics put in model #za9003
If you mother had a "premium" IOL put in the eye ReZoom, ReStor or Crystalens then this could represent an extreme form of IOL induced dysphotopsia.
If you want to go out of area BP in Miami is one of the best in the world.
JCH MD