Flower,
Can you explain the glasses a little more?

My dd had glass prescribed by a behavioral optometrist which are essentially bifocals -- clear glass on the top (she has 20/20 vision) and a special lens on the bottom to help her focus her eyes. She is to wear them for "up close work" like reading, writing or math. The doctor explained that without the glasses the words and numbers were jumping around on the page for her.

Her teacher described them as "prism glasses" which is the only time I had heard the term. Does this sound similar or is it a completely different vision issue?