8 weeks ago while shopping I was hit on on top of the head with a heavy weight. While shopping in a department store in the toy department I was checking out sleds on an end aisle. While looking at the sleds on the second shelf the sleds (about 60 of them) fell from the top shelf, all at once, and landed on top of my head, to my shoulder and then the floor. Caught completely off guard, never saw it coming. I currently have a case going with the store and have been getting therapy on my back/shoulder and neck.
I have always had good vision. However, I have recenty noticed that after my therapy,during which time I am face down for approx. 30 min, I have a very difficult time seeing clearly. Close seems okay. Seeing far away (4 ft or more) seems to be the problem.
Today it took over an hour for my vision to regain it's normalcy.

Any ideas or thoughts as to what would be causing this?