Sounds like the layers of laminate within the monitor glass have cracked and that is why it looks so funky. I am not an expert by any means, but I have seen it a few times when I worked for Ford Motor co. We had laptops in the shop for diag and every so often one would take a tumble and need repair.

Depending upon the model, replacement parts can be found and the unit repaired; screens can be fairly simple to replace if you are handy. The alternative would be a laptop shop, but then you would need to weigh cost of repair vs replacement of the laptop.