With him and with Rosalie, what seems to be going on and Rosalie said, What's going on? and I said that as you lose vision, as the visual parts of the brain are no longer getting any input, they become hyperactive and excitable, and they start to fire spontaneously.

And so they asked me if I would come and see Rosalie, the old lady.

But what did disturb her was she got very persistent images or hallucinations of faces and as with Rosalie, the faces were often deformed, with very large teeth or very large eyes.

With him and with Rosalie, what seems to be going on and Rosalie said, What's going on? and I said that as you lose vision, as the visual parts of the brain are no longer getting any input, they become hyperactive and excitable, and they start to fire spontaneously.

Sometimes, she said, before the people come on, she may hallucinate pink and blue squares on the floor, which seem to go up to the ceiling.

But what did disturb her was she got very persistent images or hallucinations of faces and as with Rosalie, the faces were often deformed, with very large teeth or very large eyes.

So in the Charles Bonnet hallucinations, you have all sorts of levels, from the geometrical hallucinations the pink and blue squares the woman had up to quite elaborate hallucinations with figures and especially faces.