A patient explains: How I went blind - then started hearing colours

It took 72 hours for Vanessa Potter to lose her sight.


Just 72 hours — that’s all it took for me to lose my sight entirely, and for my hands and feet to feel like they were encased in ice.


Just before my blindness hit, I had been laid up with an unknown virus that had left me with severe headaches and sweats.

My body’s immune system had gone haywire, responding to the virus by attacking my own nerves, and causing my loss of sight and mobility. In fact, you could say I had been struck down by