A knock on her head, and she regained vision after a decade

But earlier this month, Reid knocked her head while bending down to kiss her guide dog Ami good night. When she woke the following morning, she could see.

Doctors could offer no explanation for the recovery but said Reid had regained 80 percent sight in her left eye.

Unsure if her sight would last, Reid waited a few hours before telephoning her mother and reading aloud the health warning on a packet of cigarettes to her to prove she could see again.