Visually impaired See Spirits?

I wanted to share something that i found interesting, A friend of mine. has a eye disorder witch

effects her central Vision , She only has perifiall vision -sees ouy of the corners of her eyes-,She has a gift of seeing spirits and other entities and she hates it, Researchers say that most people see ghosts out of the corners of there eyes and now I think thats completely true . It would be interesting to do a study on The visually impaired to see what they can see