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Can blind people see light?

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Let me explain. I am one of a very small number of people who have no sight whatsoever. I'm properly blind. A "total" as we used to say at school. I lost my sight 31 years ago thanks to ill-advised surgery, and on my blind person's registration certificate it has three, now very faded letters - NLP, no light perception. read more

The functionally blind, for example, can see a little, but not well enough to get by without significantly altering their lives, such as by reading braille or listening to books on tape. Legal blindness is defined as falling short of a statutory standard of visual acuity: 20/200 vision in most of the United States, or 6/60 in Europe. read more

Vandewalle's study, which involved three completely blind participants, found that just a few seconds of light altered brain activity, as long as the brain was engaged in active processing rather than at rest. read more

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