from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The ability of a blind person to sense the presence of a light source.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The responsivity shown by some blind or partially blind people to visual stimuli of which they are not consciously aware.
blind + sight. Coined in a 1974 paper in the Lancet by Sanders et al. (Wiktionary)