the ability of a blind person to sense accurately a light source or other visual stimulus even though unable to see it consciously.
Origin of blindsight
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the ability to respond to visual stimuli without having any conscious visual experience; it can occur after some forms of brain damage
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012