Loss of the power to comprehend written materials despite preservation of the ability to write (i.e., alexia without agraphia). This condition is generally attributed to lesions that "disconnect" the visual cortex of the non-dominant hemisphere from language centers in the dominant hemisphere. This may occur when a dominant visual cortex injury is combined with underlying white matter lesions that involve crossing fibers from the occipital lobe of the opposite hemisphere. (From Adams et al., Principles of Neurology, 6th ed, p483)
Also Known As:
Alexia, Pure; Alexia Syndrome Without Agraphia; Pure Alexia Without Agraphia; Pure Word Blindness; Visual Verbal Agnosia; Agnosia, Visual Verbal; Agnosias, Visual Verbal; Agraphia, Alexia Without; Agraphias, Alexia Without; Alexia Without Agraphias; Alexias, Pure; Blindness, Pure Word; Blindnesses, Pure Word; Pure Alexias; Pure Word Blindnesses; Verbal Agnosia, Visual; Verbal Agnosias, Visual; Visual Verbal Agnosias; Without Agraphia, Alexia; Without Agraphias, Alexia; Word Blindness, Pure; Word Blindnesses, Pure; Alexia Without Agraphia