It means writing for the blind or blind. Specialized music reading, writing and notation systems for visually impaired people.
Any writing system for the blind. From the Greek 964; 965; 966; 955; 959; 962; ( "blind" typuffs ) 947; 961; 945; 966; 949; 953; 957; ( grafein "write" ) . See tiflotechnology, braille.