French musician, educator, and inventor of a writing and printing system for visually impaired or sightless people (829). He lost his sight at the age of three.

• 布莱叶，路易斯：(809-852)法国音乐家、教育家和供视力障碍或失明者使用的书写和印刷符号体系的发明者（829年），他在三岁时失明