Disability, Independence and Dependency Situations Survey 
Absolute figures
Population with visual impairments, who use the Braille system, by age and sex 
Unidades: thousands of persons 6 years old and over

,Both sexes,Males,Females,
Total,11,4,5,8,5,6,
6 to 64 years old,8,1,4,7,3,4,
65 to 79 years old,3,2,1,1,2,1,
80 years old and over,0,1,0,0,1,
Notas:
The data corresponding to cells with fewer than 5 thousand persons must  be viewed with caution, because it may be affected by  large sampling errors. 
Fuente: National Statistics Institute