Auditory and visual characteristics
Population 16 years old and over by sex, level of studies of  main breadwinner and if they have difficulty for seeing.
Units: thousands of persons and percentages

	Total	Yes difficulty	No difficulty	
ABSOLUTE FIGURES	
    Both genders	
        Total	35,361.4	1,626.4	33,735.0	
        Illiterates and without studies	4,976.3	572.9	4,403.4	
        Primary and Secondary Education of first cycle	18,429.7	750.3	17,679.4	
        Secondary education of second cycle and post-secundary	6,796.7	165.8	6,630.9	
        University	5,158.6	137.4	5,021.2	
    Males	
        Total	17,249.8	571.7	16,678.2	
        Illiterates and without studies	2,290.4	222.2	2,068.2	
        Primary and Secondary Education of first cycle	9,025.4	261.7	8,763.7	
        Secondary education of second cycle and post-secundary	3,488.9	56.2	3,432.6	
        University	2,445.1	31.5	2,413.6	
    Females	
        Total	18,111.6	1,054.8	17,056.8	
        Illiterates and without studies	2,685.9	350.7	2,335.2	
        Primary and Secondary Education of first cycle	9,404.3	488.5	8,915.7	
        Secondary education of second cycle and post-secundary	3,307.9	109.6	3,198.3	
        University	2,713.5	105.9	2,607.5	
RELATIVE FIGURES	
    Both genders	
        Total	100.00	4.60	95.40	
        Illiterates and without studies	100.00	11.51	88.49	
        Primary and Secondary Education of first cycle	100.00	4.07	95.93	
        Secondary education of second cycle and post-secundary	100.00	2.44	97.56	
        University	100.00	2.66	97.34	
    Males	
        Total	100.00	3.31	96.69	
        Illiterates and without studies	100.00	9.70	90.30	
        Primary and Secondary Education of first cycle	100.00	2.90	97.10	
        Secondary education of second cycle and post-secundary	100.00	1.61	98.39	
        University	100.00	1.29	98.71	
    Females	
        Total	100.00	5.82	94.18	
        Illiterates and without studies	100.00	13.06	86.94	
        Primary and Secondary Education of first cycle	100.00	5.19	94.81	
        Secondary education of second cycle and post-secundary	100.00	3.31	96.69	
        University	100.00	3.90	96.10	
Notes:
1) The data about to crossing of the category 'If they have difficulty'   with 'Secondary education of second cycle and post-secundary' and  'University' must be viewed with caution, because they may be  affected by high sample errors  
Source: National Statistics Institute and Ministry of Health and Consumption