Sex;Social class;Vision;Degree of difficulty;Total BOTH SEXES;Total;Near vision;Total;100.00 BOTH SEXES;Total;Near vision;Without difficulty;89.45 BOTH SEXES;Total;Near vision;With some difficulty;7.59 BOTH SEXES;Total;Near vision;With severe difficulty;1.47 BOTH SEXES;Total;Near vision;Unable to do so;1.49 BOTH SEXES;Total;Far vision;Total;100.00 BOTH SEXES;Total;Far vision;Without difficulty;91.77 BOTH SEXES;Total;Far vision;With some difficulty;4.83 BOTH SEXES;Total;Far vision;With severe difficulty;1.11 BOTH SEXES;Total;Far vision;Unable to do so;2.28 BOTH SEXES;I;Near vision;Total;100.00 BOTH SEXES;I;Near vision;Without difficulty;93.43 BOTH SEXES;I;Near vision;With some difficulty;4.10 BOTH SEXES;I;Near vision;With severe difficulty;0.44 BOTH SEXES;I;Near vision;Unable to do so;2.03 BOTH SEXES;I;Far vision;Total;100.00 BOTH SEXES;I;Far vision;Without difficulty;94.14 BOTH SEXES;I;Far vision;With some difficulty;2.22 BOTH SEXES;I;Far vision;With severe difficulty;0.47 BOTH SEXES;I;Far vision;Unable to do so;3.17 BOTH SEXES;II;Near vision;Total;100.00 BOTH SEXES;II;Near vision;Without difficulty;92.61 BOTH SEXES;II;Near vision;With some difficulty;5.53 BOTH SEXES;II;Near vision;With severe difficulty;0.61 BOTH SEXES;II;Near vision;Unable to do so;1.24 BOTH SEXES;II;Far vision;Total;100.00 BOTH SEXES;II;Far vision;Without difficulty;93.48 BOTH SEXES;II;Far vision;With some difficulty;3.37 BOTH SEXES;II;Far vision;With severe difficulty;0.66 BOTH SEXES;II;Far vision;Unable to do so;2.49 BOTH SEXES;III;Near vision;Total;100.00 BOTH SEXES;III;Near vision;Without difficulty;91.77 BOTH SEXES;III;Near vision;With some difficulty;5.32 BOTH SEXES;III;Near vision;With severe difficulty;1.01 BOTH SEXES;III;Near vision;Unable to do so;1.91 BOTH SEXES;III;Far vision;Total;100.00 BOTH SEXES;III;Far vision;Without difficulty;92.87 BOTH SEXES;III;Far vision;With some difficulty;3.33 BOTH SEXES;III;Far vision;With severe difficulty;0.79 BOTH SEXES;III;Far vision;Unable to do so;3.01 BOTH SEXES;IV;Near vision;Total;100.00 BOTH SEXES;IV;Near vision;Without difficulty;90.67 BOTH SEXES;IV;Near vision;With some difficulty;7.04 BOTH SEXES;IV;Near vision;With severe difficulty;1.19 BOTH SEXES;IV;Near vision;Unable to do so;1.10 BOTH SEXES;IV;Far vision;Total;100.00 BOTH SEXES;IV;Far vision;Without difficulty;92.55 BOTH SEXES;IV;Far vision;With some difficulty;4.62 BOTH SEXES;IV;Far vision;With severe difficulty;0.91 BOTH SEXES;IV;Far vision;Unable to do so;1.91 BOTH SEXES;V;Near vision;Total;100.00 BOTH SEXES;V;Near vision;Without difficulty;87.79 BOTH SEXES;V;Near vision;With some difficulty;8.85 BOTH SEXES;V;Near vision;With severe difficulty;1.81 BOTH SEXES;V;Near vision;Unable to do so;1.55 BOTH SEXES;V;Far vision;Total;100.00 BOTH SEXES;V;Far vision;Without difficulty;91.11 BOTH SEXES;V;Far vision;With some difficulty;5.57 BOTH SEXES;V;Far vision;With severe difficulty;1.41 BOTH SEXES;V;Far vision;Unable to do so;1.90 BOTH SEXES;VI;Near vision;Total;100.00 BOTH SEXES;VI;Near vision;Without difficulty;85.61 BOTH SEXES;VI;Near vision;With some difficulty;10.94 BOTH SEXES;VI;Near vision;With severe difficulty;2.32 BOTH SEXES;VI;Near vision;Unable to do so;1.14 BOTH SEXES;VI;Far vision;Total;100.00 BOTH SEXES;VI;Far vision;Without difficulty;89.12 BOTH SEXES;VI;Far vision;With some difficulty;7.34 BOTH SEXES;VI;Far vision;With severe difficulty;1.48 BOTH SEXES;VI;Far vision;Unable to do so;2.05 BOTH SEXES;No data recorded;Near vision;Total;100.00 BOTH SEXES;No data recorded;Near vision;Without difficulty;83.92 BOTH SEXES;No data recorded;Near vision;With some difficulty;11.63 BOTH SEXES;No data recorded;Near vision;With severe difficulty;3.63 BOTH SEXES;No data recorded;Near vision;Unable to do so;0.82 BOTH SEXES;No data recorded;Far vision;Total;100.00 BOTH SEXES;No data recorded;Far vision;Without difficulty;88.58 BOTH SEXES;No data recorded;Far vision;With some difficulty;7.68 BOTH SEXES;No data recorded;Far vision;With severe difficulty;2.45 BOTH SEXES;No data recorded;Far vision;Unable to do so;1.28 MALES;Total;Near vision;Total;100.00 MALES;Total;Near vision;Without difficulty;90.81 MALES;Total;Near vision;With some difficulty;6.65 MALES;Total;Near vision;With severe difficulty;1.34 MALES;Total;Near vision;Unable to do so;1.20 MALES;Total;Far vision;Total;100.00 MALES;Total;Far vision;Without difficulty;93.51 MALES;Total;Far vision;With some difficulty;3.52 MALES;Total;Far vision;With severe difficulty;0.85 MALES;Total;Far vision;Unable to do so;2.13 MALES;I;Near vision;Total;100.00 MALES;I;Near vision;Without difficulty;94.18 MALES;I;Near vision;With some difficulty;3.60 MALES;I;Near vision;With severe difficulty;0.24 MALES;I;Near vision;Unable to do so;1.99 MALES;I;Far vision;Total;100.00 MALES;I;Far vision;Without difficulty;94.72 MALES;I;Far vision;With some difficulty;1.29 MALES;I;Far vision;With severe difficulty;0.21 MALES;I;Far vision;Unable to do so;3.78 MALES;II;Near vision;Total;100.00 MALES;II;Near vision;Without difficulty;93.68 MALES;II;Near vision;With some difficulty;4.51 MALES;II;Near vision;With severe difficulty;0.30 MALES;II;Near vision;Unable to do so;1.51 MALES;II;Far vision;Total;100.00 MALES;II;Far vision;Without difficulty;95.15 MALES;II;Far vision;With some difficulty;2.13 MALES;II;Far vision;With severe difficulty;0.37 MALES;II;Far vision;Unable to do so;2.35 MALES;III;Near vision;Total;100.00 MALES;III;Near vision;Without difficulty;92.86 MALES;III;Near vision;With some difficulty;4.84 MALES;III;Near vision;With severe difficulty;0.79 MALES;III;Near vision;Unable to do so;1.52 MALES;III;Far vision;Total;100.00 MALES;III;Far vision;Without difficulty;94.25 MALES;III;Far vision;With some difficulty;2.87 MALES;III;Far vision;With severe difficulty;0.56 MALES;III;Far vision;Unable to do so;2.33 MALES;IV;Near vision;Total;100.00 MALES;IV;Near vision;Without difficulty;92.19 MALES;IV;Near vision;With some difficulty;5.96 MALES;IV;Near vision;With severe difficulty;1.26 MALES;IV;Near vision;Unable to do so;0.59 MALES;IV;Far vision;Total;100.00 MALES;IV;Far vision;Without difficulty;93.92 MALES;IV;Far vision;With some difficulty;3.35 MALES;IV;Far vision;With severe difficulty;0.73 MALES;IV;Far vision;Unable to do so;2.00 MALES;V;Near vision;Total;100.00 MALES;V;Near vision;Without difficulty;88.83 MALES;V;Near vision;With some difficulty;8.31 MALES;V;Near vision;With severe difficulty;1.65 MALES;V;Near vision;Unable to do so;1.20 MALES;V;Far vision;Total;100.00 MALES;V;Far vision;Without difficulty;93.27 MALES;V;Far vision;With some difficulty;3.98 MALES;V;Far vision;With severe difficulty;1.06 MALES;V;Far vision;Unable to do so;1.69 MALES;VI;Near vision;Total;100.00 MALES;VI;Near vision;Without difficulty;87.53 MALES;VI;Near vision;With some difficulty;9.37 MALES;VI;Near vision;With severe difficulty;2.27 MALES;VI;Near vision;Unable to do so;0.83 MALES;VI;Far vision;Total;100.00 MALES;VI;Far vision;Without difficulty;90.63 MALES;VI;Far vision;With some difficulty;6.31 MALES;VI;Far vision;With severe difficulty;1.41 MALES;VI;Far vision;Unable to do so;1.65 MALES;No data recorded;Near vision;Total;100.00 MALES;No data recorded;Near vision;Without difficulty;85.95 MALES;No data recorded;Near vision;With some difficulty;7.91 MALES;No data recorded;Near vision;With severe difficulty;6.14 MALES;No data recorded;Near vision;Unable to do so;0.00 MALES;No data recorded;Far vision;Total;100.00 MALES;No data recorded;Far vision;Without difficulty;94.04 MALES;No data recorded;Far vision;With some difficulty;1.94 MALES;No data recorded;Far vision;With severe difficulty;2.68 MALES;No data recorded;Far vision;Unable to do so;1.35 FEMALES;Total;Near vision;Total;100.00 FEMALES;Total;Near vision;Without difficulty;88.16 FEMALES;Total;Near vision;With some difficulty;8.48 FEMALES;Total;Near vision;With severe difficulty;1.59 FEMALES;Total;Near vision;Unable to do so;1.78 FEMALES;Total;Far vision;Total;100.00 FEMALES;Total;Far vision;Without difficulty;90.12 FEMALES;Total;Far vision;With some difficulty;6.09 FEMALES;Total;Far vision;With severe difficulty;1.36 FEMALES;Total;Far vision;Unable to do so;2.43 FEMALES;I;Near vision;Total;100.00 FEMALES;I;Near vision;Without difficulty;92.59 FEMALES;I;Near vision;With some difficulty;4.66 FEMALES;I;Near vision;With severe difficulty;0.67 FEMALES;I;Near vision;Unable to do so;2.08 FEMALES;I;Far vision;Total;100.00 FEMALES;I;Far vision;Without difficulty;93.49 FEMALES;I;Far vision;With some difficulty;3.26 FEMALES;I;Far vision;With severe difficulty;0.77 FEMALES;I;Far vision;Unable to do so;2.49 FEMALES;II;Near vision;Total;100.00 FEMALES;II;Near vision;Without difficulty;91.68 FEMALES;II;Near vision;With some difficulty;6.43 FEMALES;II;Near vision;With severe difficulty;0.88 FEMALES;II;Near vision;Unable to do so;1.02 FEMALES;II;Far vision;Total;100.00 FEMALES;II;Far vision;Without difficulty;92.00 FEMALES;II;Far vision;With some difficulty;4.46 FEMALES;II;Far vision;With severe difficulty;0.92 FEMALES;II;Far vision;Unable to do so;2.61 FEMALES;III;Near vision;Total;100.00 FEMALES;III;Near vision;Without difficulty;90.82 FEMALES;III;Near vision;With some difficulty;5.75 FEMALES;III;Near vision;With severe difficulty;1.20 FEMALES;III;Near vision;Unable to do so;2.24 FEMALES;III;Far vision;Total;100.00 FEMALES;III;Far vision;Without difficulty;91.67 FEMALES;III;Far vision;With some difficulty;3.74 FEMALES;III;Far vision;With severe difficulty;0.99 FEMALES;III;Far vision;Unable to do so;3.60 FEMALES;IV;Near vision;Total;100.00 FEMALES;IV;Near vision;Without difficulty;88.83 FEMALES;IV;Near vision;With some difficulty;8.35 FEMALES;IV;Near vision;With severe difficulty;1.09 FEMALES;IV;Near vision;Unable to do so;1.73 FEMALES;IV;Far vision;Total;100.00 FEMALES;IV;Far vision;Without difficulty;90.90 FEMALES;IV;Far vision;With some difficulty;6.17 FEMALES;IV;Far vision;With severe difficulty;1.13 FEMALES;IV;Far vision;Unable to do so;1.80 FEMALES;V;Near vision;Total;100.00 FEMALES;V;Near vision;Without difficulty;86.73 FEMALES;V;Near vision;With some difficulty;9.39 FEMALES;V;Near vision;With severe difficulty;1.97 FEMALES;V;Near vision;Unable to do so;1.90 FEMALES;V;Far vision;Total;100.00 FEMALES;V;Far vision;Without difficulty;88.91 FEMALES;V;Far vision;With some difficulty;7.21 FEMALES;V;Far vision;With severe difficulty;1.77 FEMALES;V;Far vision;Unable to do so;2.12 FEMALES;VI;Near vision;Total;100.00 FEMALES;VI;Near vision;Without difficulty;84.13 FEMALES;VI;Near vision;With some difficulty;12.14 FEMALES;VI;Near vision;With severe difficulty;2.35 FEMALES;VI;Near vision;Unable to do so;1.37 FEMALES;VI;Far vision;Total;100.00 FEMALES;VI;Far vision;Without difficulty;87.96 FEMALES;VI;Far vision;With some difficulty;8.13 FEMALES;VI;Far vision;With severe difficulty;1.55 FEMALES;VI;Far vision;Unable to do so;2.36 FEMALES;No data recorded;Near vision;Total;100.00 FEMALES;No data recorded;Near vision;Without difficulty;83.08 FEMALES;No data recorded;Near vision;With some difficulty;13.19 FEMALES;No data recorded;Near vision;With severe difficulty;2.58 FEMALES;No data recorded;Near vision;Unable to do so;1.16 FEMALES;No data recorded;Far vision;Total;100.00 FEMALES;No data recorded;Far vision;Without difficulty;86.30 FEMALES;No data recorded;Far vision;With some difficulty;10.08 FEMALES;No data recorded;Far vision;With severe difficulty;2.36 FEMALES;No data recorded;Far vision;Unable to do so;1.26