Table 3 Prevalence of uncorrected visual acuity (UCVA) with lines of visual acuity improvement in the better-seeing eye with best correction.

From: Vision Status in Older Adults: The Brazilian Amazon Region Eye Survey

UCVA

Lines of Improvement with BCVA

Total

0

1

2

3

4

5

≥6

n (%)

n (%)

n (%)

n (%)

n (%)

n (%)

n (%)

n (%)

20/20

406 (66.0)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

406 (20.0)

20/25

48 (7.8)

288 (62.2)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

336 (16.6)

20/32

22 (3.6)

64 (13.8)

182 (56.7)

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

268 (13.2)

20/40

20 (3.2)

34 (7.3)

53 (16.5)

123 (54.9)

0 (0.0)

0 (0.0)

0 (0.0)

230 (11.4)

20/50

19 (3.1)

24 (5.2)

29 (9.0)

41 (18.3)

76 (53.5)

0 (0.0)

0 (0.0)

189 (9.3)

20/63

10 (1.6)

19 (4.1)

15 (4.7)

23 (10.3)

27 (19.0)

64 (60.4)

0 (0.0)

158 (7.8)

20/80

13 (2.1)

12 (2.6)

19 (5.9)

12 (5.4)

13 (9.1)

10 (9.4)

42 (27.3)

121 (6.0)

20/100

6 (1.0)

9 (1.9)

9 (2.8)

6 (2.7)

11 (7.7)

12 (11.3)

36 (23.4)

89 (4.4)

20/125

3 (0.5)

9 (1.9)

5 (1.6)

11 (4.9)

6 (4.2)

7 (6.6)

31 (20.1)

72 (3.6)

20/160

4 (0.6)

1 (0.2)

3 (0.9)

1 (0.4)

5 (3.5)

2 (1.9)

15 (9.7)

31 (1.5)

20/200

1 (0.2)

2 (0.4)

2 (0.6)

4 (1.8)

2 (1.4)

8 (7.5)

16 (10.4)

35 (1.7)

20/250

0 (0.0)

0 (0.0)

2 (0.6)

1 (0.4)

1 (0.7)

1 (0.9)

4 (2.6)

9 (0.4)

20/320

2 (0.3)

0 (0.0)

2 (0.6)

0 (0.0)

0 (0.0)

0 (0.0)

5 (3.2)

9 (0.4)

20/400

7 (1.1)

1 (0.2)

0 (0.0)

1 (0.4)

1 (0.7)

1 (0.9)

3 (1.9)

14 (0.7)

<20/400

54 (8.8)

0 (0.0)

0 (0.0)

1 (0.4)

0 (0.0)

1 (0.9)

2 (1.3)

58 (2.9)

ALL

615 (30.4)

463 (22.9)

321 (15.9)

224 (11.0)

142 (7.0)

106 (5.2)

154 (7.6)

2025 (100.0)

  1. UCVA – uncorrected visual acuity; BCVA – best-corrected visual acuity.