Refractive  Errors

cases ( n = 151 )

Prevalence (%)       ( N =1536 )

95 %  CI

n

%

Myopia

87

57.6

5.7

4.5-6.9

Mild ( - 0.5 D < - 3 D )

69

45.7

4.5

3.5-5.5

Moderate ( - 3 D < - 6 D )

13

8.6

.85

0.35-1.35

High ( > -  6 D )

5

3.3

.33

0.03-0.63

Hyperopia

23

15.2

1.5

0.9-2.1

Mild ( + 0.5 D < 3 D )

15

9.9

.98

0.48-1.48

Mod. ( +3 D <+ 6 D )

7

4.6

.46

0.16-0.76

High ( > + 6 D )

1

.7

.07

-0.03-0.17

EmEmmetropia

41

27.2

2.7

1.9-3.5

• Astigmatism

100

66.2

6.5

5.3-7.7