Tuoketuo

Shangdu

Blindness

SVI

MVI

Blindness

SVI

MVI

n = 24

n = 20

n = 87

n = 30

n = 40

n = 91

Refractive error

0

0.0%

5

25.0%

44

50.6%

2

6.7%

7

17.5%

42

46.2%

Aphakia, uncorrected

0

0.0%

0

0.0%

0

0.0%

0

0.0%

0

0.0%

1

1.1%

Cataract, untreated

15

62.5%

10

50.0%

28

32.2%

14

46.7%

13

32.5%

23

25.3%

Total treatable

15

62.5%

15

75.0%

72

82.8%

16

53.3%

20

50.0%

66

72.5%

Other corneal opacity

1

4.2%

0

0.0%

1

1.1%

6

20.0%

3

7.5%

2

2.2%

Myopic retinopathy

3

12.5%

2

10.0%

4

4.6%

0

0.0%

10

25.0%

8

8.8%

Total preventable

4

16.7%

2

10.0%

5

5.7%

6

20.0%

13

32.5%

10

11.0%

Cataract surgical complications

2

8.3%

1

5.0%

2

2.3%

0

0.0%

1

2.5%

1

1.1%

Glaucoma

2

8.3%

0

0.0%

1

1.1%

1

3.3%

1

2.5%

0

0.0%

Diabetic retinopathy

0

0.0%

0

0.0%

0

0.0%

0

0.0%

0

0.0%

2

2.2%

Total avoidable

23

95.8%

18

90.0%

80

92.0%

23

76.7%

35

87.5%

78

85.7%

ARMD

0

0.0%

0

0.0%

3

3.4%

0

0.0%

1

2.5%

6

6.6%

Other posterior segment

1

4.2%

1

5.0%

3

3.4%

5

16.7%

4

10.0%

7

7.7%

Globe abnormality/CNS

0

0.0%

1

5.0%

1

1.1%

2

6.7%

0

0.0%

0

0.0%