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Table 3 Causes of visual impairment

From: Baseline traits of patients presenting at a low vision clinic in Shanghai, China

Primary diagnoses

Age (years)

Total no.(%)

0-9

10-19

20-29

30-39

40-49

50-59

60-69

70-79

80+

Congenital cataract

26

8

6

1

2

0

0

0

0

43(14.38)

Degenerative myopia

5

7

4

2

1

6

7

8

1

41(13.71)

JMD

7

9

9

3

0

0

0

0

0

28(9.36)

Retinitis pigmentosa

1

6

7

3

4

6

0

1

0

28(9.36)

Optic atrophy

7

10

2

3

1

3

1

0

0

27(9.03)

Nystagmus

9

9

3

1

1

0

0

0

0

23(7.69)

Glaucoma

7

4

3

1

0

2

1

3

2

23(7.69)

AMD

0

0

0

0

0

2

3

7

9

21(7.02)

Albinism

8

4

3

0

1

0

0

0

0

16(5.35)

Coloboma

5

2

1

0

0

0

0

0

0

8(2.68)

Diabetic retinopathy

0

0

0

0

1

2

4

0

0

7(2.34)

Trauma

0

1

1

0

2

1

1

0

0

6(2.01)

Retinal detachment

0

1

1

2

0

0

0

1

0

5(1.67)

Corneal opacity

1

1

0

0

0

1

0

1

0

4(1.34)

Cone/Rod dystrophy

1

1

0

0

1

1

0

0

0

4(1.34)

Age-related cataract

0

0

0

0

0

0

0

0

2

2(0.67)

Congenital microphthalmia

2

0

0

0

0

0

0

0

0

2(0.67)

Retinopathy of prematurity

0

1

1

0

0

0

0

0

0

2(0.67)

Optic nerve hypoplasia

2

0

0

0

0

0

0

0

0

2(0.67)

Others*

4

1

0

0

0

2

0

0

0

7(2.34)

Total

85

65

41

16

14

26

17

21

14

299(100.00)

  1. Abbreviation: AMD age-related macular degeneration, JMD juvenile macular degeneration.
  2. *Others: Persistent hyperplastic primary vitreous-1, Familial exudative vitreoretinopathy-1, Morning-glory syndrome-1, Spherophakia-1, Retinoblastoma-1, Hypertensive retinopathy-1, Macular hole-1.