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Table 3 Summary of completeness of data for participants undergoing full examination (N = 6397)

From: A Population-based survey of the prevalence and types of glaucoma in Nigeria: results from the Nigeria National Blindness and Visual Impairment Survey

 

Eye level data

Person level data

 

Right eye

Left eye

All eyes

One/both eyes

Both eyes

 

N

%

N

%

N

%

N

%

N

%

Total

6397

 

6397

 

12,794

 

6397

 

6397

 

Examination

 Van Herick’s

5830

91.1

5821

91.0

11,651

91.1

5967

93.3

5684

88.9

 Intra-ocular pressure

5496

85.9

5478

85.6

10,974

85.8

5638

88.1

5336

83.4

 Disc grading

  Photo

4203

65.7

4242

66.3

8445

66.0

4631

72.4

3814

59.6

  Clinical

1320

20.6

1304

20.4

2624

20.5

1329

20.8

993

15.5

  None

874

13.7

851

13.3

1725

13.5

–

–

437

6.8