Table 1. Main characteristics of the retained studies (n = 47).
| Characteristics of study | Number of studies (%) |
|---|---|
| Year published | |
| 1990–1999 | 2 (4.3) |
| 2000–2004 | 2 (4.3) |
| 2005–2009 | 14 (29.8) |
| 2010–2014 | 21 (44.7) |
| 2015–2016 | 8 (17.0) |
| Setting | |
| Urban | 1 (2.1) |
| Rural | 31 (66.0) |
| Both | 3 (6.4) |
| Mixed | 12 (25.5) |
| Gender | |
| Both | 40 (85.1) |
| Mixed | 7 (14.9) |
| Sample size | |
| 301–2000 | 6 (12.8) |
| 2001–5000 | 20 (42.6) |
| 5001–10000 | 13 (27.7) |
| 10001–20000 | 4 (8.5) |
| 20001–102000 | 4 (8.5) |
| Assessment tool | |
| Cornea examination or photography | 3 (6.4) |
| External ocular and fundus photography | 4 (8.5) |
| Flashlight | 1 (2.1) |
| Flashlight and slit lamp examination | 10 (21.3) |
| Slit lamp examination | 28 (59.6) |
| General eye examination | 1 (2.1) |