Table 5.
Comparison of anatomical and aetiological causes of SVI/BL in different studies
| Present study | India5 | Sri Lanka12 | China14 | West Africa13 | Czech Rep16 | |
| No (%) | No (%) | No (%) | No (%) | No (%) | No (%) | |
| Author (year) | Titiyal et al 2001 | Rahi et al 1993 | Eckstein et al 1995 | Hornby et al 1999 | Gilbert et al 1993 | Blohme et al 2001 |
| Anatomical | ||||||
| Whole globe | 178 (27.4) | 334 (25.3) | 81 (35.8) | 288 (25.5) | 24 (8.5) | 25 (10.9) |
| Cornea | 141 (21.7) | 348 (26.4) | 5 (2.2) | 49 (4.4) | 102 (35.9) | 4 (1.8) |
| Lens | 71 (10.9) | 162 (12.3) | 39 (17.3) | 213 (18.8) | 44 (15.5) | 20 (8.7) |
| Retina | 98 (15.1) | 273 (20.7) | 50 (22.1) | 282 (24.9) | 58 (20.4) | 124 (54.2) |
| Aetiology | ||||||
| Hereditary | 87 (13.4) | 303 (22.9) | 79 (35) | 347 (30.7) | 60 (21.1) | 21 (9.2) |
| Childhood | 182 (28.0) | 367 (27.9) | 12 (5.3) | 158 (14) | 96 (33.8) | 10 (4.4) |
| Undetermined | 367 (56.5) | 607 (46) | 127 (56.2) | 599 (52.9) | 99 (34.9) | 97 (44.3) |
| Total | 650 (100) | 1318 (100) | 226 (100) | 1131 (100) | 284 (100) | 229 (100) |