General characteristics of 1786 patients with infectious keratitis
| Characteristic | Patients | |
| n | % | |
| Age group (years) | ||
| 11–20 | 153 | 8.6 |
| 21–30 | 322 | 18 |
| 31–40 | 365 | 20.4 |
| 41–50 | 268 | 15 |
| 51–60 | 254 | 14.2 |
| 61–70 | 192 | 10.8 |
| 71–80 | 143 | 8 |
| 81–90 | 73 | 4.1 |
| 91–97 | 16 | 0.9 |
| Sex | ||
| Female | 974 | 54.5 |
| Male | 812 | 45.5 |
| Annual distribution | ||
| 1997 | 208 | 11.6 |
| 1998 | 257 | 14.4 |
| 1999 | 264 | 14.8 |
| 2000 | 236 | 13.2 |
| 2001 | 268 | 15 |
| 2002 | 272 | 15.2 |
| 2003 | 281 | 15.7 |
| Seasonal variation | ||
| January | 167 | 9.3 |
| February | 122 | 6.8 |
| March | 128 | 7.2 |
| April | 128 | 7.2 |
| May | 157 | 8.8 |
| June | 166 | 9.3 |
| July | 176 | 9.9 |
| August | 170 | 9.5 |
| September | 148 | 8.3 |
| October | 141 | 7.9 |
| November | 129 | 7.2 |
| December | 154 | 8.6 |