Table 4.
Changes in the prevalence of ocular onchocerciasis in the sentinel communities
| Sentinel community | Presence of punctate keratitis (PK, %) | Presence of microfilariae in the anterior chamber (MfAC, %) | ||||
| 1989 | 2000 | 2004 | 1989 | 2000 | 2004 | |
| Corriente Grande | 41.7 | 1.2 | 0 | 50.5 | 0 | 0 |
| El Tigre | 36.6 | 1.6 | 0 | 27.3 | 0 | 0 |
| San Miguel | 50.0 | 4.7 | 0 | 50.0 | 0 | 0 |
| Playa del Oro | 48.8 | 5.1 | 0 | 6.0 | 0 | 0 |
| Guayabal | 14.3 | 1.5 | 0 | 0 | 0 | 0 |
| Angostura | 21.4 | 0 | 0 | 14.3 | 0 | 0 |
| Naranjal | 0 | 0.9 | 0 | 0 | 0 | 0 |
The prevalence of ocular onchocerciasis of the anterior segment is provided by punctate keratitis (PK) and presence of microfilariae in the anterior chamber (MfAC).