Research Article
Repeat Keratoplasty for Failed Therapeutic Keratoplasty for Microbial Keratitis: An Analysis of Characteristics and Risk Factors
Table 1
Characteristics of initial and repeat keratoplasty.
| | | Initial keratoplasty | Repeat keratoplasty | Repeat/initial keratoplasty (%) | | Number | Relative contribution (%) | Number | Relative contribution (%) |
| | Total | 447 | | 18 | | 4.0 |
| | Initial causative organism | | | | | | | Bacteria | 34 | 7.6 | 2 | 11.1 | 5.9 | | Fungi | 214 | 47.9 | 6 | 33.3 | 2.8 | | Virus | 10 | 2.2 | 0 | 0 | 0 | | Acanthamoeba | 12 | 2.7 | 1 | 5.6 | 8.3 | | Mixed | 17 | 3.8 | 1 | 5.6 | 5.9 | | Cultural-negative | 160 | 35.8 | 8 | 44.4 | 5.0 |
| | Initial perforation | | | | | | | Absent | 285 | 63.8 | 14 | 77.8 | 4.9 | | Present | 162 | 36.2 | 4 | 22.2 | 2.5 |
| | Initial surgical procedure | | | | | | | PK | 337 | 75.4 | 12 | 66.7 | 3.6 | | LK | 110 | 24.6 | 6 | 33.3 | 5.5 |
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PK, penetrating keratoplasty; LK, lamellar keratoplasty.
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