Table 2.
A comparison of postoperative visual acuity improvements relative to baseline for eyes undergoing Boston keratoprosthesis with combined pars plana vitrectomy to eyes without pars plana vitrectomy during follow up*
| KPRO without PPVx (N=70) | KPRO with PPVx (N=55) | P-value | |||
|---|---|---|---|---|---|
| Snellen(logMAR) Mean VA | N | Snellen(logMAR) Mean VA | N | ||
| Baseline | 20/5902 (2.47) | 69 | 12/13837 (2.84) | 53 | 0.027 |
| Follow Up (months) | Snellen Lines (logMAR lines) of Improvement | N | Snellen Lines (logMAR lines) of Improvement | N | |
| 1 | 13.7 (1.37) | 68 | 12.2 (1.22) | 54 | 0.059 |
| 3 | 13.6 (1.36) | 60 | 12.9 (1.29) | 47 | 0.158 |
| 6 | 12.0 (1.20) | 57 | 12.1 (1.21) | 47 | 0.447 |
| 9 | 10.9 (1.09) | 54 | 12.1 (1.21) | 37 | 0.878 |
| 12 | 11.7 (1.17) | 55 | 11.5 (1.15) | 36 | 0.512 |
| Last Follow up Duration(months) | 54.67 +/− 4.31 | 48.41 +/− 3.97 | 0.297 | ||
| Acuity Improvement Last Follow Up | Snellen Lines (logMAR lines) of Improvement | N | Snellen Lines (logMAR lines) of Improvement | N | P-value |
| 5.8 (0.58) | 62 | 12.1 (1.21) | 48 | 0.138 | |
*
NLP visual acuities excluded from logMAR calculations