Table 2.
Keratometric change before and after INTACS implantation.
| Parameter | Preoperative | Postoperative | P value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2 m | 1 yr | 3 yr | 5 yr | Pre to 2 m | Pre to 1 yr | Pre to 3 yr | Pre to five yr | ||
| Anterior SimK | 50.667 ±2.581 |
47.921 ±2.497 |
47.858 ±2.657 |
47.600 ±2.183 |
47.733 ±2.434 |
0.001* | 0.000* | 0.001* | 0.000* |
| Anterior 3 mm K | 50.614 ±3.203 |
48.728 ±4.410 |
48.307 ±2.948 |
48.629 ±2.792 |
48.500 ±2.715 |
0.001* | 0.000* | 0.005* | 0.001* |
| Posterior SimK | −8.047 ±1.176 |
−8.297 ±1.095 |
−8.242 ±1.045 |
−8.075 ±0.952 |
−8.100 ±1.104 |
0.007* | 0.139 | 1.000 | 1.000 |
Anterior SimK = Mean anterior simulated keratometry; Anterior 3 mm K = Mean anterior keratometry in 3.0 mm zone; Posterior SimK = Mean posterior simulated keratometry. * indicates statistical significance.