| extremely | 4 | degree |
| in shape | 4 | other |
| with astigmatism | 3 | other |
| cornea → be → distorted | 23 |
| cornea → become → distorted | 18 |
| cornea → become → more distorted | 12 |
| cornea → be → warped | 9 |
| cornea → become → warped | 5 |
| negative | neutral | positive |
| 0.636 | 0.332 | 0.033 |
| Raw frequency | 67 |
| Normalized frequency | 0.729 |
| Modifier score | 0.533 |
| Perplexity | 261.065 |