| in rare cases | 5 | temporal |
| shingle → cause → blindness | 6 |
| shingle → lead to → blindness | 6 |
| shingle → lead to → permanent blindness | 4 |
| negative | neutral | positive |
| 0.907 | 0.089 | 0.005 |
| Raw frequency | 16 |
| Normalized frequency | 0.363 |
| Modifier score | 0.400 |
| Perplexity | 87.759 |