| at night | 6 | temporal |
| during the first month after treatment | 4 | temporal |
| around bright lights | 3 | location |
| patient → see → halo | 7 |
| patient → notice → halo | 6 |
| negative | neutral | positive |
| 0.264 | 0.691 | 0.045 |
| Raw frequency | 13 |
| Normalized frequency | 0.271 |
| Modifier score | 0.540 |
| Perplexity | 168.674 |