| for further diagnosis | 7 | purpose |
| from an optometrist | 5 | other |
| not only locally | 4 | other |
| patient → be → referred | 41 |
| patient → be referred to → doctor | 7 |
| patient → refer → physician | 3 |
| negative | neutral | positive |
| 0.221 | 0.705 | 0.073 |
| Raw frequency | 51 |
| Normalized frequency | 0.524 |
| Modifier score | 0.650 |
| Perplexity | 72.580 |