| for treatment | 9 | purpose |
| for vision in terrestrial conditions | 9 | cause |
| for lenses | 6 | other |
| eye → be → suitable | 52 |
| eye → be → desirable | 9 |
| eye → be → preferred | 3 |
| eye → be → convenient | 3 |
| eye → be → desired | 3 |
| negative | neutral | positive |
| 0.088 | 0.567 | 0.345 |
| Raw frequency | 70 |
| Normalized frequency | 0.488 |
| Modifier score | 1.000 |
| Perplexity | 275.550 |