| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| refractive index of vitreous humour | 1.94 | 0.4 | 964 | 24 | 35 |
| refractive | 1.28 | 0.2 | 6966 | 64 | 10 |
| index | 0.13 | 0.1 | 311 | 25 | 5 |
| of | 1.02 | 0.5 | 3166 | 8 | 2 |
| vitreous | 1.63 | 0.5 | 3869 | 33 | 8 |
| humour | 0.98 | 0.7 | 9875 | 59 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| refractive index of vitreous humour | 1.99 | 0.8 | 9629 | 90 |
