| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| optical defocus | 0.76 | 0.9 | 7086 | 74 | 15 |
| optical | 1.84 | 0.1 | 5151 | 56 | 7 |
| defocus | 0.97 | 0.7 | 1009 | 91 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| optical defocus | 0.18 | 0.9 | 200 | 54 |
| optical defocus pattern electroretinography | 0.8 | 1 | 5869 | 20 |
| human optical axial length and defocus | 0.24 | 0.9 | 4017 | 38 |
| properties of a defocused optical system | 1.28 | 0.1 | 2804 | 55 |
