| Similarity | Rank | |
|---|---|---|
| LASIK | 0.796 | 26039 |
| intraocular | 0.773 | 62682 |
| Lasik | 0.762 | 58030 |
| PRK | 0.752 | 73639 |
| refractive | 0.744 | 36563 |
| astigmatism | 0.739 | 48250 |
| cataract | 0.724 | 25742 |
| multifocal | 0.723 | 92745 |
| presbyopia | 0.704 | 87135 |
| corneal | 0.696 | 34214 |
| nearsightedness | 0.693 | 83480 |
| Invisalign | 0.689 | 40022 |
| orthodontic | 0.687 | 36793 |
| Endoscopic | 0.684 | 94184 |
| Orthodontic | 0.681 | 96435 |
| implant | 0.676 | 10190 |
| cornea | 0.675 | 27262 |
| lenses | 0.674 | 6995 |
| orthodontics | 0.672 | 57589 |
| lens | 0.671 | 4608 |
| prosthesis | 0.670 | 38838 |
| Implant | 0.669 | 39887 |
| endoscopic | 0.668 | 45357 |
| farsightedness | 0.667 | 93803 |
| Cataract | 0.666 | 60348 |