| BCVA | Best-Corrected Visual Acuity |
| CXL | Corneal Cross-Linking |
| DALK | Deep Anterior Lamellar Keratoplasty |
| KC | Keratoconus |
| Kmean | Mean Keratometry |
| OCT | Optical Coherence Tomography |
| PKP | Penetrating Keratoplasty |
| PROMs | Patient-Reported Outcome Measures |
| QoL | Quality of Life |
| RGP | Rigid Gas Permeable (contact lenses) |
| VFQ-25 | Visual Function Questionnaire—25 Items |
| NEI | National Eye Institute |
| SD | Standard Deviation |
| IQR | Interquartile Range |
| SS-OCT | Swept-Source Optical Coherence Tomography |
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