| ONSM | Optic nerve sheath meningiomas |
| STR | Stereotactic radiotherapy |
| IMRT | Intensity-modulated radiation therapy |
| CK | CyberKnife |
| VA | Visual acuity |
| VF | Visual field |
| BCVA | Best-corrected visual acuity |
| CF | Counting fingers |
| HM | Hand motion |
| LP | Light perception |
| NLP | No light perception |
| Hypo-RS | Hypofractionated radiosurgery |
| FSRT | Fractionated stereotactic radiotherapy |
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