Baseline characteristics
| Eyes | |
| n (Male/female) | 31 (16/15) |
| Mean age, years (SD), (range) | 53 years (±10 years), (23 years–78 years) |
| Mean follow-up, months (SD), (range) | 15.7 m (±10.3 m), (3 m–35 m) |
| Tumour management | |
| Mean volume of tumour | 829 mm3 |
| Dose of irradiation | 60Gy (four fractions) |
| Mean time between PBRT and shunt implantation | 2.5 years (4 days–12.6 years) |
| Preoperative measures | |
| Mean IOP, mm Hg (±SD) (range) | 31.0 (±10.3) mm Hg (10–50 mm Hg) |
| Mean number of GMs per patient, (±SD) (range) | 3.3 (±1.3) (0–5) |
| Mean visual acuity (±SD) (range) | 0.3 (±0.3) (0.0–1.0) |
| Postoperative measures (last visit) | |
| Mean IOP, mm Hg (±SD) (range) | 15.0 (±5.0) mm Hg (5–29 mm Hg) |
| Mean number of GMs per patient, (±SD) (range) | 0.7 (±1.3) (0–5) |
| Mean visual acuity (±SD) (range) | 0.3 (±0.2) (0.0–0.6) |