Estimated sympathetic ophthalmia (SO) risk after retinal surgery
| Retinal surgical procedure as cause of SO | New SO cases with previous retinal surgery | No of retinal surgical procedures performed | Estimated SO risk |
| 1 PPV | 3 | ||
| >1 PPV | 2 | ||
| Total | 5 | 3994 | 1 in 799 |
| 1 ext RD repair | 2 | ||
| >1 ext RD repair | 1 | ||
| Total | 3 | 4070 | 1 in 1357 |
| Total PPV or ext RD repair | 7 | 8064 | 1 in 1152 |
PPV= pars plana vitrectomy; ext RD repair = external rhegmatogenous retinal detachment repair.
↵Data on retinal surgical risks for SO obtained with permission from Kilmartin et al.3
↵Data obtained from grossed hospital episode statistics from the Department of Health, London; Office for Population Census and Surveys 4 codes C54 (excluding retinal photocoagulation) and C79 (excluding anterior vitrectomy).