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| Time since primary CTT | 1st repeat surgery (n) | 2nd repeat surgery (n) | 3rd repeat surgery (n) | 4th repeat surgery (n) | 5th repeat surgery (n) | 6th repeat surgery (n) |
|---|---|---|---|---|---|---|
| Less than 1y | 5 | 1 | 0 | 0 | 0 | 0 |
| 1–5y | 10 | 5 | 0 | 0 | 0 | 0 |
| 5–10y | 9 | 4 | 1 | 0 | 0 | 0 |
| 10–20y | 12 | 5 | 4 | 1 | 0 | 0 |
| 20–30y | 5 | 1 | 1 | 1 | 2 | 1 |
| 30–40y | 0 | 0 | 0 | 0 | 0 | 0 |
Abbreviations: CTT, combined trabeculotomy–trabeculectomy; n, number of eyes; y, year.
