Cohort summary
| Male | Female | Total | |
|---|---|---|---|
| Whole group | |||
| Left sided | 19 | 13 | 32 |
| Right sided | 15 | 14 | 29 |
| Bilateral | 33 | 28 | 61 |
| Optic fissure closure defect | |||
| Left sided | 11 | 7 | 18 |
| Right sided | 11 | 10 | 21 |
| Bilateral | 23 | 23 | 46 |
| Non-optic fissure closure defect | |||
| Left sided | 4 | 1 | 5 |
| Right sided | 1 | 1 | 2 |
| Bilateral | 4 | 1 | 5 |
| Unclassifiable | |||
| Left sided | 4 | 5 | 9 |
| Right sided | 4 | 3 | 7 |
| Bilateral | 5 | 4 | 9 |