Clinical data on 57 iris cysts in children
| Number | % Children with cysts | Age (years) | Sex | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Range | Male | Female | ||||||||
| I Primary iris cysts (53) | |||||||||||
| A Primary cysts of iris pigment epithelium (44) | |||||||||||
| 1 Peripheral (iridociliary) | 34 | 59 | 15 | 5–19 | 11 | 23 | |||||
| 2 Mid-zonal | 5 | 9 | 9 | 1–19 | 5 | 1 | |||||
| 3 Central (pupillary) | 3 | 5 | 13 | 1–19 | 3 | 0 | |||||
| 4 Dislodged | |||||||||||
| a Fixed | 0 | 0 | — | — | — | — | |||||
| b Free floating | 2 | 4 | 16 | 12–19 | 1 | 1 | |||||
| B Primary stromal iris cysts (9) | |||||||||||
| 1 Congenital | 9 | 16 | 2 | 0–7 | 4 | 6 | |||||
| 2 Acquired | 0 | 0 | — | — | — | — | |||||
| II Secondary iris cysts (4) | |||||||||||
| A Traumatic | 2 | 4 | 8 | 2–13 | 0 | 4 | |||||
| B Tumour induced | 2 | 4 | 1– | <1 | |||||||
| C Parasitic | 0 | 0 | — | — | — | — | |||||