Table 1.
Characteristics of the participants by age group
| PAI-CY 0–2 | PAI-CY 3–6 | PAI-CY 7–12 | PAI-CY 13–17 | PAI-YA 18–25 | |
|---|---|---|---|---|---|
| Age in years | |||||
| Mean (range) | 19.3 (8–30) a | 4.5 (3–6) | 9.8 (8–12) | 15 (13–17) | 22 (18–26) |
| Sex | |||||
| Male, N (%) | 3 (50) | 5 (83.3) | 4 (66.7) | 5 (83.3) | 1 (16.7) |
| Visual acuity | |||||
| Blind, N (%) b | 1 (17%) | 1 (17%) | 1 (17%) | ||
| Low vision, N (%) | 3 (50%) | 3 (50%) | 5 (83%) | 5 (83%) | 5 (83%) |
| Unknown, N (%) | 3 (50%) | 3 (50%) | |||
| Ophthalmic diagnosis | |||||
| Cerebral, N (%) | 2 (33.3%) | 2 (33.3%) | 1 (16.7%) | 1 (16.7%) | 1 (16.7%) |
| Retinal, N (%) | 1 (16.7%) | 5 (83.3%) | 3 (50%) | 4 (66.7%) | |
| Lens, N (%) | 1 (16.7%) | ||||
| Optic, N (%) | 1 (16.7%) | 1 (16.7%) | |||
| Unknown, N (%) | 3 (50%) | 3 (50%) | 1 (16.7%) | ||
| Proxy parents | |||||
| Mother, N (%) | 2 (33.3%) | 4 (66.7%) | 6 (100%) | 4 (66.7%) | |
| Father, N (%) | 2 (33.3%) | 1 (16.7%) | 1 (16.7%) | ||
| Together, N (%) | 2 (33.3%) | 1 (16.7%) | 1 (16.7%) | ||
| Duration in minutes | |||||
| Mean (range) | 13.3 (5–25) | 21.7 (15–45) | 16.7 (5–25) | 14.2 (10–20) | 45.8 (30–90) |
aAge in months instead of years
bBlind: visual acuity ≤ 0.05 and/or visual field ≤ 10°