Summary of baseline characteristics of the study population
| I-BiT DVD | I-BiT games | Non-I-BiT games | |
|---|---|---|---|
| Number randomised | 24 | 26 | 25 |
| Mean (SD) age (years) | 5.9 (1.2) | 6.0 (1.3) | 5.6 (1.1) |
| Gender | |||
| Male (%) | 13 (54%) | 17 (65%) | 13 (52%) |
| Female (%) | 11 (46%) | 9 (35%) | 12 (48%) |
| Experience with computer games | |||
| Does not play | 3 | 5 | 4 |
| <30 min/day | 12 | 7 | 12 |
| 30–60 min/day | 6 | 10 | 4 |
| 1–2 h/day | 2 | 4 | 3 |
| >2 h/day | 1 | 0 | 2 |
| Type of amblyopia | |||
| Strabismic | 13 | 6 | 5 |
| Mixed | 11 | 17 | 18 |
| Anisometropic | 0 | 3 | 2 |
| Previous amblyopia treatment | |||
| Yes | 19 | 20 | 18 |
| Occlusion | 19 | 20 | 17 |
| Penalisation | 4 | 3 | 7 |
| None | 5 | 6 | 7 |
| Acuity in amblyopic eye at baseline (logMAR) | |||
| Mean | 0.53 | 0.49 | 0.50 |
| Range | 0.36–0.65 | 0.38–0.55 | 0.35–0.65 |
| SD | 0.21 | 0.17 | 0.20 |
| Fixation with amblyopic eye | |||
| Foveolar | 3 | 1 | 2 |
| Parafoveolar | 5 | 11 | 4 |
| Parafoveal | 8 | 5 | 2 |
| Eccentric | 4 | 1 | 2 |
| No view with amblyoscope | 4 | 8 | 15 |