Table 3. Clinical characteristics of control age-matched children.
| Children | Corrected visual acuity | Near Point of Convergence | Heterophoria near | Divergence near | Convergence near | Stereoacuity |
| (years) | (cm) | (dioptries) | (dioptries) | (dioptries) | (TNO) | |
| C1 (7.7) | RE: 20/20 | 3 | −2 | 14 | 35 | 60″ |
| LE: 20/20 | ||||||
| C2 (9.4) | RE: 20/20 | 5 | −4 | 14 | 30 | 60″ |
| LE: 20/20 | ||||||
| C3 (6.8) | RE: 20/20 | 0 | 2 | 10 | 35 | 30″ |
| LE: 20/20 | ||||||
| C4 (10.4) | RE: 20/20 | 0 | −2 | 20 | 40 | 30″ |
| LE: 20/20 | ||||||
| C5 (13.7) | RE: 20/20 | 5 | −6 | 18 | 25 | 60″ |
| LE: 20/20 | ||||||
| C6 (8.1) | RE: 20/20 | 8 | −2 | 12 | 40 | 60″ |
| LE: 20/20 | ||||||
| C7 (7.3) | RE: 20/20 | 0 | 2 | 12 | 30 | 30″ |
| LE: 20/20 | ||||||
| C8 (11.7) | RE: 20/20 | 0 | 0 | 16 | 40 | 60″ |
| LE: 20/20 | ||||||
| C9 (13.8) | RE: 20/20 | 0 | −2 | 14 | 40 | 30″ |
| LE: 20/20 | ||||||
| C10 (9.2) | RE: 20/20 | 5 | −8 | 18 | 30 | 30″ |
| LE: 20/20 |
LE, RE, left eye, right eye. The deviation of the eyes was assessed with cover-uncover test and prism; the binocular vision was evaluated with the TNO test for stereoscopic depth discrimination. Negative values represent a divergent deviation, positive values a convergent deviation.