Table 2. Clinical characteristics of children with vergence abnormalities.
Children | Glasses correction | Corrected visual acuity | Near Point of Convergence | Heterophoria near | Divergence near | Convergence near | Stereoacuity |
(years) | (cm) | (dioptries) | (dioptries) | (dioptries) | (TNO) | ||
C1 (8.2) | RE: +1.00 | RE: 20/20 | 2 | −2 | 14 | 25 | 60″ |
LE: +0.75 | LE: 20/20 | ||||||
C2 (9.4) | RE: (−0.50)45° | RE: 20/20 | 8 | −10 | 20 | 20 | 120″ |
LE: (−1.50)10° | LE: 20/20 | ||||||
C3 (9.9) | RE: +3.50 | RE: 20/20 | 4 | 4 | 18 | 40 | 120″ |
LE: +1.00 | LE: 20/20 | ||||||
C4 (11.7) | RE: +1.25 | RE: 20/20 | 1 | −4 | 16 | 20 | 60″ |
LE: +1.25 | LE: 20/20 | ||||||
C5 (12) | RE: 0.00 | RE: 20/20 | 0 | 6 | 10 | 45 | 60″ |
LE: 0.00 | LE: 20/20 | ||||||
C6 (12.2) | RE: (−0.50)40° | RE: 20/20 | 9 | −4 | 20 | 25 | 60″ |
LE: (−0.75)150° | LE: 20/20 | ||||||
C7 (12.8) | RE: 0.00 | RE: 20/20 | 5 | −6 | 2 | 40 | 60″ |
LE: 0.00 | 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.