Table 3.
Percentile of Composite Amplitude and Velocity of Fast and Slow Fixation Eye Movements of Fellow Eye and Amblyopic Eye During Monocular and Binocular Viewing Across the Four Groups
| Composite Amplitude (Degrees) of Fast FEMs | ||||||
|---|---|---|---|---|---|---|
| Percentile | Group 0 | Group 1 | Group 2 | Group 3 | Main Effect | Interaction |
| 25th | 0.39 ± 0.20 (0.45 ± 0.24) 0.45 ± 0.24 (0.40 ± 0.20) | 0.36 ± 0.14 (0.39 ± 0.20) 0.48 ± 0.28 (0.38 ± 0.14) | 0.40 ± 0.19 (0.37 ± 0.15) 0.46 ± 0.15 (0.38 ± 0.12) | 0.42 ± 0.15 (0.40 ± 0.28) 0.97 ± 1.0 (0.50 ± 0.36) | F = 0.15, P = 0.71, ηp2 = 0.004; F = 8.6, P = 0.006, ηp2 = 0.19 | F = 0.83, P = 0.49, ηp2 = 0.064; F = 2.4, P = 0.082, ηp2 = 0.17 |
| 50th | 0.56 ± 0.26 (0.60 ± 0.29) 0.58 ± 0.29 (0.60 ± 0.28) | 0.50 ± 0.23 (0.56 ± 0.30) 0.68 ± 0.35 (0.60 ± 0.32) | 0.61 ± 0.40 (0.56 ± 0.20) 0.65 ± 0.22 (0.54 ± 0.17) | 0.54 ± 0.19 (0.55 ± 0.37) 1.1 ± 1.1 (0.65 ± 0.40) | F = 0.18, P = 0.68, ηp2 = 0.005; F = 5.6, P = 0.023, ηp2 = 0.14 | F = 0.53, P = 0.66, ηp2 = 0.042; F = 2.2, P = 0.11, ηp2 = 0.15 |
| 75th | 0.72 ± 0.34 (0.83 ± 0.40) 0.75 ± 0.32 (0.81 ± 0.38) | 0.69 ± 0.34 (0.81 ± 0.47) 0.92 ± 0.46 (0.89 ± 0.53) | 0.94 ± 0.66 (0.79 ± 0.27) 1.0 ± 0.52 (0.81 ± 0.30) | 0.71 ± 0.26 (0.74 ± 0.45) 1.4 ± 1.2 (0.89 ± 0.50) | F = 0.21, P = 0.65, ηp2 = 0.006; F = 2.6, P = 0.14, ηp2 = 0.068 | F = 1.2, P = 0.34, ηp2 = 0.088; F = 1.4, P = 0.27, ηp2 = 0.10 |
| 90th | 0.95 ± 0.40 (1.1 ± 0.49) 0.89 ± 0.33 (0.99 ± 0.41) | 0.91 ± 0.46 (1.1 ± 0.60) 1.3 ± 0.62 (1.3 ± 0.88) | 1.5 ±1.2 (1.0 ± 0.33) 1.4 ± 0.83 (1.1 ± 0.43) | 0.95 ± 0.37 (0.95 ± 0.46) 1.7 ± 1.3 (1.2 ± 0.53) | F = 0.64, P = 0.80, ηp2 = 0.002; F = 2.0, P = 0.17, ηp2 = 0.053 | F = 1.8, P = 0.17, ηp2 = 0.13; F = 1.1, P = 0.38, ηp2 = 0.081 |
| Composite velocity (degrees/s) of slow FEMs | ||||||
| 25th | 0.27 ± 0.17 (0.33 ± 0.13) 0.25 ± 0.090 (0.27 ± 0.094) | 0.35 ± 0.14 (0.32 ± 0.22) 0.35 ± 0.23 (0.37 ± 0.23) | 0.30 ± 0.15 (0.26 ± 0.092) 0.33 ± 0.066 (0.34 ± 0.15) | 0.63 ± 0.40 (1.1 ± 1.7) 2.9 ± 5.1 (1.2 ± 1.7) | F = 0.97, P = 0.33, ηp2 = 0.026; F = 2.3, P = 0.14, ηp2 = 0.061 | F = 0.98, P = 0.41, ηp2 = 0.076; F = 2.3, P = 0.094, ηp2 = 0.16 |
| 50th | 0.50 ± 0.18 (0.56 ± 0.24) 0.44 ± 0.12 (0.54 ± 0.20) | 0.61 ± 0.21 (0.55 ± 0.32) 0.55 ±0.33 (0.66 ± 0.38) | 0.54 ± 0.38 (0.43 ± 0.14) 0.50 ± 0.13 (0.54 ± 0.15) | 1.1 ± 1.1 (1.4 ± 2.0) 3.4 ± 5.7 (1.7 ± 2.0) | F = 0.12, P = 0.74, ηp2 = 0.003; F = 1.8, P = 0.19, ηp2 = 0.048 | F = 0.74, P = 0.54, ηp2 = 0.058; F = 2.5, P = 0.079, ηp2 = 0.17 |
| 75th | 0.79 ± 0.25 (0.91 ± 0.43) 0.81 ± 0.27 (0.98 ± 0.45) | 1.0 ± 0.66 (0.90 ± 0.66) 0.93 ± 0.54 (1.1 ± 0.53) | 0.91 ± 0.91 (0.74 ± 0.18) 0.84 ± 0.29 (0.90 ± 0.31) | 1.6 ± 1.6 (1.7 ± 2.2) 4.2 ± 6.3 (2.1 ± 2.2) | F = 0.031, P = 0.86, ηp2 = 0.001; F = 1.7, P = 0.20, ηp2 = 0.046 | F = 0.34, P = 0.80, ηp2 = 0.027; F = 2.9, P = 0.051, ηp2 = 0.19 |
| 90th | 1.2 ± 0.30 (1.3 ± 0.64) 1.3 ± 0.44 (1.4 ± 0.55) | 1.5 ± 1.1 (1.3 ± 0.96) 1.4 ± 0.90 (1.8 ± 1.2) | 1.7 ± 2.5 (1.1 ± 0.25) 1.2 ± 0.49 (1.4 ± 0.60) | 2.1 ± 2.0 (2.0 ± 2.3) 5.2 ± 6.9 (2.5 ± 2.3) | F = 0.37, P = 0.55, ηp2 = 0.010; F = 1.7, P = 0.20, ηp2 = 0.045 | F = 0.40, P = 0.75, ηp2 = 0.033; F = 3.8, P = 0.019, ηp2 = 0.24* |
Top row = fellow eye and bottom row = Amblyopic eye. All values in parenthesis represent data obtained during both eye viewing.
Group 0 = controls, group 1 = anisometropic amblyopia, group 2 = mixed/strabismic amblyopia without fusion maldevelopment nystagmus, and group 3 = mixed/strabismic amblyopia with fusion maldevelopment nystagmus.
Post hoc Bonferroni correction was performed with P < 0.05 indicated by * = group 0 versus group 3.