Table 2 The mean and standard deviation of anterior segment indices in mentally retarded children with and without cerebral palsy.
From: Anterior segment indices in mentally retarded children
Without cerebral palsy | With cerebral palsy | P-value* | |
|---|---|---|---|
Mean ± SD | Mean ± SD | ||
Mean keratometry (diopter) | 43.73 ± 1.86 | 44.26 ± 2.13 | 0.178 |
Minimum keratometry (diopter) | 42.95 ± 1.97 | 43.48 ± 1.84 | 0.165 |
Maximum keratometry (diopter) | 44.52 ± 2.13 | 45.05 ± 2.65 | 0.255 |
Corneal astigmatism (diopter) | 1.57 ± 1.72 | 1.57 ± 1.65 | 0.997 |
Central corneal thickness (micron) | 536.81 ± 54.67 | 534.26 ± 40.62 | 0.773 |
Corneal diameter (mm) | 11.82 ± 0.43 | 11.90 ± 0.41 | 0.266 |
Anterior chamber depth (mm) | 3.28 ± 0.23 | 3.30 ± 0.25 | 0.773 |
Anterior chamber volume (mm3) | 197.42 ± 30.20 | 198.86 ± 29.21 | 0.780 |
Anterior chamber angle (degree) | 40.18 ± 5.06 | 41.26 ± 5.52 | 0.203 |
Corneal volume | 60.14 ± 5.23 | 60.98 ± 4.19 | 0.347 |
Index of surface variance | 29.8 ± 18.50 | 32.23 ± 20.44 | 0.470 |
Index of vertical asymmetry | 0.23 ± 0.16 | 0.27 ± 0.19 | 0.200 |
Keratoconus index | 1.03 ± 0.04 | 1.06 ± 0.07 | 0.013 |
Central keratoconus index | 1.01 ± 0.01 | 1.02 ± 0.02 | 0.046 |
Index of height asymmetry | 6.35 ± 4.78 | 11.2 ± 14.11 | 0.015 |
Index of height decentration | 0.02 ± 0.02 | 0.03 ± 0.03 | 0.029 |
