Results of heritability analysis for ocular refraction and its determiners based on aetiological model fitting. Parameter estimate (95% confidence interval of estimate)
| Best fitting model | A: Additive genetic effects | D: Dominant genetic effects | E: Unique environmental effects | N | |
| RefractionRight | AE | 0.91 (0.86; 0.94) | 0.09 (0.06; 0.14) | 53/59 | |
| Refraction Left | AE | 0.91 (0.86; 0.94) | 0.09 (0.06; 0.14) | 49/61 | |
| Refraction -transRight | AE | 0.89 (0.82; 0.93) | 0.11 (0.07; 0.18) | 53/59 | |
| Refraction -trans Left | AE | 0.91 (0.85; 0.94) | 0.09 (0.06; 0.15) | 49/61 | |
| Total refractionRight | AE | 0.94 (0.90; 0.96) | 0.06 (0.04; 0.10) | 51/59 | |
| Total refraction Left | AE | 0.93 (0.89; 0.96) | 0.07 (0.05; 0.11) | 49/60 | |
| Axial lengthRight | AE | 0.94 (0.91; 0.96) | 0.06 (0.04; 0.09) | 53/59 | |
| Axial length Left | AE | 0.94 (0.90; 0.96) | 0.06 (0.04; 0.10) | 49/60 | |
| ACDRight | DE | 0.94 (0.90; 0.96) | 0.06 (0.04; 0.10) | 53/59 | |
| ACD Left | DE | 0.88 (0.81; 0.92) | 0.12 (0.08; 0.19) | 50/61 | |
| Lens thicknessRight | DE | 0.93 (0.89; 0.96) | 0.07 (0.05; 0.11) | 53/59 | |
| Lens thicknessLeft | DE | 0.90 (0.85; 0.94) | 0.10 (0.06; 0.16) | 49/61 | |
| RadccRight | AE | 0.90 (0.84; 0.93) | 0.10 (0.07; 0.16) | 52/59 | |
| RadccLeft | AE | 0.92 (0.87; 0.95) | 0.08 (0.05; 0.13) | 49/61 |
Refraction -trans = refraction transformed to Gaussian distribution, ACD = anterior chamber depth and Radcc = mean radius of corneal curvature.
Estimated parameters:
A = proportion of phenotypic variation because of additive genetic effects.
D = proportion of phenotypic variation because of dominant genetic effects.
E = proportion of phenotypic variation because of unique environmental effects.
N = number of MZ/DZ pairs.