| Percentage | Cases | |
|---|---|---|
| Gender | ||
| Male | 0% | 0/2 |
| Female | 100.0% | 2/2 |
| General | ||
| Birth Length abnormalities | 0% | 0/0 |
| Birth Weight abnormalities | 0% | 0/1 |
| Birth Head circumference abnormalities | 0% | 0/0 |
| Current Height abnormalities | 0% | 0/0 |
| Current Weight abnormalities | 0% | 0/0 |
| Current Head circumference abnormalities | 0% | 0/0 |
| Neurology | ||
| Neurological abnormalities | 100.0% | 2/2 |
| Attention deficit hyperactivity disorder | 100.0% | 2/2 |
| Behavioral problems | 100.0% | 2/2 |
| Attention deficit hyperactivity disorder | 100.0% | 2/2 |
| Facial abnormalities | ||
| Abnormality of the eye | 50.0% | 1/2 |
| Abnormal full-field electroretinogram | 50.0% | 1/2 |
| Attenuation of retinal blood vessels | 50.0% | 1/2 |
| Bone spicule pigmentation of the retina | 50.0% | 1/2 |
| Visual and hearing impairments | ||
| Abnormal vision | 100.0% | 2/2 |
| Attenuation of retinal blood vessels | 100.0% | 2/2 |
| Bone spicule pigmentation of the retina | 100.0% | 2/2 |
| Abnormal electroretinogram | 50.0% | 1/2 |
| Pigmentary retinal degeneration | 50.0% | 1/2 |