The pathogenesis of<unk>  has yet to be elucidated. It appears that the dystrophy is primary, since subjective and objective abnormalities of<unk>  function are found before ophthalmoscopic changes can be seen. However, the retinal pigment epithelium (RPE) rapidly becomes involved, leading to a retinal dystrophy primarily involving the macula. The histological examination of the eyes of one such patient showed that the outer nuclear layer of<unk> s and rods had disappeared completely, whereas the RPE showed pronounced pigment changes. There was also atrophy of the temporal disc.
Cone dystrophy
Muscular dystrophy
Giant axonal neuropathy
Cuban neuropathy
Polyneuropathy
Chondrodystrophy
Brody myopathy
Tropical ataxic neuropathy