it is a heriditory disease of mitochondrial pathology, transmitted by mother.usually males are affected. it involves the optic nerve. and presents in early young age.and progressing to blindness upto young middle age.if a father is affected his son is likely not to be affected but his daughter is a carrier and her son is likely to be affected .it should be diagnosed in early childhood and if smoking and alcohol and some medicines eg ethambutol are avoided and vit
b12,vitc,vit e and some medicines are given then upto late middle age the blindness can be avoided.
Next Steps
if the daughter and grand daughter of such a person does not conceive ie don't give birth. to a child then the chain can be broken