Optic Nerve hypoplasia
Inheritance patterns and prenatal diagnosis
Inheritance patterns
Most cases of ONH occur sporadically without any other affected family members.
Prenatal diagnosis
ONH is very rarely inherited. Prenatal diagnosis is not available. However, it is possible to image the septum pellucidum, a structure in the brain, antenatally by ultrasound. Absence of this structure may be an indicator of ONH. Obstetricians should be made aware if a previous child has ONH so that this can be checked carefully but absence of the structure does not have to be associated with ONH.
How is it treated?
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