Optic nerve hypoplasia

Optic nerve hypoplasia
Left eye affected by ONH, originally turned-in at birth, corrected by surgery under 12 months of age
SpecialtyOptometry, Medical genetics
SymptomsStrabismus, Partial or complete blindness in affected eye(s), amblyopia, Unintentional eye movement
ComplicationsVision issues or Comeplete/partial blindness
TreatmentEye patch to 'strengthen' affected eye

Optic nerve hypoplasia (ONH) is a medical condition arising from the underdevelopment (hypoplasia) of the optic nerve(s). This condition is the most common congenital optic nerve anomaly. The optic disc appears abnormally small because not all the optic nerve axons have developed properly. It is often associated with endocrinopathies (hormone deficiencies), developmental delay, and brain malformations. The optic nerve, responsible for transmitting visual signals from the retina to the brain, has approximately 1.2 million nerve fibers in the average person. In those diagnosed with ONH, however, there are noticeably fewer nerves.

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