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Optic nerve hyperplasia 20200414_194122 (Complications (Encepheloceles,…
Optic nerve hyperplasia
Defination
Congenital disorder characterised by underdevelopment of the optic nerve
Often associated with andocrinopathies
Cause
Gastational and exposure history
In most cases there is no know cause
Mutation of genes involved in transcription regulation
Symptoms
Vision
Hypthalamatic dysfunction
Meurolodiagraphic abnormalities
Pathophysiology
Arising from underdevelopment of the optic nerve
Optic disk appears abnormally small
Most common congenital optic nerve anomaly
Because not all optic nerve axons has developed properly
Complications
Encepheloceles
Anomalies of ventricles
Septo optic dysplasia
Anencephaly
Cerebral atropy
Rarely tumors
Risk factors
Maternal smoking
Patern birth
First parity
Young maternal age
Treatment
Surgery
Cannot be cured
Patching of better eye
Diagnosis
Visual asvuity
Disk to makula;disk diameta
Ophthalmoscopic exam
Papillary reactions
