Optic nerve atrophy occurs when the nerve fibres that transmit visual information to the brain are damaged. This leads to lasting effects on clarity, brightness perception, peripheral vision, and colour recognition.
The optic nerve acts as a critical conduit, carrying visual signals from the retina to the brain. When its fibres deteriorate – due to conditions such as glaucoma, vascular issues, inflammation, compressive tumours, or congenital anomalies – it results in disrupted visual processing. Patients may experience blurred vision, reduced brightness, impaired side (peripheral) vision, and altered colour perception.
Diagnosis
A comprehensive examination is vital to confirm optic atrophy, typically including:
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Ophthalmoscopy
Detects optic disc pallor, a hallmark of atrophy. -
Visual Function Tests
Assess visual acuity, colour discrimination, brightness sensitivity, and peripheral vision. -
Advanced Imaging
OCT scans evaluate retinal nerve fibre thickness. MRI or CT may be used where compression or neurological involvement is suspected. -
History & Systemic Evaluation
Identifying underlying causes—such as glaucoma, vascular disorders, tumors, or inherited conditions – is key to preventing further deterioration.
Treatment options
While optic nerve damage cannot be reversed, steps can be taken to halt further decline and support remaining vision:
