Optic Atrophy

Optic atrophy refers to the pale appearance of the optic disc that occurs when optic nerve fibers have been damaged or died. It's a sign of prior injury, not a diagnosis itself.

What It Looks Like

• Pale optic disc (instead of normal pink/orange)
• Reduced number of visible small blood vessels
• May be segmental or complete
• Cupping may be present
• OCT shows nerve fiber layer thinning

Common Causes

Inflammatory

• Prior optic neuritis
• NMO attacks

Vascular

• Ischemic optic neuropathy
• Giant cell arteritis

Compressive

• Pituitary tumor
• Optic nerve sheath meningioma

Hereditary

• LHON
• Dominant optic atrophy

Other

• Papilledema (long-standing)
• Glaucoma
• Trauma
• Toxic/nutritional
• Neonatal injury (Wallerian degeneration)

Finding the Cause

• Detailed history
• Visual field testing
• OCT
• MRI brain and orbits
• Blood tests as indicated

What It Means

• The underlying damage has occurred
• Vision loss is usually permanent
• Focus shifts to:
  • Finding and treating underlying cause
  • Preventing further damage
  • Low vision rehabilitation

Prognosis

Once optic atrophy develops, the nerve fiber loss is permanent. The goal is to preserve remaining vision and address any ongoing or treatable cause.