Neuro-Ophthalmology is a super specialty that merges the fields of neurology and ophthalmology. Neuro-ophthalmologists are responsible for the diagnosis and management of complex systemic diseases of the nervous system that affect vision, eye movements and alignment, as well as pupillary reflexes. Your eye doctor will usually suggest you visit an expert in Neuro-Ophthalmology after a comprehensive eye examination, in case you need special care. Often, the symptoms that prompt such a referral include those associated with optic nerve disease or diseases of the visual pathway (the nervous system component that connects the eyes to the brain). Other reasons could be the diseases affecting the pupils of the eye, and certain kinds of squint (especially paralytic).

Common Symptoms that Require Attention

The typical symptoms that could signify a neuro-ophthalmological problem include:

• Sudden decrease or loss of vision
• Sudden transient loss of vision (called transient ischemic attack or eye stroke)
• Visual hallucinations
• Double vision or diplopia
• Intractable headaches
• Pupillary abnormalities (sluggish reaction, the difference in size of the pupils)
• Sudden onset of difficulties in identifying colors
• Inability to tolerate bright light
• Visual Field Defects
• Squint or strabismus (especially adult onset)

Papilledema

Papilledema is characterized by the swelling of the optic nerve head (the part of the optic nerve which can directly be seen by your eye doctor during a retinal evaluation) due to increased pressure from inside the brain. It may be due to tumors, infections like meningitis, encephalitis, etc.

Toxic or Nutritional Optic Neuropathy

The optic nerve may be damaged due to toxic substances found in tobacco & alcohol. In fact, the optic nerve damage is often due to lack of nutrients and deficiency of vitamin B-complex and folic acid as well. These diseases also present as decreased vision.

Squint or Strabismus

A misalignment of the eye, especially when sudden in onset, and associated with double vision is often due to paralysis of one or more of the small muscles of the eye, and is called paralytic strabismus. The eye shows limitations of ocular movement as well.

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