Specialist Eye surgery in Windsor and Reading
Andrew Pearson MA MRCP FRCOphth
Consultant Ophthalmic and Oculoplastic Surgeon
Eye Surgery in Berkshire
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Anterior ischaemic optic neuropathy


The blood supply to the optic nerve itself is compromised leading to loss of vision. Generally this occurs in the anterior portion of the nerve close to the eye and the effects may be visible on examining the optic nerve as it enters the eye. Less commonly the posterior portion is affected (posterior ischaemic optic neuropathy). 

The cause is small blood vessel infarction from atherosclerosis in 90% and blood vessel inflammation (mainly Giant cell arteritis) in 10%.

Clinical Features

Sudden or rapidly progressive loss of part or all of the vision, usually in only one eye
If partial, usually upper or lower half of visual field
Headache or tender skin around the temples may indicate underlying GCA


See ophthalmologist urgently


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  • Swollen, infarcted optic nerve
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