On fundoscopy the nasal margin is usually more blurred than the temporal margins.

Normal optic cup: optic disc ratio is : 01 to 0.5. In patients with glucoma, the ratio is increased. Patient with very small or inconspicuous cups are at risk of anterior ischaemic optic neuropathy.

Last updated byGanealingam Narenthiran on June 1, 2023

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