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J. B. Jonas, B. Harder, B. Harder; Central Retinal Artery and Vein Collapse Pressure in Giant Cell Arteritis versus Nonarteritic Anterior Ischemic Optic Neuropathy. Invest. Ophthalmol. Vis. Sci. 2007;48(13):4414.
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© ARVO (1962-2015); The Authors (2016-present)
To measure the central retinal artery (CRA) and vein (CRV) collapse pressure in anterior ischemic optic neuropathy.
Using a Goldmann contact lens associated ophthalmodynamometer, the diastolic collapse pressure of the CRA and CRV were measured in 6 patients (8 eyes) with giant cell arteritis induced anterior ischemic optic neuropathy (GC-AION) and in 10 patients (12 eyes) with acute non-arteritic anterior ischemic optic neuropathy (NAION).
CRA collapse pressure was significantly (P=0.001; 95% confidence interval (CI):-68.7,-20.0) lower in the GC-AION group (52.7Ã‘Â±24.6 arbitrary units) than in the NAION group (97.0Ã‘Â±25.8 arbitrary units). CRV collapse pressure did not vary significantly (P=0.47).
As measured by ophthalmodynamometry, CRA pressure is significantly lower in GC-AION than in NAION. CRV pressure does not vary markedly. These finding may be helpful for the clinical differentiation between GC-AION and NAION, and may give hints for the pathogenesis.
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