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Year : 1999  |  Volume : 47  |  Issue : 4  |  Page : 229-231

Optic disc size in ocular hypertension

VST Center for Glaucoma Care, L.V. Prasad Eye Institute, Hyderabad, India

Correspondence Address:
G C Sekhar
VST Center for Glaucoma Care, L.V. Prasad Eye Institute, Hyderabad
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Source of Support: None, Conflict of Interest: None

PMID: 10892478

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Purpose: To study the optic disc size in eyes with ocular hypertension (OHT) in comparison to primary open-angle glaucoma (POAG) and normals. Methods: Optic disc photographs obtained with the Nidek 3dx NM camera were digitized (Nikon coolscan) and disc area calculated using Littmann correction in a randomly chosen eye of 28 OHT, 42 POAG and 30 normal subjects. OHT was defined as increased intraocular pressure with no disc or field changes suggestive of glaucoma with open angles. Results: The optic disc area in OHT was 9.47 1.09 mm2; 12.27 2.87mm2 in POAG; and 12.11 2.83 mm2 in normal individuals. Conclusion: Using magnification corrected morphometry and the criteria for OHT diagnosis, the optic disc area in OHT was significantly smaller (p<0.0001) in POAG and normals.

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