Changes of Optic Disc Cupping and Pallor Over Time
Ocular pressures, mean visual field thresholds, optic disc cup volumes and areas of optic disc pallor were measured and displayed over time in one eye of a series of six normal, ocular hypertensive and glaucomatous patients with increasing risk for visual field loss, but with stable visual fields. Significant and borderline significant trends of changes of area of optic disc pallor were observed in three eyes associated with similar trends in ocular pressure in two eyes, even though the visual fields showed no significant trends with time. The variation over time of optic disc pallor was less than the variations observed with the other ocular measurements. Maximum spontaneous variations in optic disc cupping of 34.4% and 53.1% and 6.1% and 23.2% for pallor were observed respectively in the untreated normal and ocular hypertensive eyes. These observations demonstrate the importance of measuring the optic disc to detect progression of disease in the presence of stable visual fields.
KeywordsVisual Field Optic Disc Ocular Hypertension Visual Field Loss Congenital Glaucoma
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