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Iris Colour, Optic Disc Dimensions, Degree and Progression of Glaucomatous Optic Nerve Damage |
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| Iris Colour, Optic Disc Dimensions, Degree and Progression of Glaucomatous Optic Nerve Damage |
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作者：Jost B. … 文章来源：Department of Ophthalmology, Faculty of Clinical Medicine Mannheim, University of Heidelberg, Mannheim, Germany 点击数：1967 更新时间：2006/7/10 0:29:28 
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| Purpose. To evaluate whether iris colour influences size and shape of the optic nerve head and risk for glaucoma progression.
Methods. The hospital-based observational study included 1973 eyes of 1012 Caucasian subjects with ocular hypertension or chronic open-angle glaucoma. For all patients, colour stereo optic disc photographs were evaluated, and corneal pachymetry and achromatic perimetry were performed.
Main outcome measures were optic nerve head parameters, the development or progression of visual field defects, and iris colour.
Results. In most of the study groups, size of the optic disc, neuroretinal rim, and alpha zone and beta zone of parapapillary atrophy, retinal vessel diameter, and central corneal thickness did not differ significantly between eyes with blue, green, brown and mixed iris colour. In the normal-pressure glaucoma group, neuroretinal rim area was smallest in the population with mixed-coloured eyes and largest in the group of eyes with brown irides (p=0.001 after correction for inter-eye-dependency and multiple testing). For the ocular hypertensive subjects and glaucoma patients with follow-up examinations, the rate of development or progression of glaucomatous visual field loss was not significantly associated with iris colour (p=0.060).
Conclusions. In Caucasian subjects, iris colour does not have a major association with the size of the optic nerve head structures, central corneal thickness, and retinal arterial diameter. In Caucasian patients with ocular hypertension or chronic open-angle glaucoma, an influence of iris colour on the risk for development or progression of glaucomatous visual field defects could not be confirmed.
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