منابع مشابه
The optic disc in glaucoma, III: diffuse optic disc pallor with raised intraocular pressure.
Ten patients (14 eyes) with chronic simple glaucoma are described, each with features atypical for this disease and more suggestive that each had suffered an acute ischaemic optic neuropathy. Diagnosis of an acute ischaemic optic neuropathy in these cases is important, as treatment of ocular hypertension in the contralateral 'normal' eye may prevent a similar attack. Optic nerve disease and vis...
متن کاملUsing ImageJ to Evaluate Optic Disc Pallor in Traumatic Optic Neuropathy
PURPOSE To evaluate optic disc pallor using ImageJ in traumatic optic neuropathy (TON). METHODS This study examined unilateral TON patients. The optic disc was divided into 4 quadrants (temporal, superior, nasal, and inferior), consistent with the quadrants on optical coherence tomography (OCT) retinal nerve fiber layer (RNFL) thickness maps. Optic disc photography was performed and disc pall...
متن کاملComparison of reliability of the eye optic disc cup and pallor areas in glaucoma diagnostics.
The aim of this paper is to compare the glaucoma diagnostic reliability of two optic disc parameters: the relative cup area size determined by the Heidelberg retina tomography and the relative pallor area size determined by the proposed algorithm of the optic disc image analysis. Both parameters were measured for 240 normal healthy eyes and 240 glaucomatous eyes. The diagnostic reliability of s...
متن کاملComparison of computer-assisted versus manual optic nerve head pallor measurement.
Computerized methods of examining the optic nerve head offer the possibility of providing consistent, reliable, and accurate measurements of the nerve head. The reliability and accuracy of such instruments must be examined to confirm this. This research was undertaken to gain an insight into the accuracy of such a system, which takes its measurements by tracking the luminance boundaries of the ...
متن کاملPhotogrammetric Measurement of the Optic Disc Cup in Glaucoma
Cupping of the optic disc associated with the atrophy of the optic nerve is one of the earliest recognizable signs of glaucoma . Measurements of the optic cup changes would provide objective evaluation in early diagnosis and therapy of glaucomatous eyes, by following the course of the patient in relation to the loss of visual field and medical or surgical control . A semi-analytical photogramme...
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ژورنال
عنوان ژورنال: Eye
سال: 1991
ISSN: 0950-222X,1476-5454
DOI: 10.1038/eye.1991.141