منابع مشابه
Glaucomatous-Type Optic Discs in High Myopia
PURPOSE To assess the prevalence of glaucoma in patients with high myopia defined as myopic refractive error of >-8 diopters or axial length ≥26.5 mm. METHODS The hospital-based observational study included 172 patients (336 eyes) with a mean age of 61.9±12.3 years and mean axial length of 30.1±2.3 mm (range: 24.7-39.1mm). Glaucomatous-type optic discs were defined by glaucomatous optic disc ...
متن کاملScanning laser tomography to evaluate optic discs of normal eyes.
PURPOSE To investigate the effects of age, eye refraction, and disc area on topographic parameters of the optic nerve head in normal volunteers, using the Heidelberg Retina Tomograph. METHODS Seventy-seven eyes of 77 normal volunteers were examined by scanning laser tomography. The topographic parameters analyzed were disc area, cup area, cup/disc area ratio, rim area, cup volume, rim volume,...
متن کاملLevel Set Segmentation of Optic Discs from Retinal Images
Analysis of retinal images can provide important information for detecting and tracing retinal and vascular diseases. The purpose of this work is to design a method that can automatically segment the optic disc in the digital fundus images. The template matching method is used to approximately locate the optic disc centre, and the blood vessel is extracted to reset the centre. This is followed ...
متن کاملRetinal Nerve Fiber Layer Protrusion Associated with Tilted Optic Discs
SIGNIFICANCE This study resulted in the identification of an optic nerve head (ONH) feature associated with tilted optic discs, which might potentially contribute to ONH pathologies. Knowledge of such findings will enhance clinical insights and drive future opportunities to understand disease processes related to tilted optic discs. PURPOSE The aim of this study was to identify novel retinal ...
متن کاملDouble optic discs, optic disc coloboma, and pit: spectrum of hybrid disc anomalies in a single eye.
(Figure 2). The mean±SD thickness of the retina at the site of the cleavages was 106.4±17.7 m and that of the adjacent unaffected retina was 254.2±25.8 m. The mean thickness of the retina at the site of the cleavages was significantly thinner than that of the adjacent unaffected retina (P .001, Mann-Whitney U test). The fluorescein angiograms showed no abnormalities. The results of standard aut...
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ژورنال
عنوان ژورنال: Indian Journal of Ophthalmology
سال: 2020
ISSN: 0301-4738
DOI: 10.4103/ijo.ijo_1874_19