Optic disc
Membrane tissue on the optic disc may cause macular schisis associated with a glaucomatous optic disc without optic disc pits
... an optic nerve ...The optic nerve head was large (the disc-to- macula distance to disc diameter ratio was ...optic disc. Spectral domain OCT showed retinal schisis extending from ...
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Automatic Segmentation of Optic Disc in Eye Fundus Images: A Survey
... Obviously, the preprocessing techniques potentially lead to “faster” and “more accurate” results at the further segmentation stage. For instance, the fundus images in most of the presented algorithms were initially ...
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Optic disc localization in retinal images using histogram matching
... and optic disc. Optic disc is the brightest region in the retinal image and the blood vessels originate from its center ...[1]. Optic disc is a key reference for recog- nition ...
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Locating the Optic Disc in Retinal Images Using Morphological Techniques
... DR is diagnosed by the examination of retinographies. This use of digital images of the retinal surface could be exploited for computerized early detection of DR. A robust system that enabled non-experts to filtrate ...
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A study of the causes of bilateral optic disc swelling in Japanese patients
... bilateral disc swelling. Results: The most common cause of the bilateral disc swelling was increased intracranial pressure (ICP) (59%); followed by pseudopapillitis (16%); uveitis (8%); hypertensive retin- ...
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Classification of Eye Diseases Using Optic Cup Segmentation and Optic Disc Ratio and Its Implementation Using VHDL
... the optic disc and the anterior segment and the abnormal growth of any geometry in the eye ...the optic disc are affected and this leads to progressive loss of ...using optic ...
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Clinical Reasoning: An unusual pattern of optic disc swelling and visual loss
... of optic disc swelling and a macular star (a ring of hard exudates in the macula), is usually due to infectious diseases such as cat- scratch disease, Lyme disease, syphilis, or toxoplas- ...anterior ...
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Optic disc shape in patients with long-lasting unilateral esotropia and exotropia
... the optic disc in moderately myopic eyes, and the develop- ment of parapapillary gamma zone as Bruch’s membrane free zone on the temporal side of the optic disc ...the optic nerve ...
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Segment of Blood Vessels and Optic Disc in the Fundus Retinal Images
... and optic disk and diseases in fundus retinal ...and optic disk ...and optic disk detection, that causes numerous vessel and optic disk ...and optic disc segmentation ...
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Optic Disc Boundary and Vessel Origin Segmentation of Fundus Images
... Abstract—This paper presents a novel classification-based optic disc (OD) segmentation algorithm that detects the OD boundary and the location of vessel origin (VO) pixel. First, the green plane of each ...
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Optic disc topography of normal tension glaucoma patients in Malaysia
... mean optic disc topography between Malay NTG and control groups is shown in Table ...larger disc and cup areas, smaller rim areas, increased cup volume, decreased rim volume, a higher cup to ...
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Automatic Detection of Optic disc in Eye Fundus Images A REVIEW
... ‘Optic Disc’ is commonly used to describe the portion of the optic nerve that is clinically visible on ...examination. Optic Disk is a small spot on the retinal surface of eye and is located ...
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<p>Optic disc pit maculopathy: tamponade of maculoschisis</p>
... Figure 1 (A) At presentation. Fundus photograph of optic disc, maculoschisis (outlined with white arrows), and inferior coloboma. There is slight depigmentation within the small subfoveal detachment, but no ...
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Unilateral Optic Disc Edema in a Paediatric Patient: Diagnostic Dilemmas and Management
... unilateral optic disc oedema ...untreated disc oedema results in atrophy and permanent vision impairment ...the optic neuritis treatment trial (ONTT) was developed to evaluate corticosteroid ...
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Clinical validation of a smartphone-based adapter for optic disc imaging in Kenya
... 100 optic nerve examinations acquired using Peek Retina, bespoke software (Peek Grader, Figure 2) was used by two local study examiners (one non-ophthalmologist experienced in retinal examination, one with no ...
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Optic disc segmentation for glaucoma screening system using fundus images
... the optic disc (OD) is an important and essential step in creating a frame of reference for diagnosing optic nerve head pathologies such as ...of optic nerve head ...the disc boundaries ...
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Obvious optic disc swelling in a patient with cryopyrin-associated periodic syndrome
... bilateral optic disc swelling and retinal vascular sheathing around the optic discs, with absence of dilated capillaries on the optic discs, vitreous opacifications, and retinal exudates ...
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Normative data for optic disc vertical cup-to-disc ratio and intraocular pressure in London 2012 competitors and support teams
... One of the challenges faced with studies such as these is that the data available tends to be ad hoc and may not be what you would choose to use if you were planning a research project. In an ideal world, you would ...
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Assessment of stereoscopic optic disc images using an autostereoscopic screen – experimental study
... glaucomatous optic disc characteristics, and assessment of quantitative optic disc parameters was equivalent between autostereoscopic screen viewing and a commonly used existing method of ...
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Optic Disc Drusen in a Child Diagnosed with Alport Syndrome—Case Report
... bilateral disc elevation that was worse on the right eye, and visual acuity of 6/6 and 6/60 on right and left eyes recorded ...bilateral optic disc drusen as the cause for his ...
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