Results 241 to 250 of about 92,261,605 (285)

JointRCNN: A Region-Based Convolutional Neural Network for Optic Disc and Cup Segmentation

IEEE Transactions on Biomedical Engineering, 2020
Objective: The purpose of this paper is to propose a novel algorithm for joint optic disc and cup segmentation, which aids the glaucoma detection. Methods: By assuming the shapes of cup and disc regions to be elliptical, we proposed an end-to-end region ...
Jiang Liu, Yuming Jiang, Zaiwang Gu
exaly   +2 more sources

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Change of ocular parameters in children with large cup-to-disc ratio and interocular cup-to-disc ratio asymmetry

Graefe's Archive for Clinical and Experimental Ophthalmology, 2021
Enlarged optic disc cupping and interocular cup-to-disc ratio (CDR) asymmetry are often important indicators of glaucoma. Clinically, we occasionally encounter children with large CDR and interocular CDR asymmetry during vision screening. This study aimed to report longitudinal change of ocular parameters in children with large cup-to-disc ratio (CDR ...
Hae Ri Yum, Shin Hae Park, Sun Young Shin   +2 more
openaire   +2 more sources

Longitudinal Change of Cup to Disc Ratio in Premature Infants with Enlarged Cup to Disc Ratio and Normal Intraocular Pressure

Seminars in Ophthalmology, 2023
To evaluate the longitudinal change of cup to disc ratio (CDR) in premature infants with enlarged CDR and normal intraocular pressure (IOP).This retrospective, observational study included 283 eyes of 283 premature infants at single center. Infants were divided into enlarged CDR and control groups.
Tae Hwan, Kim, Yoon Hyung, Kwon, Myo Jing, Kim, Sang Wook, Jin   +3 more
openaire   +2 more sources

Optic disc and cup segmentations for glaucoma assessment using cup-to-disc ratio

Procedia Computer Science, 2022
Antonio Cunha, Alexandre Neto, Sérgio Oliveira   +2 more
exaly   +2 more sources

Cup‐to‐disc ratios of Aboriginal and non‐Aboriginal youths [PDF]

Australasian journal of optometry, The, 2006
The determination of the cup-to-disc ratio (C/D) is a standard procedure in an eye examination and is pivotal in the diagnosis of glaucoma. Determining the size of the C/D ratios of different races of young people may be helpful in determining the genetically predetermined differences between Aboriginal and non-Aboriginal people.
Patrick, Gerry, Kate, Johnson
exaly   +3 more sources

Monocular vs. Stereoscopic Measurement of Cup‐To‐Disc Ratios

Optometry and Vision Science, 1990
ABSTRACT Stereoscopic viewing of the optic nerve head and cup has been reported to provide more reliable cup‐to‐disc (C/D) ratio estimates. We investigated the variability in C/D ratio estimates among three experienced optometric clinicians using conventional direct ophthalmoscopy and indirect biomicroscopy with the Volk 90 D lens ...
K E, Rumsey, J M, Rumsey, N E, Leach
openaire   +2 more sources

The Cup-to-Disc Ratio and Central Retinal Vein Occlusion

Archives of Ophthalmology, 1989
Recent reports have suggested that a small optic cup may contribute to the development of certain optic disc disorders, such as anterior ischemic optic neuropathy. In a masked fashion, the cup-to-disc ratios from the fellow eyes of 55 patients with central retinal vein occlusion (CRVO) were compared with 55 controls to determine whether a similar ...
E R, Strahlman, P M, Quinlan, C, Enger, M J, Elman   +3 more
openaire   +2 more sources

Interexaminer Reliability of the Optic Cup to Disc Ratio Assessment

Optometry and Vision Science, 1986
ABSTRACT Previous controlled reliability studies of cup to disc (C/D) ratio estimations may have been biased by lack of criteria for cup determination, small sample size; and/or large interval grouping of collected data. In our study four examiners independently estimated the C/D ratios of 40 patients by direct ophthalmoscopy using a ...
S B, Eiden, J, Cooper, G, Olivares, D, Horn, R, London   +4 more
openaire   +2 more sources