Results 11 to 20 of about 92,260,850 (247)

Optic Disc and Optic Cup Segmentation Methodologies for Glaucoma Image Detection: A Survey

open access: yesJournal of Ophthalmology, 2015
Glaucoma is the second leading cause of loss of vision in the world. Examining the head of optic nerve (cup-to-disc ratio) is very important for diagnosing glaucoma and for patient monitoring after diagnosis.
Ahmed Almazroa   +3 more
doaj   +2 more sources

Identifying the Edges of the Optic Cup and the Optic Disc in Glaucoma Patients by Segmentation

open access: yesSensors, 2023
With recent advancements in artificial intelligence, fundus diseases can be classified automatically for early diagnosis, and this is an interest of many researchers. The study aims to detect the edges of the optic cup and the optic disc of fundus images
Srikanth Tadisetty   +4 more
doaj   +2 more sources

A Study To Evaluate Skills Of Ophthalmic Assistants For Assessment Of Cup Disc Ratio

open access: yesIndian Journal of Community Medicine, 1999
Research question: 1. Whether paramedical ophthalmic assistants can be trained to examine vertical cup disc ratio? 2. Can the PMO As detect abnormal cup disc ratio after training? Objectives: 1.
Malik J.S
doaj   +1 more source

Utility of multicolor optic disc photography in evaluation of glaucomatous optic disc in myopic eyes: A novel approach

open access: yesIndian Journal of Ophthalmology, 2019
Interpretation of optic disc cupping and neuroretinal rim is challenging in myopic eyes because of large, shallow, and tilted disc, myopic crescent, and macular degeneration.
Tamonash Basu   +5 more
doaj   +2 more sources

Segmentation of the Optic Disc and Optic Cup Using Histogram Feature-Based Adaptive Threshold for Cup to Disk Ratio

open access: yesMATEC Web of Conferences, 2016
Glaucoma is a condition of increased intraocular pressure within the eyes. Such increase then causes the damage on optic nerves as the organ bringing information to be processed in brain.
Nugraha Gibran Satya, Soesanti Indah
doaj   +2 more sources

Rim-to-Disc Ratio Outperforms Cup-to-Disc Ratio for Glaucoma Prescreening. [PDF]

open access: yesSci Rep, 2019
We present a novel and fully automated fundus image processing technique for glaucoma prescreening based on the rim-to-disc ratio (RDR). The technique accurately segments the optic disc and optic cup and then computes the RDR based on which it is ...
Kumar JRH   +3 more
europepmc   +2 more sources

Comparison of vertical cup-disc ratio and disc damage likelihood scale with respect to visual field global indices in primary open-angle glaucoma patients: A cross-sectional study

open access: yesKerala Journal of Ophthalmology, 2017
Background: In primary open-angle glaucoma (POAG), structural changes in optic nerve head precede functional changes in visual field (VF). Hence, it is important to detect glaucoma early as well as to monitor changes in glaucomatous damage. Aims: The aim
Smita Narayan, Reshmi Sreekumari
doaj   +2 more sources

Automated cup-to-disc ratio quantification via color fundus photography for chronic glaucoma screening. [PDF]

open access: yesBMC Med Imaging
Purpose Glaucoma is a leading cause of irreversible blindness, and accurate cup-to-disc ratio (CDR) measurement is essential for early detection. This study presents an enhanced deep learning–based system for automated CDR estimation and glaucoma ...
Lv X   +5 more
europepmc   +2 more sources

Retinal nerve fiber layer defects in the presence of a physiological cup to disc ratio — a case series [PDF]

open access: yes, 2021
Retinal nerve fiber layer (RNFL) defects are one of the earliest signs of glaucoma. Typically, these RNFL defects are associated with an increased cup/disc ratio and a thinning of the neuroretinal rim. When the cup/disc ratio is within normal limits, the
Muñoz, Edgar; UT Health San Antonio, San Antonio, United States; Collective Innovations Colombia, Cali, Colombia   +7 more
core   +1 more source

Comparison of 3MSE scores by large cup-to-disc ratio.

open access: yes, 2022
Comparison of 3MSE scores by large cup-to-disc ratio.
Joelle A. Hallak (7927457)   +11 more
core   +1 more source

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