Results 1 to 10 of about 92,260,850 (247)

Longitudinal changes of funduscopic optic disc size, color and cup-to-disc ratio in school children [PDF]

International Journal of Retina and Vitreous
Background To investigate the relationship between changes in the optic disc size and color, cup-to-disc (C/D) ratio, and axial elongation in schoolchildren.
Seiji Sameshima, Takehiro Yamashita, Hiroto Terasaki, Ryo Asaoka, Naoya Yoshihara, Naoko Kakiuchi, Taiji Sakamoto   +6 more
doaj   +3 more sources

Identifying Those at Risk of Glaucoma: A Deep Learning Approach for Optic Disc and Cup Segmentation and Their Boundary Analysis [PDF]

Diagnostics, 2022
Glaucoma is a leading cause of irreversible vision loss that gradually damages the optic nerve. In ophthalmic fundus images, measurements of the cup to optic disc (CD) ratio, CD area ratio, neuroretinal rim to optic disc (RD) area ratio, and rim ...
Tunde Peto, Frederick L. Ferris
exaly   +4 more sources

The effect of photographic light brightness on cup to disc ratio grading [PDF]

BMC Ophthalmology, 2021
Background Digital optic disc photographs are integral to remote telehealth ophthalmology, yet no quality control standards exist for the brightness setting of the images.
Matthew J. McSoley, Eldar Rosenfeld, Alana Grajewski, Ta Chen Chang   +3 more
doaj   +2 more sources

Intraocular Pressure and Cup-to-Disc Ratio Asymmetry in Diagnosing Iris Melanoma [PDF]

Clinical Ophthalmology
Alan W Kong, Adrian Au, Weilin Song, Angela J Oh, Tara A McCannel Department of Ophthalmology, Stein Eye Institute, University of California Los Angeles, Los Angeles, CA, USACorrespondence: Tara A McCannel, Department of Ophthalmology, University of ...
Kong AW, Au A, Song W, Oh AJ, McCannel TA   +4 more
doaj   +2 more sources

Frequency of High Cup to Disc Ratio amongst Healthy Young Population of Central Punjab Province of Pakistan

Pakistan Armed Forces Medical Journal, 2023
Objective: To determine the frequency of high cup-to-disc ratio amongst the healthy young population of the Central Punjab province of Pakistan. Study Design: Cross-sectional study.
Shagufta Parveen, Waqar Muzaffar, Muhammad Kamran Saeed, Zaheer Uddin Babar, Hira Tanveer   +4 more
doaj   +1 more source

Evaluating target intraocular pressures in primary congenital glaucoma

Indian Journal of Ophthalmology, 2021
Purpose: The aim of this study was to evaluate long-term intraocular pressures that provide stabilization/reversal of glaucomatous neuropathy after surgery in primary congenital glaucoma (PCG).
Ramanjit Sihota, Talvir Sidhu, Rinky Agarwal, Ajay Sharma, Amisha Gupta, Anin Sethi, Tanuj Dada, Veena Pandey   +7 more
doaj   +1 more source

Morphological features and important parameters of large optic discs for diagnosing glaucoma. [PDF]

PLoS ONE, 2015
To compare the optic disc parameters of glaucomatous eyes to those of non-glaucomatous eyes with large discs.We studied 225 consecutive eyes with large optic discs (>2.82 mm2): 91 eyes with glaucoma and 134 eyes without glaucoma.
Satoshi Okimoto, Keiko Yamashita, Tetsuo Shibata, Yoshiaki Kiuchi   +3 more
doaj   +1 more source

Relationship between optic nerve head topography and nerve fiber layer thickness with central corneal thickness in patients with primary open-angle glaucoma [PDF]

Srpski Arhiv za Celokupno Lekarstvo, 2020
Introduction/Objective. In patients with primary open-angle glaucoma (POAG) we explored the relationship between the optic nerve head (ONH) topography parameters and the retinal nerve fiber layer (RNFL) thickness with the central corneal thickness (CCT).
Čivčić-Kalinić Nataša, Stamenković Miroslav, Čivčić Nada, Brunet Stefan   +3 more
doaj   +1 more source

Comparison between the measurements of different parameters obtained from optic nerve head analysis by using Heidelberg retinal tomography (HRT3) and Optical coherence tomography (Stratus OCT)

Journal of Clinical Ophthalmology and Research, 2015
Purpose: A cross-sectional prospective nonrandomized study was undertaken to find out whether Heidelberg retinal tomography (HRT3) and Optical coherence tomography (Stratus OCT) could be used interchangeably for the measurement of different parameters of
Mayuri Khamar, Parul Danayak, Chiranjib Majumder   +2 more
doaj   +1 more source

A novel optic disc and optic cup segmentation technique to diagnose glaucoma using deep learning convolutional neural network over retinal fundus images

Journal of King Saud University: Computer and Information Sciences, 2022
Glaucoma is currently leading retinal disease, which damages the eye because of the Intraocular pressure (IOP) on the eye. If glaucoma is left untreated it will lead to vision loss by damaging the Optic Nerve Head (ONH).
H.N. Veena, A. Muruganandham, T. Senthil Kumaran   +2 more
doaj   +1 more source