Results 251 to 260 of about 92,261,605 (285)

Assessment of the Cup-to-Disc ratio method for Glaucoma detection

2020 International SAUPEC/RobMech/PRASA Conference, 2020
Glaucoma is a leading cause of blindness and early detection of glaucoma is very important to its treatment. Several methods are being used to detect glaucoma. One of the common methods used in the detection of glaucoma is the optic cup-to-disc ratio which is commonly called CDR.
Afolabi O. Joshua, Gugulethu Mabuza-Hocquet, Fulufhelo V. Nelwamondo   +2 more
openaire   +1 more source

Lamina Cribrosa Depth is Associated With the Cup-to-Disc Ratio in Eyes With Large Optic Disc Cupping and Cup-to-Disc Ratio Asymmetry

Journal of Glaucoma, 2016
Purpose: To investigate the lamina cribrosa (LC) depth and its relationship with the cup-to-disc ratio (CDR) in the eyes with generalized increased optic disc cupping and CDR asymmetry. Methods: Glaucoma suspect subjects with a CDR≥0.7, CDR asymmetry ≥0.2 in the absence of visual ...
Kyoung In, Jung, Sooji, Jeon, Chan Kee, Park   +2 more
openaire   +2 more sources

A Semiautomatic Superpixel Based Approach to Cup-to-Disc Ratio Measurement

2018 IEEE Symposium on Computers and Communications (ISCC), 2018
Glaucoma is a disease that affects the optic nerve, making it difficult to transmit impulses from the retina to the brain. This failure is caused by increased intraocular pressure and can lead to blindness. Early detection is the best alternative to mitigate the effects of glaucoma since the disease has no cure.
Elineide Silva Dos Santos, Luís Santos, Rodrigo Veras, Marcos Frazão, Daniel Leite   +4 more
openaire   +2 more sources

Automatic Measurement of Cup-to-Disc Ratio for Retinal Images

2018
Glaucoma is a chronic eye disease which results in irreversible vision loss, and the optic cup-to-disc ratio (CDR) is an essential clinical indicator in diagnosing glaucoma, which means precise optic disc (OD) and optic cup (OC) segmentation become an important task. In this paper, we propose an automatic CDR measurement method.
Xin Zhao, Fan Guo 0001, Beiji Zou 0001, Xiyao Liu 0001, Rongchang Zhao   +4 more
openaire   +2 more sources

Measurement of optical cup-to-disc ratio in fundus images for glaucoma screening

2015 International Workshop on Computational Intelligence for Multimedia Understanding (IWCIM), 2015
Glaucoma is the second leading cause of blindness. There is no cure for glaucoma yet and early detection is critical to avoid total loss of vision. Cup to disc ratio (CDR) is commonly used by ophthalmologists to diagnose glaucoma. The purpose of this work is to develop an automatic approach to measure the cup to disc ratio (CDR) for glaucoma screening.
Hanan S. Alghamdi, Hongying Lilian Tang, Morten Hansen, Arrianne O'Shea, Lutfiah Al Turk, Tünde Petö   +5 more
openaire   +2 more sources

Vertical cup-to-disc ratio measurement for diagnosis of glaucoma on fundus images

SPIE Proceedings, 2010
Glaucoma is a leading cause of permanent blindness. Retinal fundus image examination is useful for early detection of glaucoma. In order to evaluate the presence of glaucoma, the ophthalmologists determine the cup and disc areas and they diagnose glaucoma using a vertical cup-to-disc ratio. However, determination of the cup area is very difficult, thus
Yuji Hatanaka, Atsushi Noudo, Chisako Muramatsu, Akira Sawada, Takeshi Hara, Tetsuya Yamamoto, Hiroshi Fujita 0001   +6 more
openaire   +2 more sources

Agreement Between Clinicians and an Image Analyzer in Estimating Cup-to-Disc Ratios

Archives of Ophthalmology, 1989
We studied optic disc photographs of 35 eyes to determine the level of agreement between estimates of vertical and horizontal cup-to-disc ratios (CDRs) provided by two clinicians and estimates of these ratios obtained using an image analyzer. We also evaluated the agreement of each clinician with himself and with the other clinician to provide a ...
R, Varma, G L, Spaeth, W C, Steinmann, L J, Katz   +3 more
openaire   +2 more sources

Enhancement of optic cup to disc ratio detection in glaucoma diagnosis

2012 International Conference on Computer Communication and Informatics, 2012
Glaucoma is a major global cause of blindness. An approach to automatically extract the main features in color fundus images is proposed in this paper. The optic cup-to-disc ratio (CDR) in retinal fundus images is one of the principle physiological characteristics in the diagnosis of glaucoma.
A. Murthi, M. Madheswaran
openaire   +1 more source

Automatic Measurement of Vertical Cup-to-Disc Ratio on Retinal Fundus Images

2010
Glaucoma is a leading cause of permanent blindness. Retinal fundus image examination is useful for early detection of glaucoma. In order to evaluate the presence of glaucoma, the ophthalmologist may determine the cup and disc areas and diagnose glaucoma using a vertical cup-to-disc ratio.
Yuji Hatanaka, Atsushi Noudo, Chisako Muramatsu, Akira Sawada, Takeshi Hara, Tetsuya Yamamoto, Hiroshi Fujita 0001   +6 more
openaire   +1 more source

Automatic measurement of cup to disc ratio for diagnosis of glaucoma on retinal fundus images

2013 6th International Conference on Biomedical Engineering and Informatics, 2013
Glaucoma is the second leading cause of blindness in the world. It is estimated that 66.8 million people in the world have glaucoma, with 6.7 million bilaterally blind from this disease. One of the glaucoma symptoms is that the cup enlarges until it occupies most of the disc area. This results in blindness.
Azin Poshtyar, Jamshid Shanbehzadeh, Hamid Ahmadieh   +2 more
openaire   +1 more source