Results 11 to 20 of about 125,571 (334)

Characteristics of the optic disc in young people with high myopia

open access: yesBMC Ophthalmology, 2022
Purpose This study aimed to investigate the characteristics of the optic disc in adolescents and young adults with high myopia by applying optical coherence tomography angiography.
Fen Zhang   +6 more
doaj   +1 more source

Optical coherence tomography angiography of optic disc perfusion in non-arteritic anterior ischemic optic neuropathy [PDF]

open access: yesInternational Journal of Ophthalmology, 2017
AIM: To compare the optic disc blood flow of non-arteritic ischemic optic neuropathy (NAION) eyes with normal eyes. METHODS: The optic disc blood flow densities of diagnosed non-acute phase NAION eyes (21 eyes, 14 individuals) and normal eyes (19 eyes ...
Jia-Wen Ling   +4 more
doaj   +1 more source

Glaucoma detection of retinal images based on boundary segmentation [PDF]

open access: yes, 2020
The rapid growth of technology makes it possible to implement in immediate diagnosis for patients using image processing. By using morphological processing and adaptive thresholding method for segmentation of optic disc and optic cup, various sizes of ...
Mustafa, Mohd Marzuki   +5 more
core   +3 more sources

Optic Disc Abnormalities – Diagnosis, Evolution and Influence on Visual Acuity

open access: yesBiomolecules & Biomedicine, 2010
Congenital abnormalities of the optic disc are not so rare. The etiology for the most of them is unknown. Visual acuity of affected eye may be minimally or severely affected, depending on the extent of lesion. All of these conditions can be unilateral or
Sonja Cekić   +4 more
doaj   +1 more source

The relation between the thickness of retrobulbar part of the optic nerve, measured by ultrasound, and the degree of prominence of the optic disc in stasis of the optic nerve [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2006
Introduction: The etiology of the noninflamed edema of the optic disc, or the stasis of the same, is related to a large number of various illnesses which result in the increased intracranial pressure.
Stefanović Ivan   +2 more
doaj   +1 more source

Age effect on retina and optic disc normal values [PDF]

open access: yes, 2005
Purpose: To investigate retinal thickness and optic disc parameters by the Retinal Thickness Analyzer (RTA) glaucoma program in older normal subjects and to determine any age effect.
Aljoscha S. Neubauer   +24 more
core   +1 more source

Familial Disorders of the Optic Disc: Presentation of a Mother and Daughter and Review of the Literature

open access: yesCase Reports in Ophthalmology, 2015
Optic disc pit and optic nerve coloboma are examples of congenital optic disc abnormalities. Although optic nerve coloboma can be inherited in an autosomal dominant fashion, no conclusive link has been found in the case of optic disc pit as an autosomal ...
Chia Lee Hsu, Christopher J. Layton
doaj   +1 more source

Localization and segmentation of optic disc in retinal images using circular Hough transform and grow-cut algorithm [PDF]

open access: yes, 2016
Automated retinal image analysis has been emerging as an important diagnostic tool for early detection of eye-related diseases such as glaucoma and diabetic retinopathy.
Abdullah   +49 more
core   +2 more sources

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   +1 more source

Pseudoduplication of the optic disc initially resembling a bifurcated optic nerve in a strabismus child: a case report

open access: yesBMC Ophthalmology, 2020
Background Pseudoduplication of the optic disc is a rare clinical condition that is characterized by a circumscribed, disc-like lesion with radiating vessels but only one normal optic nerve.
Liuhui Huang   +3 more
doaj   +1 more source

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