Results 11 to 20 of about 119,281 (288)

A True Double Optic Disc [PDF]

open access: yesCase Reports in Ophthalmological Medicine
A true double optic disc with two separate vasculatures is an extremely rare condition. The division of the optic nerve into two distinct fascicles is presumed to occur during early stages of embryonic development.
Mesut Tekerek, Nur Demir
doaj   +2 more sources

Optic disc melanocytoma with disc oedema and juxtapapillary haemorrhage: a case report [PDF]

open access: yesBMC Ophthalmology
Background Optic disc melanocytoma is a benign, pigmented tumour of the optic nerve head that is generally stable and asymptomatic. However, in rare cases, these tumours may be complicated by vascular changes and optic disc oedema, mimicking malignant ...
Shuang Liang   +4 more
doaj   +2 more sources

The Effect of Optic Disc Center Displacement on Retinal Nerve Fiber Layer Measurement Determined by Spectral Domain Optical Coherence Tomography. [PDF]

open access: yesPLoS ONE, 2016
To investigate the effect of optic disc center displacement on retinal nerve fiber layer (RNFL) measurement determined by spectral domain optical coherence tomography (SD-OCT).The optic disc center was manipulated at 1-pixel intervals in horizontal ...
Joong Won Shin   +6 more
doaj   +6 more sources

Optical Coherence Tomography Angiography of Optic Disc Perfusion in Glaucoma [PDF]

open access: yesOphthalmology, 2014
Purpose To compare optic disc perfusion between normal subjects and subjects with glaucoma using optical coherence tomography (OCT) angiography and to detect optic disc perfusion changes in glaucoma.
Armour, Rebecca L.   +12 more
core   +3 more sources

Morphometric parameters of the optic disc and peripapillary retina in children in cases of congenital pathology

open access: yesРоссийский офтальмологический журнал, 2022
Purpose: to study the nature of changes in morphological parameters of the children’s optic disc and peripapillary retina in cases of congenital pathology.Material and methods.
T. V. Sudovskaya, L. V. Kogoleva
doaj   +1 more source

Radial peripapillary capillary network in optic disc anomalies with abnormal tissues on disc surface

open access: yesIndian Journal of Ophthalmology, 2023
Background: Optic disc anomalies with abnormal tissue on the disc surface includes, myelinated nerve fiber, optic disc drusen, and Bergmeister papillae.
Tarannum Mansoori
doaj   +1 more source

Optical Coherence Tomography Angiography of the Optic Disc; an Overview. [PDF]

open access: yes, 2017
Different diseases of the optic disc may be caused by or lead to abnormal vasculature at the optic nerve head. Optical coherence tomography angiography (OCTA) is a novel technology that provides high resolution mapping of the retinal and optic disc ...
Akil, Handan   +3 more
core   +7 more sources

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

A mathematical model for describing the retinal nerve fiber bundle trajectories in the human eye:Average course, variability, and influence of refraction, optic disc size and optic disc position [PDF]

open access: yes, 2012
Previously we developed a mathematical model for describing the retinal nerve fiber bundle trajectories in the superior-temporal and inferior-temporal regions of the human retina, based on traced trajectories extracted from fundus photographs.
Jansonius, Nomdo M.   +4 more
core   +8 more sources

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

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