Results 31 to 40 of about 1,202,649 (281)

Statistical Edge Detection and Circular Hough Transform for Optic Disk Localization

open access: yesApplied Sciences, 2019
Accurate and efficient localization of the optic disk (OD) in retinal images is an essential process for the diagnosis of retinal diseases, such as diabetic retinopathy, papilledema, and glaucoma, in automatic retinal analysis systems.
H. Ünver   +3 more
semanticscholar   +1 more source

Terahertz single pixel imaging based on a Nipkow disk [PDF]

open access: yes, 2012
We describe a terahertz single pixel imaging system based on a Nipkow disk. Nipkow disks have been used for fast scanning imaging systems since the first experimental television was invented in 1926.
Saha, S., Cumming, D., Ma, Y., Grant, J.
core   +1 more source

Malignant Hypertension: Ocular Manifestations

open access: yesThe Scientific World Journal, 2006
Malignant hypertension may be the first manifestation of systemic hypertension. We report a clinical case of a Caucasian 41-year-old man with no previous history of blood hypertension seen at casualty because of blurred vision.
Silvia Muñoz   +2 more
doaj   +1 more source

Optic Nerve Sonography in the Diagnostic Evaluation of Pseudopapilledema and Raised Intracranial Pressure: A Cross-Sectional Study

open access: yesNeurology Research International, 2015
Introduction. Differentiating pseudopapilledema from papilledema which is optic disk edema and a result of increased ICP (intracranial pressure) is important and can be done with noninvasive methods like orbital ultrasound examination. Method. This was a
Masoud Mehrpour   +4 more
doaj   +1 more source

Change in optic nerve head cup-to-disk ratio (ΔONH), in prespecified subgroups.

open access: yes, 2023
Change in optic nerve head cup-to-disk ratio (ΔONH), in prespecified subgroups.
Kavitha Srinivasan (16624476)   +4 more
core   +1 more source

The Automated Expert Support System for Optic Nerve Head Morphological Description

open access: yesOftalʹmologiâ, 2020
Purpose. To develop the automated expert support system for optic nerve head morphological description in normal conditions and in pathology.Methods. The proposed expert support system is based on the integration algorithm of luminance samples along the ...
E. G. Tanaeva, R. G. Khafizov
doaj   +1 more source

Baseline optic nerve head cup-to-disk ratio (ONH) level, in prespecified subgroups.

open access: yes, 2023
Baseline optic nerve head cup-to-disk ratio (ONH) level, in prespecified subgroups.
Kavitha Srinivasan (16624476)   +4 more
core   +1 more source

Change in optic nerve head cup-to-disk ratio (ΔONH), in prespecified subgroups with controls.

open access: yes, 2023
Change in optic nerve head cup-to-disk ratio (ΔONH), in prespecified subgroups with controls.
Kavitha Srinivasan (16624476)   +4 more
core   +1 more source

Prognostic value of myopic disk deformation in myopic choroidal neovascularization: A 6-year follow-up study

open access: yesFrontiers in Medicine, 2022
PurposeTo evaluate the clinical characteristics of myopic choroidal neovascularization (mCNV) according to peripapillary atrophy (PPA) and optic disk tilt and to explore whether those myopic disk deformations are associated with the prognosis of mCNV ...
Ye Eun Han   +6 more
doaj   +1 more source

Bilateral acute anterior uveitis and optic nerve edema as a manifestation of coronavirus disease‐2019 (COVID‐19): A case report

open access: yesClinical Case Reports, 2023
Key clinical message Acute anterior uveitis and optic disk edema could be a manifestation of COVID‐19 infection, and healthcare providers should be aware of this possible consequence for in‐time diagnosis and treatment.
Aria Mohamadzadeh, Dena Mohamadzadeh
doaj   +1 more source

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