Results 21 to 30 of about 1,830,086 (308)

Optic nerve aplasia: A case series

open access: yesIndian Journal of Ophthalmology, 2018
Optic nerve aplasia (ONA) is a congenital optic nerve anomaly characterized by the absence of optic nerve head, retinal blood vessels, retinal ganglion cells, and optic nerve fibers in a malformed eye.
K Samyukta Sadasivan   +3 more
doaj   +1 more source

Ischemic optic neuropathies: Current concepts

open access: yesAnnals of Indian Academy of Neurology, 2022
Ischemic optic neuropathy (ION) is the term ascribed to optic nerve disease that is the result of a transient or permanent interruption of the blood supply to any portion of the optic nerve. Anterior ischemic optic neuropathy (AION) refers to ischemia of
Ajay D Patil   +2 more
doaj   +1 more source

Optic Nerve Head and Macular Vascular Density Changes in Different Stage Glaucoma

open access: yes, 2022
Aim:The vascular theory is thought to have an important place in the pathophysiology of glaucoma. In the present study, we aimed to analyze the structural and vascular changes in both eyes of patients with glaucoma at different stages and to investigate ...
Turker Oba   +3 more
core   +1 more source

Anterior ischemic optic neuropathy in association with optic nervehead drusen

open access: yesIndian Journal of Ophthalmology, 2014
Optic nerve head drusen (ONHD) are incidental ophthalmologic finding in the optic nerve. Patients with ONHD are often asymptomatic, but sometimes present with transient visual obscuration′s (TVO), the reported incidence of which is 8.6%. Optic nerve head
Bharathi Megur   +3 more
doaj   +1 more source

Optic nerve head microvascular differences in ambliopic eyes- an observational case-control study

open access: yesMedicine Science, 2021
We aimed to assign optic nerve head microvascular variations in amblyopic eyes and compare them with healthy eyes. We designed this study as an observational case-control study.
Mujdat Karabulut   +3 more
doaj   +1 more source

Optic nerve head cupping in a preterm infant revealing congenital hypothyroidism

open access: yesIndian Journal of Ophthalmology. Case Reports, 2022
We report a case of a male preterm infant with gestational age of 35 weeks evaluated for retinopathy of prematurity. On examination, the infant showed bilateral advanced optic nerve cupping head with cup disc ratio of 0.9. With a suspicion of optic nerve
Abhinav Dhami   +5 more
doaj   +1 more source

Head and neck: Optic Nerve Glioma [PDF]

open access: yes, 2009
Review on Head and neck: Optic Nerve Glioma, with data on clinics, and the genes ...
Walker, ML, Niazi, T
core   +1 more source

Trabeculectomy and optic nerve head topography [PDF]

open access: yesBrazilian Journal of Medical and Biological Research, 2006
The objective of the present study was to evaluate changes in optic nerve head parameters, measured by confocal laser tomography, before and after trabeculectomy in order to identify outcome measures for the management of glaucoma. The optic nerve head of 22 eyes (22 patients) was analyzed by confocal laser tomography with the Heidelberg retinal ...
Paranhos Jr., A.   +4 more
openaire   +5 more sources

Altered expression of 3α-hydroxysteroid dehydrogenases in human glaucomatous optic nerve head astrocytes

open access: yesNeurobiology of Disease, 2003
3α-Hydroxysteroid dehydrogenase (3α-HSD) isoforms (AKR1C1–AKR1C4) are aldo-keto reductases that metabolize steroids and other substances in many tissues including the CNS.
O.A Agapova   +6 more
doaj   +1 more source

Optic Nerve Head Drusen: An Update [PDF]

open access: yesNeuro-Ophthalmology, 2018
Optic nerve head drusen are benign acellular calcium concretions that usually form early in life, just anterior to the lamina cribrosa. Improving imaging using optical coherence tomography suggests they are common and may be present in many clinically normal discs.
Edward Palmer   +3 more
openaire   +2 more sources

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