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https://www.readbyqxmd.com/read/29049405/differences-in-pupillary-light-reflex-between-optic-neuritis-and-ischemic-optic-neuropathy
#1
Yung Ju Yoo, Jeong-Min Hwang, Hee Kyung Yang
OBJECTIVES: To determine the differences in pupillary light reflex (PLR) between the acute and chronic phases of optic neuritis (ON) and nonarteritic anterior ischemic optic neuropathy (NAION). METHODS: The study included 30 patients with ON and 22 patients with NAION whose PLR were measured by a dynamic pupillometer (PLR-200; NeurOptics Inc., Irvine, USA). Age-matched controls included 58 healthy individuals with normal vision and optic nerve function. Pupil diameters, latency, constriction ratio, constriction velocity and dilation velocity were noted...
2017: PloS One
https://www.readbyqxmd.com/read/29033621/nonarteritic-anterior-ischemic-optic-neuropathy-cause-effect-and-management
#2
REVIEW
Shauna Berry, Weijie V Lin, Ama Sadaka, Andrew G Lee
Nonarteritic anterior ischemic optic neuropathy (NAION) is the most common form of ischemic optic neuropathy and the second most common optic neuropathy. Patients are generally over the age of 50 years with vasculopathic risk factors (eg, diabetes mellitus, hypertension, and obstructive sleep apnea). The exact mechanism of NAION is not fully understood. In addition, several treatment options have been proposed. This article summarizes the current literature on the diagnosis, treatment, and management of NAION...
2017: Eye and Brain
https://www.readbyqxmd.com/read/28986994/microvasculature-dropout-detected-by-the-optical-coherence-tomography-angiography-in-nonarteritic-anterior-ischemic-optic-neuropathy
#3
Yi Song, Jing-Yu Min, Lei Mao, Yuan-Yuan Gong
OBJECTIVE: To investigate microcirculation characteristics of peripapillary superficial retina and optic disc in eyes with nonarteritic anterior ischemic optic neuropathy (NAION) using optical coherence tomography angiography (OCTA). METHODS: Forty-one eyes of 30 NAION patients and 30 eyes of 30 normal subjects were evaluated with OCTA (AngioVue, Optovue). The whole vessel density, inside disc vessel density, peripapillary vessel density, and vessel densities based on the sectorial division in the nerve head mode peripapillary superficial retina and RPC mode optic disc were measured respectively...
October 7, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28972024/prevalence-and-incidence-of-non-arteritic-anterior-ischaemic-optic-neuropathy-in-south-korea-a-nationwide-population-based-study
#4
Ju-Yeun Lee, Kyung-Ah Park, Sei Yeul Oh
AIMS: To determine the age and sex-specific prevalence and incidence of non-arteritic anterior ischaemic optic neuropathy (NAION) in South Korea. METHODS: This is a nationwide population-based study using data from the Korean national health claims database to identify patients with NAION using the registration programme database, which comprises ophthalmologist-confirmed NAION from 2011 through 2015. We evaluated prevalence and incidence rates using these data...
September 28, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28944200/optical-coherence-tomography-angiography-of-optic-disc-perfusion-in-non-arteritic-anterior-ischemic-optic-neuropathy
#5
Jia-Wen Ling, Xue Yin, Qian-Yi Lu, Yi-Yi Chen, Pei-Rong Lu
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, 12 individuals) were detected via Optovue optical coherence tomography angiography (OCTA). The optic disc blood flow was measured via Image J software. Correlations between optic disc perfusion and visual function variables were assessed by linear regression analysis...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28885450/automated-evaluation-of-choroidal-thickness-and-minimum-rim-width-thickness-in-nonarteritic-anterior-ischemic-optic-neuropathy
#6
Ane Pérez-Sarriegui, Francisco J Muñoz-Negrete, Susana Noval, Victoria De Juan, Gema Rebolleda
BACKGROUND: The aim of this study was to evaluate and compare peripapillary choroidal thickness (pCT) and macular choroidal thickness (CT), Bruch membrane opening-minimum rim width (BMO-MRW), retinal nerve fiber layer (RNFL) thickness, and optic disc area among nonarteritic anterior ischemic optic neuropathy (NAION) eyes, the contralateral unaffected eyes, and healthy control eyes. METHODS: Twenty-six patients diagnosed with NAION (29 affected and 21 unaffected eyes) and 29 healthy matched control individuals (29 eyes) were analyzed by swept-source optical coherence tomography...
September 6, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28846776/nonarteritic-anterior-ischemic-optic-neuropathy-induced-retinal-folds-and-deformations
#7
Mark J Kupersmith, Patrick A Sibony, Sarita Dave
Purpose: We hypothesized that the edema/swelling in the retina due to acute nonarteritic anterior ischemic optic neuropathy (NAION) can induce retinal folds (RF). We determined the pattern and frequency of folds in NAION at presentation and in follow-up, and the relationship between folds and a number of functional and structural parameters over time. Methods: We prospectively studied eyes with acute NAION by spectral-domain optic coherence tomography (SD-OCT). We used transaxial and en face views to evaluate the presence of peripapillary fluid (PPF), peripapillary wrinkles (PPW), RF, choroidal folds (CF), creases, macular edema, and vitreous traction on the optic disc...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28836961/visual-outcome-following-bilateral-non-arteritic-anterior-ischemic-optic-neuropathy-a-systematic-review-and-meta-analysis
#8
Shay Keren, Mario Zanolli, Gad Dotan
BACKGROUND: Many patients who suffer unilateral non-arteritic anterior ischemic optic neuropathy (NAION) will eventually develop the same condition in their other eye, worrying them about losing vision in both eyes. The purpose of this meta-analysis is to determine whether it is possible to predict the visual outcome of the consecutive NAION event based on initial presentation and to compare mean visual loss of firstly versus secondly affected eyes. METHODS: A systematic review and meta-analysis of studies published between January 1st 1966 and May 31st 2016 reporting on visual acuity and/or visual field loss of both affected eyes, measured either at presentation or follow-up following bilateral NAION...
August 24, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28810284/-development-of-non-arteritic-anterior-ischaemic-optic-neuropathy-in-the-initially-unaffected-fellow-eye-in-patients-treated-with-systemic-corticosteroids
#9
Artur Pahor, Dusica Pahor
Background The objective of this prospective pilot study was to evaluate the results of systemic corticosteroid therapy in patient with non-arteritic anterior ischaemic neuropathy of the optical nerve (NAION) for an observation period of one year and to measure the NAION incidence in the initially healthy contralateral eye of these patients. Patients and Methods All patients diagnosed with acute NAION who were admitted to our ward during 2014 and who fulfilled all inclusion criteria for systemic corticosteroid therapy were included in the study...
August 15, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28771491/atrial-fibrillation-in-retinal-vascular-occlusion-disease-and-non-arteritic-anterior-ischemic-optic-neuropathy
#10
Josep Callizo, Nicolas Feltgen, Antje Ammermann, Janina Ganser, Sebastian Bemme, Thomas Bertelmann, Sebastian Pfeiffer, Andre Duvinage, Klaus Gröschel, Hans Hoerauf, Rolf Wachter
BACKGROUND: Patients with retinal vascular occlusion disease have an increased risk for ischemic stroke and share some risk factors with cerebrovascular disease. The purpose of this study was to analyze the prevalence of atrial fibrillation (AF) in subjects with retinal vascular occlusive disease and anterior ischemic optic neuropathy and to compare these data to an ischemic stroke group. METHODS: Prospective, observational single-center trial. Subjects with retinal artery occlusion (RAO), retinal vein occlusion (RVO) and anterior ischemic optic neuropathy (AION) were included...
2017: PloS One
https://www.readbyqxmd.com/read/28733725/carotid-artery-intimal-medial-thickness-and-carotid-artery-plaques-in-hypertensive-patients-with-non-arteritic-anterior-ischaemic-optic-neuropathy
#11
Wenhui Zhu, Tingting Chen, Ling Jin, Haoyu Wang, Fengjuan Yao, Congyao Wang, Qi Wang, Nathan Congdon
PURPOSE: To assess the correlation of carotid artery intimal medial thickness (C-IMT) and carotid artery plaque score (CPS) of the common carotid artery with non-arteritic anterior ischemic optic neuropathy (NAION) in hypertensive patients. METHODS: This case-control study recruited 192 subjects. Forty-eight patients had NAION with systemic hypertension, 46 had hypertension without visual complaints, and 98 were normal controls. C-IMT and common carotid arterial plaque were measured by high-resolution vascular ultrasonography...
July 22, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28716667/pupillometric-evaluation-of-the-melanopsin-containing-retinal-ganglion-cells-in-mitochondrial-and-non-mitochondrial-optic-neuropathies
#12
Shakoor Ba-Ali, Henrik Lund-Andersen
In recent years, chromatic pupillometry is used in humans to evaluate the activity of melanopsin expressing intrinsic photosensitive retinal ganglion cells (ipRGCs). Blue light is used to stimulate the ipRGCs and red light activates the rod/cone photoreceptors. The late re-dilation phase of pupillary light reflex is primarily driven by the ipRGCs. Optic neuropathies i.e. Leber hereditary optic neuropathy (LHON), autosomal dominant optic atrophy (ADOA), nonarteritic anterior ischemic optic neuropathy (NAION), glaucoma, optic neuritis and idiopathic intracranial hypertension (IIH) are among the diseases, which have been subject to pupillometric studies...
July 14, 2017: Mitochondrion
https://www.readbyqxmd.com/read/28687846/comparison-of-the-retinal-microvascular-density-between-open-angle-glaucoma-and-nonarteritic-anterior-ischemic-optic-neuropathy
#13
Chun-Hsiu Liu, Wei-Chi Wu, Ming-Hui Sun, Ling-Yuh Kao, Yung-Sung Lee, Henry Shen-Lih Chen
Purpose: To compare optical coherence tomography angiography (OCT-A) retinal vasculature measurements between nonarteritic anterior ischemic optic neuropathy (NAION) and open angle glaucoma (OAG) with altitudinal hemifield visual field defects. Methods: This retrospective cross-sectional study included 10 NAION eyes and 16 OAG eyes, both demonstrating hemifield visual field defects, and 27 normal eyes serving as controls. The peripapillary and macular OCT-A scans were acquired...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632028/the-effect-of-combined-systemic-erythropoietin-and-steroid-on-non-arteritic-anterior-ischemic-optic-neuropathy-a-prospective-study
#14
Mohammad Pakravan, Hamed Esfandiari, Kiana Hassanpour, Sarvnaz Razavi, Parastou Pakravan
BACKGROUND: To investigate the effect of combined intravenous (IV) erythropoietin (EPO) and corticosteroid as well as systemic steroid alone for the treatment of non-arteritic anterior ischemic optic neuropathy (NAION). METHODS: In this prospective interventional comparative case series, 113 consecutive patients diagnosed with recent onset (less than 14 days) NAION were included. Patients were categorized into three groups. 40 patients received systemic IV corticosteroid combined with recombinant human erythropoietin (rhEPO) (group 1), 43 patients received systemic corticosteroid alone (group 2), and 30 patients were enrolled as the control group (group 3)...
July 2017: Current Eye Research
https://www.readbyqxmd.com/read/28586576/non-arteritic-anterior-ischemic-optic-neuropathy-does-anticoagulation-help
#15
Akhunzada Muhammad Aftab, Mustafa Iqbal, Awais Rauf, Asif Ali
BACKGROUND: Non Arteritic Anterior Ischemic Optic Neuropathy (NAION) is the most common acute optic neuropathy in patients over 50 years of age. This study was conducted to determine the beneficial effects of anticoagulation with Heparin and Warfarin in patients with NAION presenting within 4 weeks of onset of symptoms. METHODS: A prospective, interventional, pilot study was conducted in Eye- A unit of Khyber Teaching Hospital from July 2010 onwards on patients with NAION presenting within 4 weeks of onset of symptoms...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28538035/structure-function-analysis-of-nonarteritic-anterior-ischemic-optic-neuropathy-and-age-related-differences-in-outcome
#16
Ming-Hui Sun, Yaping Joyce Liao
BACKGROUND: The optic nerve head is vulnerable to ischemia leading to anterior ischemic optic neuropathy (AION), the most common acute optic neuropathy in those older than 50 years of age. METHODS: We performed a cross-sectional study of 55 nonarteritic anterior ischemic optic neuropathy (NAION) eyes in 34 patients to assess clinical outcome and perform structure-function correlations. RESULTS: The peak age of NAION onset was between 50 and 55 years...
September 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28527029/critical-flicker-fusion-frequency-in-demyelinating-and-ischemic-optic-neuropathies
#17
Matthew T Young, Puneet S Braich, Scott R Haines
PURPOSE: Critical flicker fusion (CFF) frequency is a well-studied test for evaluating demyelinating optic neuritis (ON). Its use in evaluating other optic neuropathies is not well established. The purpose of this study was to compare CFF in ON and non-arteritic anterior ischemic optic neuropathy (NAION). METHODS: We performed a retrospective review to compare multiple variables for eyes with ON or NAION using two-sided T tests and Chi-square tests. A multivariate linear regression was performed for the dependent variable CFF...
May 19, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28513892/assessment-of-nonarteritic-anterior-ischemic-optic-neuropathy-with-intravoxel-incoherent-motion-diffusion-weighted-imaging-using-readout-segmented-echo-planar-imaging-parallel-imaging-and-2d-navigator-based-reacquisition
#18
Ping Lu, Yan Sha, Hailin Wan, Feng Wang, Guohong Tan, Wenlin Tang
PURPOSE: To determine the feasibility of intravoxel incoherent motion (IVIM) for characterizing perfusion properties and its potential diagnostic utility for nonarteritic anterior ischemic optic neuropathy (NAION). IVIM diffusion-weighted imaging is a promising technique that can measure perfusion and diffusion characteristics simultaneously in a noninvasive manner. MATERIALS AND METHODS: Orbital IVIM in a 3.0T scanner was performed on 33 patients with NAION and 15 controls using readout-segmented echo-planar imaging, parallel imaging, and 2D navigator-based reacquisition (RESOLVE-IVIM)...
May 17, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28431627/sequential-naion-presenting-as-pseudo-foster-kennedy-syndrome
#19
Anuja Patil, Aastha Takkar, Manoj Goyal, Ramandeep Singh, Vivek Lal
PURPOSE: To review recurrent NAION as a cause for PFK syndrome. METHODS: In an observational study patients presenting with sudden loss of vision were evaluated. We reviewed patients presenting with disc edema on one side and optic atrophy in contralateral eye on fundus examination. Their visual field defects and fundus fluorescein angiography was assessed. RESULTS: Of the 7 patients evaluated 4 (57.1%) were females. Mean age at presentation was 53...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28427356/postural-effects-on-intraocular-pressure-and-ocular-perfusion-pressure-in-patients-with-non-arteritic-anterior-ischemic-optic-neuropathy
#20
Jee Myung Yang, Sang Woo Park, Yong Sok Ji, Jaeryung Kim, Chungkwon Yoo, Hwan Heo
BACKGROUND: To investigate postural effects on intraocular pressure (IOP) and ocular perfusion pressure (OPP) in patients with non-arteritic ischemic optic neuropathy (NAION). METHODS: IOP and blood pressure (BP) were measured in 20 patients with unilateral NAION 10 min after changing to each of the following positions sequentially: sitting, supine, right lateral decubitus position (LDP), supine, left LDP, and supine. IOP was measured using a rebound tonometer and OPP was calculated using formulas based on mean BP...
April 20, 2017: BMC Ophthalmology
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