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Ultrasound in ophthalmology

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https://www.readbyqxmd.com/read/28515637/ultrasound-biomicroscopy-value-in-evaluation-of-restoration-of-ciliary-muscles-contractility-after-cataract-extraction
#1
Ayser Abd El-Hameed Fayed
PURPOSE: To assess the changes in the contractility of the ciliary muscle in eyes with presbyopia before and after phacoemulsification and intracapsular lens implantation using ultrasound biomicroscopy (UBM). PATIENTS AND METHODS: This prospective study included 50 eyes of 30 consecutive subjects operated at the Department of Ophthalmology. Patients with any ocular disorder affecting visual acuity, corneal surface irregularities, had posterior capsular perforation or intensive postoperative corneal edema, or were <35 years of age, were excluded...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28493087/ciliary-body-thickness-changes-after-preoperative-anti-inflammatory-treatment-in-rhegmatogenous-retinal-detachment-complicated-by-choroidal-detachment
#2
Yassine Alibet, Galyna Levytska, Nicolay Umanets, Natalya Pasyechnikova, Paul B Henrich
BACKGROUND: The literature is scant on the state of the ciliary body, its role in the development of rhegmatogenous retinal detachment (RRD) complicated by choroidal detachment (CD), and on ciliary body changes following the treatment aimed at resolving concomitant inflammation and choroidal attachment. This study assesses the anatomical position and thickness of the ciliary body and investigates the ciliary body changes after anti-inflammatory pre-vitrectomy treatment in RRD complicated by CD...
May 10, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28488075/effects-of-phacoemulsification-with-versus-without-viscoelastic-devices-on-surgical-outcomes
#3
İbrahim Taşkın, Lokman Aslan
PURPOSE: The aim of this study is to report surgical outcomes in patients undergoing phacoemulsification surgery (PE) with versus without ophthalmic viscosurgical devices (OVDs). METHODS: This is a comparative case series study. In total, 145 patients who performed PE with OVDs in 68 eyes (Group 1) and without OVD in 77 eyes (Group 2) were enrolled. A comprehensive ophthalmological examination was performed including slit-lamp, fundus examination. Best-corrected visual acuity (BCVA), intraocular pressure (IOP) specular endothelial microscopy (SM), and ultrasound pachymetry (UP) were also measured before surgery and at four-time points postoperatively...
May 9, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28487752/brachytherapy-and-anterior-segment-imaging-in-iris-melanoma
#4
Jin Soo Andy Song, Adam A Dmytriw, Hesham Lakosha
A 40-year-old male presented to the ophthalmology clinic with a darkly pigmented infratemporal lesion in his right eye. The corrected visual acuity in both eyes was 6/6 and both pupils were equal and reactive. Slit lamp biomicroscopy showed a well-demarcated and heavily pigmented lesion in the peripheral iris between 6 and 8 o'clock. Ultrasound biomicroscopy (UBM) revealed a solid mass deriving from the iris stroma without ciliary body involvement, helping to classify the uveal melanoma and establishing the diagnosis of iris melanoma...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28466105/-headache-in-the-emergency-department
#5
REVIEW
C J Schankin, A Straube, C L Bassetti, U Fischer
Headache is one of the most frequent symptoms leading to visits at the emergency department. Here, we aim at presenting a pragmatic algorithm for headache patients at the emergency department. The basic principle is taking a detailed history of the current headache with a focus on dynamics, phenotype and trigger factors as well as a possible preexisting headache. "Red flags" should be interrogated specifically. Hypotheses of the etiology of the headache should be generated in combination with the clinical examination (vital signs, neurological exam, otorhinolaryngological and ophthalmological exams) and should be tested appropriately with imaging, laboratory, cerebral spinal fluid studies and ultrasound...
May 2, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28440860/doppler-ultrasonographic-measurement-of-short-term-effects-of-valsalva-maneuver-on-retrobulbar-blood-flow
#6
Sabit Kimyon, Ahmet Mete, Alper Mete, Duçem Mete
BACKGROUND: To investigate the effects of Valsalva maneuver (VM) on retrobulbar blood flow parameters in healthy subjects. METHODS: Participants without any ophthalmologic or systemic pathology were examined in supine position with color and pulsed Doppler imaging for blood flow measurement, via a paraocular approach, in the ophthalmic artery (OA), central retinal artery (CRA), central retinal vein (CRV), nasal posterior ciliary artery (NPCA), and temporal posterior ciliary artery (TPCA), 10 seconds after a 35- to 40-mm Hg expiratory pressure was reached...
April 25, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28399067/role-of-the-corneal-epithelium-measurements-in-keratorefractive-surgery
#7
Marcella Q Salomão, Ana Luisa Hofling-Lima, Bernardo T Lopes, Ana Laura C Canedo, Daniel G Dawson, Rui Carneiro-Freitas, Renato Ambrósio
PURPOSE OF REVIEW: Refractive surgery has stimulated considerable progress in corneal and anterior segment imaging, and optical characterization of the eye. From front surface corneal topography, we evolved to three-dimensional corneal tomography with limbus to limbus characterization of the front and back corneal surfaces and pachymetric mapping. Corneal anatomical evaluation has further evolved to layered or segmental tomography with the ability to characterize corneal epithelial thickness profile and the elevation of stromal front surface...
April 8, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28386036/silent-brain-infarctions-and-leukoaraiosis-in-patients-with-retinal-ischemia-a-prospective-single-center-observational-study
#8
Amir Golsari, Diana Bittersohl, Bastian Cheng, Pia Griem, Christoph Beck, Andrea Hassenstein, Max Nedelmann, Tim Magnus, Jens Fiehler, Christian Gerloff, Götz Thomalla
BACKGROUND AND PURPOSE: We aimed to determine the incidence of co-occurring cerebral ischemia, extent of cerebral small vessel disease, and vascular risk profile of patients with acute retinal ischemia. METHODS: RETIS (Frequency of Acute Silent Brain Infarction and Systematic Evaluation of Stroke Risk in Retinal Ischemia) was a single-center, prospective, observational study comprising ophthalmologic examination, brain magnetic resonance imaging, and extensive diagnostic work-up of vascular risk factors and stroke cause...
May 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28367046/a-prospective-study-of-anterior-segment-ocular-parameters-in-anisometropia
#9
Neha Singh, Jolly Rohatgi, Vinod Kumar
PURPOSE: The aim of this study was to investigate the differences in anterior segment ocular parameters in anisometropia >1 D. METHODS: This study included 202 eyes of 101 subjects ranging from 10 to 40 years of age with anisometropia of 1 D or more. The subjects were divided into groups according to anisomyopia, anisoastigmatism, and anisohypermetropia. After providing informed consent, each patient underwent a detailed ophthalmological examination including cycloplegic refraction, best-corrected visual acuity, cover test, axial length (AL) measurement using A-scan ultrasound biometer, keratometry, anterior chamber depth, and central corneal thickness measurement...
April 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28366368/risk-factors-for-and-diagnosis-of-pseudophakic-cystoid-macular-edema-after-cataract-surgery-in-diabetic-patients
#10
Jin Yang, Lei Cai, Zhongcui Sun, Hongfei Ye, Qi Fan, Keke Zhang, Wenyi Lu, Yi Lu
PURPOSE: To evaluate the risk factors and potential diagnostic criteria for pseudophakic cystoid macular edema (CME) in diabetic patients after phacoemulsification. SETTING: Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China. DESIGN: Prospective nonrandomized study. METHODS: Diabetic patients were followed for up to 6 months after cataract surgery and examined to evaluate their foveal thickness, macular sensitivity, and corrected distance visual acuity...
February 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28364338/assessment-of-choroidal-osteoma-complicating-choroidal-neovascularization-by-optical-coherence-tomography-angiography
#11
Ceying Shen, Shu Yan, Min Du, Hong Zhao, Ling Shao, Yibo Hu
PURPOSE: Choroidal osteoma (CO) frequently leads to progressive visual loss due to complications of secondary choroidal neovascularization (CNV).We report herein the function of optical coherence tomography angiography (OCTA) in observation of CO complicating CNV. METHODS: A 25-year-old female presented to our hospital with chief complaint of sudden unilateral visual acuity decrease for one week, with metamorphopsia in the left eye. Her best corrected visual acuity was 0...
March 31, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28329257/lessons-learned-at-the-epicenter-of-brazil-s-congenital-zika-epidemic-evidence-from-87-confirmed-cases
#12
Jucille do Amaral Meneses, Ana Catarina Ishigami, Luisa Medeiros de Mello, Luciano Lira de Albuquerque, Carlos Alexandre Antunes de Brito, Marli Tenório Cordeiro, Lindomar José Pena
Congenital Zika virus infection has stimulated great international concern. A prospective case series of 87 infants with laboratory-confirmed congenital Zika syndrome (CZS) at the epicenter of the Brazilian Zika epidemic in Pernambuco state is presented. Mothers were interviewed for symptoms of possible Zika virus (ZIKV) infection during pregnancy, and fetal ultrasounds were obtained. Infant cerebrospinal fluid (CSF) samples were tested for ZIKV-specific antibodies, and sera were screened for other congenital infections...
May 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28283997/decision-support-system-for-detection-of-papilledema-through-fundus-retinal-images
#13
Shahzad Akbar, Muhammad Usman Akram, Muhammad Sharif, Anam Tariq, Ubaid Ullah Yasin
A condition in which the optic nerve inside the eye is swelled due to increased intracranial pressure is known as papilledema. The abnormalities due to papilledema such as opacification of Retinal Nerve Fiber Layer (RNFL), dilated optic disc capillaries, blurred disc margins, absence of venous pulsations, elevation of optic disc, obscuration of optic disc vessels, dilation of optic disc veins, optic disc splinter hemorrhages, cotton wool spots and hard exudates may result in complete vision loss. The ophthalmologists detect papilledema by means of an ophthalmoscope, Computed Tomography (CT), Magnetic Resonance Imaging (MRI) and ultrasound...
April 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28260856/measurement-of-peripapillary-retinal-nerve-fiber-layer-thickness-and-macular-thickness-in-anisometropia-using-spectral-domain-optical-coherence-tomography-a-prospective-study
#14
Neha Singh, Jolly Rohatgi, Ved Prakash Gupta, Vinod Kumar
PURPOSE: To study whether there is a difference in central macular thickness (CMT) and peripapillary retinal nerve fiber layer (RNFL) thickness between the two eyes of individuals having anisometropia >1 diopter (D) using spectral domain optical coherence tomography (OCT). MATERIAL AND METHODS: One hundred and one subjects, 31 with myopic anisometropia, 28 with astigmatic anisometropia, and 42 with hypermetropic anisometropia, were enrolled in the study. After informed consent, detailed ophthalmological examination was performed for every patient including cycloplegic refraction, best corrected visual acuity, slit lamp, and fundus examination...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28163862/comparison-of-central-corneal-thickness-measurements-by-pentacam-and-ultrasound-pachymetry-in-normal-myopic-patients
#15
Sherif Emerah, Ehab ELZakzouk, Mohamed Farag
INTRODUCTION: Precise measurement of corneal thickness is of crucial importance in corneal refractive procedures. The aim of this work is to compare the central corneal thickness measurements using Scheimpflug imaging (Pentacam) and contact US pachymetry in normal myopic patients. METHODS: This retrospective cohort study was conducted on in 144 eyes of 72 normal myopic patients during 6 months. The study location was the Research Institute of Ophthalmology (Giza, Egypt), and Magrabi Eye Hospital (Dubai, United Arab Emirates)...
December 2016: Electronic Physician
https://www.readbyqxmd.com/read/28146012/identification-of-optic-nerve-swelling-using-point-of-care-ocular-ultrasound-in-children
#16
Ronald F Marchese, Rakesh D Mistry, Gil Binenbaum, Grant T Liu, Richard J Scarfone, Ashley L Woodford, Aaron E Chen
OBJECTIVE: The aim of this study was to determine the feasibility and accuracy of point-of-care (POC) ocular ultrasound (US) when performed by a pediatric emergency medicine (PEM) physician to detect optic nerve abnormalities concerning for swelling, as compared with the fundus examination performed by an ophthalmologist. METHODS: This was a single-center, prospective cohort pilot study of children aged 12 months to 18 years who required optic disc evaluation by an ophthalmologist...
January 31, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28074538/ultrasound-biomicroscopy-and-tonometry-in-ophthalmologically-normal-pigeon-eyes
#17
Sangwan Park, Seonmi Kang, Jaegook Lim, Eunjin Park, Taekjin Nam, Seowoo Jeong, Kangmoon Seo
OBJECTIVE: To evaluate the feasibility of ultrasound biomicroscopy (UBM) and tonometry in pigeons and to provide biometric reference ranges for normal pigeon eyes. ANIMALS STUDIED: Ten pigeons (Columba livia var. domestica) with ophthalmologically normal eyes. PROCEDURES: Ophthalmic examinations, including slit-lamp biomicroscopy and tonometry, were performed to confirm that the eyes were normal. UBM was then performed on the left eye. On each obtained image, the ciliary cleft (CC) length, CC width, and CC area, and iridocorneal angle (ICA) were measured...
January 11, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28060137/infants-with-congenital-zika-syndrome-and-ocular-findings-from-s%C3%A3-o-paulo-brazil-spread-of-infection
#18
João Rafael de Oliveira Dias, Camila V Ventura, Paula Delegrego Borba, Bruno de Paula Freitas, Ligia Camera Pierroti, Ana Patricia do Nascimento, Nilva Simeren Bueno de Moraes, Maurício Maia, Rubens Belfort
BACKGROUND/PURPOSE: To describe the ocular findings of two infants with congenital Zika syndrome born in São Paulo state, Brazil, outside the primary outbreak region. METHODS: Two female infants with congenital Zika syndrome were submitted to a complete screening for infectious diseases, as well as ocular examination, fundus photography, and optical coherence tomography of the retina. One of the infants was submitted to ocular ultrasound. RESULTS: Both children showed positive serology for Zika virus, and other infectious diseases were ruled out...
January 2, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28050464/senior-loken-syndrome
#19
Amarpreet Kaur, Shashi Kant Dhir, Geetika Goyal, Naveen Mittal, R K Goyal
Senior Loken Syndrome (SLS) is a rare genetic disorder having juvenile nephronophthisis and retinal degeneration progressing to blindness and end stage renal disease. The present case report is about two sisters who presented with decreased visual acuity and end stage renal disease. Both had decreased vision, pallor, deranged renal function test and chronic malnutrition. Investigations revealed anaemia, uraemia, raised creatinine, low Glomerular Filteration Rate (GFR). Ophthalmology examination revealed nystagmus, retinal examination depicted pale optic disc and pigmentary changes in the retina...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28007115/comparison-of-stability-between-a-modular-intraocular-lens-system-and-a-single-piece-hydrophobic-acrylic-intraocular-lens
#20
Jeffrey R SooHoo, Stephen S Lane, Robert J Cionni, John P Berdahl, Glenn R Sussman, Malik Y Kahook
PURPOSE: To compare the movement of a modular intraocular lens (IOL) with that of a standard single-piece hydrophobic acrylic IOL in a human cadaver eye perfusion model. SETTING: Department of Ophthalmology, University of Colorado, Aurora, Colorado, USA. DESIGN: Experimental study. METHODS: Eight phakic human donor eyes of 4 patients had standard phacoemulsification with lens removal. One of 2 IOLs was then implanted in the capsular bag: a modular IOL (Harmoni) or a standard single-piece IOL (Acrysof SN60)...
December 2016: Journal of Cataract and Refractive Surgery
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