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Ophthalmic ultrasound

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https://www.readbyqxmd.com/read/28169918/bilateral-blebs-secondary-to-spontaneous-scleral-perforations
#1
Ester Fernández López, Alexander Poon, Andrew Huhtanen, Richard Lindsay, Catherine Green
PURPOSE: To report an unusual case of bilateral spontaneous scleral perforations. METHODS: A 34-year-old woman presented with bilateral conjunctival blebs and decreased vision in both eyes. There was no history of ocular trauma or surgery and no previous ophthalmic or systemic conditions that may have contributed to the scleral perforations. RESULTS: Best-corrected visual acuity was 20/40 in both eyes and intraocular pressures were 6 mm Hg in the right and 5 mm Hg in the left...
February 6, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28114163/doppler-ultrasonography-of-the-central-retinal-vessels-in-children-with-brain-death
#2
Becky J Riggs, Joanna S Cohen, Bhavana Shivakumar, Carmelina Trimboli-Heidler, Jason T Patregnani, Marijean M Miller, Michael C Spaeder, Nathan P Dean
OBJECTIVE: The purpose of this observational study is to explore if bedside Doppler ultrasonography of the central retinal vessels has the potential to become an ancillary study to support the timely diagnosis of brain death in children. DESIGN: Seventeen-month prospective observational cohort. SETTING: Forty-four bed pediatric medical and surgical ICU in an academic teaching hospital. PATIENTS: All children 0-18 years old who were clinically evaluated for brain death at Children's National Health Systems were enrolled and followed until discharge or death...
January 20, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28074538/ultrasound-biomicroscopy-and-tonometry-in-ophthalmologically-normal-pigeon-eyes
#3
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/28056057/flat-anterior-chamber-after-trabeculectomy-in-secondary-angle-closure-glaucoma-with-best1-gene-mutation-case-series
#4
Yimin Zhong, Xinxing Guo, Hui Xiao, Jingyi Luo, Chengguo Zuo, Xiaobo Huang, Jingjing Huang, Lan Mi, Qingjiong Zhang, Xing Liu
PURPOSE: Trabeculectomy has been regarded as a mainstay of initial treatment in eyes of angle closure glaucoma (ACG) with peripheral anterior synechia > 180° in the Chinese population while its efficacy in secondary ACG with BEST1 gene mutation remains unclear. We set out to investigate the treatment outcome of trabeculectomy for secondary ACG in a group of patients with autosomal recessive bestrophinopathy (ARB). METHODS: In this retrospective case series study, 8 secondary ACG patients with ARB and their 4 recruited family members underwent a thorough ophthalmic examination including best-corrected visual acuity, Goldmann applanation tonometry, gonioscopy, and fundus examinations...
2017: PloS One
https://www.readbyqxmd.com/read/28040528/role-of-diagnostic-endoscopy-in-posterior-segment-evaluation-for-definitive-prognostication-in-eyes-with-corneal-opacification
#5
Rajeev R Reddy Pappuru, Mudit Tyagi, Remya M Paulose, Vivek P Dave, Taraprasad Das, Jay Chhablani, Raja Narayanan, Rushil K Saxena, Divya Balakrishnan, Sayan Basu, Virender S Sangwan
PURPOSE: Direct visualization of the posterior segment is not possible with conventional imaging techniques in eyes with corneal opacification. This study evaluated the efficacy of video-endoscopy in visualising and hence prognosticating the visual outcomes in such eyes . DESIGN: Prospective non-comparative consecutive interventional case series. METHODS: This study included 64 eyes of 64 patients with corneal opacification who underwent diagnostic ophthalmic endoscopy procedure from March 2014 to May 2016...
December 28, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28002851/prenatal-ultrasonographic-diagnosis-of-cataract-in-utero-manifestations-of-cryptic-disease
#6
Eran Ashwal, Asaf Achiron, Yinon Gilboa, Michal Berkenstadt, Mordecai Rosner, Reuven Achiron
Purpose To report and review our experience with antenatal evaluation for fetuses diagnosed with congenital cataract. Materials and Methods We retrospectively identified pregnancies diagnosed with fetal cataract during antenatal ultrasound. Evaluation of fetal eyes included intraocular anatomy and biometry. Data on fetal malformations, serology and fetal karyotype were collected. Results 8 cases, identified over the course of 10 years, were reviewed. Week 15 was the mean time for diagnosis (range 11 - 34)...
December 21, 2016: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/27990593/is-the-unaffected-eye-really-unaffected-color-doppler-ultrasound-findings-in-unilaterally-active-central-serous-chorioretinopathy
#7
Iclal Erdem Toslak, Muhammet Kazim Erol, Devrim Toslak, Bulent Cekic, Mehtap Barc Ergun, Jennifer E Lim-Dunham
PURPOSE: To evaluate ocular hemodynamic changes using color Doppler ultrasonography imaging (CDI) with an emphasis on unaffected eyes of patients with central serous chorioretinopathy (CSC). METHODS: Twenty-seven patients with active CSC and 25 controls were analyzed using spectral domain-optical coherence tomography (SD-OCT) and CDI for choroidal imaging and evaluation of retrobulbar vessels, respectively. RESULTS: Resistive index (RI), pulsatility index (PI), and peak systolic velocity (PSV) of the ophthalmic artery (OA) and PSV, end-diastolic velocity (EDV), and mean velocity (Vmean) of the central retinal artery (CRA) in the patient group were less than those in the control group...
December 18, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27930421/persistent-asymmetric-optic-disc-swelling-after-long-duration-space-flight-implications-for-pathogenesis
#8
Thomas H Mader, C Robert Gibson, Christian A Otto, Ashot E Sargsyan, Neil R Miller, Prem S Subramanian, Stephen F Hart, William Lipsky, Nimesh B Patel, Andrew G Lee
BACKGROUND: Several ophthalmic findings including optic disc swelling, globe flattening and choroidal folds have been observed in astronauts following long-duration space flight. The authors now report asymmetric choroidal expansion, disc swelling and optic disc morphologic changes in a 45-year-old astronaut which occurred during long-duration space flight and persisted following his space mission. METHODS: Case study of ocular findings in an astronaut documented during and after a long-duration space flight of approximately 6 months...
December 5, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27911425/-biometric-parameters-of-vitrectomized-eyes
#9
S V Asatryan, V K Surguch, S I Kharlap, T A Shchegoleva
AIM: To analyze changes in various biometric parameters after vitrectomy. MATERIAL AND METHODS: A total of 50 patients (50 eyes) were followed up. All of them underwent vitrectomy for idiopathic epiretinal fibrosis and macular hole. In addition to the standard ophthalmic examination, we performed a combined ultrasound study and ultrasound biomicroscopy before and after the surgery (at 2-3 weeks and 6 months). Variation statistics was applied to assess the results using the SPSS Statistica 20 software...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27843513/bilateral-choroidal-metastases-from-endobronchial-carcinoid-treated-with-somatostatin-analogues
#10
Deborah De Bruyn, Jan Lamont, Erik Vanderstraeten, Simon Van Belle, Elise Platteau, Julie De Zaeytijd, Kristien P Hoornaert
OBJECTIVE: To describe a patient with bilateral multifocal choroidal metastases from an endobronchial carcinoid treated with a somatostatin analogue. METHOD: A 60-year-old woman presenting with photopsia in the left eye underwent an extensive ophthalmic examination, including fluorescein angiography, OCT and ultrasound. RESULTS: Fundoscopy revealed a small retinal tear in the left eye, for which she received laser treatment. In addition, choroidal masses were detected in both eyes...
2016: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/27830057/automated-analysis-of-retinal-imaging-using-machine-learning%C3%A2-techniques-for-computer-vision
#11
Jeffrey De Fauw, Pearse Keane, Nenad Tomasev, Daniel Visentin, George van den Driessche, Mike Johnson, Cian O Hughes, Carlton Chu, Joseph Ledsam, Trevor Back, Tunde Peto, Geraint Rees, Hugh Montgomery, Rosalind Raine, Olaf Ronneberger, Julien Cornebise
There are almost two million people in the United Kingdom living with sight loss, including around 360,000 people who are registered as blind or partially sighted. Sight threatening diseases, such as diabetic retinopathy and age related macular degeneration have contributed to the 40% increase in outpatient attendances in the last decade but are amenable to early detection and monitoring. With early and appropriate intervention, blindness may be prevented in many cases. Ophthalmic imaging provides a way to diagnose and objectively assess the progression of a number of pathologies including neovascular ("wet") age-related macular degeneration (wet AMD) and diabetic retinopathy...
2016: F1000Research
https://www.readbyqxmd.com/read/27817969/quantification-of-temperature-rise-within-the-lens-of-the-porcine-eye-caused-by-ultrasound-insonation
#12
Randy L King, Yunbo Liu, Gerald R Harris
The soft tissue thermal index defined in the Output Display Standard is not applicable to eye exposures because of unique eye properties such as high ultrasound absorption in the lens and orbital fat. To address this potential safety issue, the U.S. Food and Drug Administration has recommended a maximum exposure level for ophthalmic exams of 50 mW/cm(2) (derated spatial-peak temporal-average intensity, ISPTA.3) based on a model of ultrasound propagation in the eye. To gain a better understanding of actual temperature rise as a function of ISPTA...
February 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27759862/first-travel-associated-congenital-zika-syndrome-in-the-us-ocular-and-neurological-findings-in-the-absence-of-microcephaly
#13
Camila V Ventura, Maria Paula Fernandez, Ivan A Gonzalez, Delia M Rivera-Hernandez, Roberto Lopez-Alberola, Maria Peinado, Angelica A Floren, Patricia A Rodriguez, Basil K Williams, Gabriela de la Vega Muns, Ana J Rodriguez, Catherin Negron, Brenda Fallas, Audina M Berrocal
A 6-day-old female baby with known diagnosis of congenital Zika infection was referred for ophthalmologic examination. The mother (37 years old) was referred for a pruritic rash, conjunctival hyperemia, and malaise at 12 weeks of gestation while still living in Venezuela. Upon arrival to Miami, Zika virus (ZIKV) exposure was confirmed during prenatal screening. At birth, due to the known exposure, a complete congenital ZIKV workup was performed, including brain ultrasound and MRI, which disclosed calcifications in the frontal lobe...
October 1, 2016: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/27757007/focused-ultrasound-in-ophthalmology
#14
Ronald H Silverman
The use of focused ultrasound to obtain diagnostically significant information about the eye goes back to the 1950s. This review describes the historical and technological development of ophthalmic ultrasound and its clinical application and impact. Ultrasound, like light, can be focused, which is crucial for formation of high-resolution, diagnostically useful images. Focused, single-element, mechanically scanned transducers are most common in ophthalmology. Specially designed transducers have been used to generate focused, high-intensity ultrasound that through thermal effects has been used to treat glaucoma (via ciliodestruction), tumors, and other pathologies...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27688279/prevalence-of-glaucoma-in-eastern-india-the-hooghly-river-glaucoma-study
#15
Chandrima Paul, Subhrangshu Sengupta, Sumit Choudhury, Souvik Banerjee, Betsy L Sleath
CONTEXT: Glaucoma is the leading cause of global irreversible blindness. No recent study with adequate sample size has been carried out to estimate glaucoma prevalence in Eastern India. AIMS: The aim of this study was to assess and compare the prevalence and types of glaucoma in a rural and urban East Indian population. SETTINGS AND DESIGN: The Hooghly River Glaucoma Study (HRGS) is a population-based cross-sectional study from West Bengal...
August 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27664288/historical-perspectives-on-the-management-of-macular-degeneration-diabetic-retinopathy-and-retinal-detachment-personal-reminiscences
#16
Stuart L Fine, Morton F Goldberg, William Tasman
We were challenged and delighted when Dr. Sharon Solomon, guest editor of this Retina Supplement, invited us to reminisce about caring for patients with common retinal disorders before there was access to the diagnostic and therapeutic tools that are readily available today. We agreed to confine our remarks to 3 common, but serious, conditions: age-related macular degeneration (Dr. Fine), diabetic retinopathy (Dr. Goldberg), and retinal detachment (Dr. Tasman). Each of us completed our ophthalmology training about half a century ago...
October 2016: Ophthalmology
https://www.readbyqxmd.com/read/27648682/ocular-and-electrophysiological-findings-in-a-patient-with-sly-syndrome
#17
Maree Flaherty, Katie Geering, Stephanie Crofts, John Grigg
BACKGROUND: Sly syndrome (Mucopolysaccharidosis Type VII) is an autosomal recessive metabolic storage disorder due to mutations in the GUSB gene encoding the enzyme beta-glucuronidase. Deficiency of this lysosomal enzyme impairs the body's ability to break down the glycosaminoglycans - dermatan, heparan and chondroitin sulphate. Coarse facial features and macrocephaly are typically seen along with bony and skeletal abnormalities, including joint contractures and short stature. Widespread involvement occurs in many other tissues including cardiopulmonary, gastrointestinal, and neurological systems...
September 20, 2016: Ophthalmic Genetics
https://www.readbyqxmd.com/read/27648303/evaluation-of-anterior-segment-s-structures-in-tilted-disc-syndrome
#18
Ercan Ozsoy, Abuzer Gunduz, Ersin Ersan Demirel, Tongabay Cumurcu
Purpose. To evaluate anterior segment's structures by Pentacam in patients with tilted disc syndrome (TDS). Methods. Group 1 included forty-six eyes of forty-six patients who have the TDS. Group 2 including forty-six eyes of forty-six cases was the control group which was equal to the study group in age, gender, and refraction. A complete ophthalmic examination was performed in both groups. All cases were evaluated by Pentacam. The axial length (AL) of eyes was measured by ultrasound. Quantitative data obtained from these measurements were compared between two groups...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27617573/characterization-of-the-eyes-in-preoperative-cataract-saudi-patients-by-using-medical-diagnostic-ultrasound
#19
M Z Mahmoud, M Alkhorayef, A Sulieman
Objective: This study was designed with an aim to visualize the status of the posterior portion of the eye globe of adult Saudi cataract patients with brightness mode (B-mode) ultrasound, to find out any posterior segment lesions in such preoperative cases. Methods: A prospective study was performed between May 2014 and May 2015. A 375 pre-operative cataract (184, 49.1%) males and (191, 50.9%) females between the ages from 18 to 90 years; mean age of 54 ± 0.5 years were scanned at two Radiology Departments...
February 15, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/27591784/assessment-of-orbital-blood-flow-velocities-in-retinopathy-of-prematurity
#20
Pehmen Yasin Ozcan, Ferit Dogan, Kenan Sonmez, Rahim Con, Dilek Sen Dokumaci, Eyüp Sabri Seyhanli
The purpose of this study is to evaluate whether the presence of any stage retinopathy of prematurity (ROP) alters central retinal artery (CRA) and ophthalmic artery (OA) blood flow parameters in premature infants. The patients were divided into two groups according to the development of ROP; those who have ROP were defined as group I, those without ROP were defined as group II. Ninety eyes of 45 patients in group I and 40 eyes of 20 patients in group II were investigated. The blood flows in the CRA and OA were measured using ultrasound color doppler imaging (CDI) that allows to evaluate the peak systolic velocity (PSV), end diastolic velocity (EDV), and resistivity index (RI)...
September 3, 2016: International Ophthalmology
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