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Ocular ultrasound

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https://www.readbyqxmd.com/read/28329999/bilateral-cystic-coloboma-with-microphtalmos-and-eyelid-agenesis-us-and-mri-findings
#1
Youssef Omor, Benjamin Dhaene, Veronique Toppet, Marie Cassart, Patrice Jissendi-Tchofo
INTRODUCTION: The combination of bilateral microphthalmos, cystic coloboma and eyelid agenesis is rare. The definite diagnosis of this malformation is established by fundoscopic examination and confirmed by imaging modalities such as ultrasonography (US) and magnetic resonance imaging (MRI). This disorder may be associated with specific chromosomal abnormalities. CASE REPORT: A 1-week-old male newborn was referred for bilateral eyelid agenesis. He was born at term by caesarean for foetal distress, after an uneventful gestation...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28318831/refractory-aqueous-misdirection-syndrome-a-possible-complication-of-penetrating-keratoplasty
#2
I Gama, W M Rodrigues, H P Filipe, M Y Faria, L D Almeida
CLINICAL CASE: An 85 year-old woman presented with a flat anterior chamber of the left eye, severe ocular hypertension, and a normal ultrasound examination in the day following a penetrating keratoplasty (PK). The clinical status did not respond to maximum medical therapy, laser posterior capsulotomy, anterior hyaloidotomy, and complete 23 G vitrectomy. The patient refused further intervention, and light perception was lost after 6 months of follow-up. DISCUSSION: This is the first report of refractory aqueous misdirection syndrome following primary PK...
March 16, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28302681/ultrasound-biomicroscopic-imaging-in-paediatric-ocular-toxocariasis
#3
Jinghua Liu, Songfeng Li, Guangda Deng, Wenli Yang, Wei Chen, Hai Lu
PURPOSE: To determine the potential and usefulness of ultrasound biomicroscopy (UBM) as a diagnostic procedure on a larger cohort of paediatric patients with ocular toxocariasis. METHODS: UBM was performed on 41 eyes of 41 patients with ocular toxocariasis in order to determine configuration of peripheral retina, pars plana and vitreous. Location and range of peripheral pathology using ophthalmoscopy with scleral indentation, UBM and intraoperative confirmation were recorded and compared...
March 16, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28292775/effectiveness-of-combined-macular-buckle-under-direct-vision-and-vitrectomy-with-ilm-peeling-in-refractory-macular-hole-retinal-detachment-with-extreme-high-axial-myopia-a-24-month-comparative-study
#4
Jin Ma, Honghui Li, Xiaohu Ding, Silvia Tanumiharjo, Lin Lu
PURPOSE: To evaluate the efficacy of a combined macular buckle under direct vision and 23-gauge pars plana vitrectomy (PPV) with internal limiting membrane (ILM) peeling in refractory macular hole retinal detachment (MHRD) with extreme high axial myopia. DESIGN: Prospective, randomised controlled study. PARTICIPANTS: The study included 98 eyes of 98 patients of MHRD with extreme high axial (>30 mm) myopia. INTERVENTION: Patients were randomly assigned to undergo PPV with ILM peeling (group 1, n=52) or PPV with ILM peeling combined with macular buckle under direct vision (group 2, n=46)...
March 14, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28275423/in-vivo-imaging-of-ocular-blood-flow-using-high-speed-ultrasound
#5
Jeffrey A Ketterling, Raksha Urs, Ronald H Silverman
Clinical ophthalmic ultrasound is currently performed with mechanically scanned, single-element probes, but these are unable to provide useful information about blood flow with Doppler techniques. Linear arrays are well-suited for the detection of blood flow, but commercial systems generally exceed FDA ophthalmic safety limits. A high-speed plane-wave ultrasound approach with an 18-MHz linear array was utilized to characterize blood flow in the orbit and choroid. Acoustic intensity was measured and the plane-wave mode was within FDA limits...
September 2016: IEEE International Ultrasonics Symposium: [proceedings]
https://www.readbyqxmd.com/read/28267111/blind-sided-by-cosmetic-vein-sclerotherapy-a-case-of-ophthalmic-arterial-occlusion
#6
Meena Arunakirinathan, Robbie J E Walker, Noor Hassan, Sally Ameen, Saad Younis
PURPOSE: Cosmetic vein sclerotherapy is increasingly used to treat varicose veins because of its effectiveness and adherence with British Pharmacopoeia specifications. We present the first documented case of ophthalmic artery occlusion resulting in panocular ischemia secondary to intravascular injection of sodium tetradecyl sulfate sclerosant in a young healthy women seeking treatment for prominent facial veins in her forehead. METHODS: The patient presented with unilateral sudden loss of vision...
March 6, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28255299/selenium-and-thyroid-disease-from-pathophysiology-to-treatment
#7
REVIEW
Mara Ventura, Miguel Melo, Francisco Carrilho
Introduction. Selenium is a micronutrient embedded in several proteins. In adults, the thyroid is the organ with the highest amount of selenium per gram of tissue. Selenium levels in the body depend on the characteristics of the population and its diet, geographic area, and soil composition. In the thyroid, selenium is required for the antioxidant function and for the metabolism of thyroid hormones. Methods. We performed a review of the literature on selenium's role in thyroid function using PubMed/MEDLINE...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28248767/ocular-ultrasound-to-detect-raised-intracranial-pressure
#8
Moritz Claudius Daniel, Marie Restori, James Acheson, Annegret Dahlmann-Noor
No abstract text is available yet for this article.
March 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28203193/recurrent-uveal-effusion-after-laser-iridotomy
#9
Hiroshi Sakai, Michiko Yonahara, Miyako Sakai
A 59-year-old woman was seen by an ophthalmologist for blurred vision, ocular pain, headache, and nausea. She was diagnosed with acute primary angle closure (APAC) and successfully treated with medications. Using ultrasound biomicroscopy (UBM), engorged episcleral vein was observed and small uveal effusion was diagnosed after laser peripheral iridotomy (LPI). The uveal effusion disappeared and was again diagnosed by UBM together with anterior segment inflammation with ocular pain. Iritis caused by LPI after APAC might be a cause of uveal effusion in this specific case...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28187010/imaging-the-canaliculops-with-ultrasound-biomicroscopy-and-anterior-segment-ocular-coherence-tomography
#10
Swati Singh, Mohammad Javed Ali, Hari Kumar Peguda, Milind N Naik
Canaliculops is a noninflammatory and noninfectious ectasia of the canaliculus with serous fluid accumulation. Currently, the etiology is uncertain. To the best of the authors' knowledge only 6 confirmed cases have been published earlier; however, the imaging features were not described. The authors report the ultrasound biomicroscopic and ocular coherence tomography features of a histopathologically proven canaliculops.
February 9, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28169918/bilateral-blebs-secondary-to-spontaneous-scleral-perforations
#11
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/28146012/identification-of-optic-nerve-swelling-using-point-of-care-ocular-ultrasound-in-children
#12
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/28126366/testing-for-zika-virus-infection-in-pregnancy-key-concepts-to-deal-with-an-emerging-epidemic
#13
REVIEW
Catherine Eppes, Martha Rac, James Dunn, James Versalovic, Kristy O Murray, Melissa A Suter, Magda Sanz Cortes, Jimmy Espinoza, Maxim D Seferovic, Wesley Lee, Peter Hotez, Joan Mastrobattista, Steven L Clark, Michael A Belfort, Kjersti M Aagaard
Zika virus is an emerging mosquito-borne (Aedes genus) arbovirus of the Flaviviridae family. Following epidemics in Micronesia and French Polynesia during the past decade, more recent Zika virus infection outbreaks were first reported in South America as early as May 2013 and spread to now 50 countries throughout the Americas. Although no other flavivirus has previously been known to cause major fetal malformations following perinatal infection, reports of a causal link between Zika virus and microcephaly, brain and ocular malformations, and fetal loss emerged from hard-hit regions of Brazil by October 2015...
March 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28074538/ultrasound-biomicroscopy-and-tonometry-in-ophthalmologically-normal-pigeon-eyes
#14
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/28068950/corneal-hysteresis-in-patients-with-glaucoma-like-optic-discs-ocular-hypertension-and-glaucoma
#15
Melissa L Murphy, Olya Pokrovskaya, Marie Galligan, Colm O'Brien
BACKGROUND: To compare corneal hysteresis (CH) measurements between patients with glaucoma, ocular hypertension (OHT) and glaucoma-like optic discs (GLD)- defined as a cup to disc ratio greater than or equal to 0.6 with normal intraocular pressure (IOP) and visual fields. The secondary aim was to investigate whether corneal resistance factor (CRF) and central corneal thickness (CCT) differ between patient groups. METHODS: In this cross sectional study a total of 123 patients (one eye each) were recruited from a glaucoma outpatient department to undergo ocular response analyser (ORA) testing and ultrasound pachymetry as well as clinical examination...
January 10, 2017: BMC 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
#16
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/28048173/su-f-t-51-investigating-the-effect-of-eye-size-and-eccentricity-on-normal-tissue-doses-from-eye-plaque-brachytherapy
#17
E Polsdofer, R Crilly
PURPOSE: This study investigates the effect of eye size and eccentricity on doses to critical tissues by simulating doses in the Plaque Simulator (v. 6.3.1) software. Present OHSU plaque brachytherapy treatment focuses on delivering radiation to the tumor measured with ocular ultrasound plus a small margin and assumes the orbit has the dimensions of a "standard eye." Accurately modeling the dimensions of the orbit requires a high resolution ocular CT. This study quantifies how standard differences in equatorial diameters and eccentricity affect calculated doses to critical structures in order to query the justification of the additional CT scan to the treatment planning process...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28040528/role-of-diagnostic-endoscopy-in-posterior-segment-evaluation-for-definitive-prognostication-in-eyes-with-corneal-opacification
#18
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
#19
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/27997379/the-impact-of-intraocular-pressure-on-elastic-wave-velocity-estimates-in-the-crystalline-lens
#20
Suhyun Park, Heechul Yoon, Kirill V Larin, Stanislav Y Emelianov, Salavat R Aglyamov
Intraocular pressure (IOP) is believed to influence the mechanical properties of ocular tissues including cornea and sclera. The elastic properties of the crystalline lens have been mainly investigated with regard to presbyopia, the age-related loss of accommodation power of the eye. However, the relationship between the elastic properties of the lens and IOP remains to be established. The objective of this study is to measure the elastic wave velocity, which represents the mechanical properties of tissue, in the crystalline lens ex vivo in response to changes in IOP...
December 20, 2016: Physics in Medicine and Biology
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