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Ocular ultrasound

Bhagya Sudheer, Manisha Agarwal, Deepa Sharma, Ravi Mehta, Kalpana Babu
PURPOSE: To report our experience of using Endobronchial ultrasound-guided transbronchial lymph node aspiration (EBUS-TBNA) in assessing the etiology in uveitis from two tertiary eye-care centers in India. MATERIALS & METHODS: Retrospective interventional case series. RESULTS: A total of 99 patients of uveitis who underwent EBUS-TBNA were included in the study. Mycobacterium tuberculosis (MTb) was detected on culture in 5 cases, 3 cases by polymerase chain reaction and caseating granulomas in 25 cases...
March 15, 2018: Ocular Immunology and Inflammation
L Meomartino, M P Pasolini, B Lamagna, G Mennonna, L Auletta, C Murino, G Della Valle, L Esposito
The aim of this work is to assess the normal ultrasonographic features and dimensions of eyes in European hares. Corneal thickness, anterior chamber depth, lens thickness, vitreous chamber depth and eye axial length were measured by ultrasound in 40 healthy hares (Lepus europaeus), 20 males and 20 females, mean age of 5.5 months (range 2-15 months). The effects of sex, side, age and body weight on each feature were recorded. Results show that ocular dimensions were not affected by considered variables except for the lenses thickness and axial length that were correlated with age and body weight...
March 14, 2018: Anatomia, Histologia, Embryologia
Andrew G Lee, Thomas H Mader, C Robert Gibson, Tyson J Brunstetter, William J Tarver
Interesting novel and somewhat perplexing physiologic and pathologic neuro-ocular findings have been documented in astronauts during and after long duration space flight (LDSF). These findings collectively have been termed the "space flight-associated neuro-ocular syndrome" (SANS). The National Aeronautics and Space Administration (NASA) in the United States has meticulously and prospectively documented the clinical, ultrasound, optical coherence tomography imaging, and radiographic findings of SANS including unilateral and bilateral optic disc edema, globe flattening, choroidal and retinal folds, hyperopic refractive error shifts, and nerve fiber layer infarcts (i...
March 12, 2018: Eye
Kelly E Knickelbein, Mallory Stock, Sebastian E Carrasco, Christopher M Reilly, Mary E Lassaline
An 18-year-old American Miniature Horse mare was presented with a complaint of a scleral swelling affecting the right eye and a history of suspected trauma 6 weeks prior to evaluation. Clinical findings included severe blepharospasm, a bulbous swelling of the dorsotemporal bulbar conjunctiva, and phthisis bulbi. Ocular ultrasound was recommended but declined. Enucleation was elected for the blind, painful eye and was performed standing. Gross and histopathologic examinations of the globe were consistent with extrusion of the lens to the episcleral space, which is classified as a traumatic phacocele when associated with naturally occurring trauma...
March 8, 2018: Veterinary Ophthalmology
Ta C Chang, Linda Y Huang, Kara M Cavuoto
Purpose: We describe a case of secondary open-angle glaucoma due to mucin-producing congenital iris stromal cyst in a 4 year old patient. Observations: A 4-year old female patient with a history of unilateral congenital iris stromal cyst presented with sudden-onset eye pain and redness, with markedly elevated intraocular pressure and evidence of early optic nerve damage. During the examination under anesthesia, the anterior chamber angle was open and there was no evidence of pupillary block...
April 2017: American Journal of Ophthalmology Case Reports
Nikolaos Mamas, Konstantinos Andreanos, Dimitrios Brouzas, Andreas Diagourtas, Andreas Droulias, Ilias Georgalas, Dimitrios Papaconstantinou
PURPOSE: To report the case of a 65-year-old metalworker with no known history of ocular trauma, who suffered from intense ocular pain during magnetic resonance imaging (MRI) of the brain, due to a retained intraocular metallic foreign body (IOFB). CASE REPORT: Meticulous ophthalmological examination was inconclusive. An IOFB was confirmed with X-ray scan, whereas its exact localization was enabled by means of ultrasonography and ultrasound biomicroscopy (UBM). CONCLUSIONS: Despite appropriate screening protocols, MRI-related ocular complications might occur in the presence of a hidden metallic IOFB...
March 2, 2018: Journal of Ultrasound
Rodolfo Gialletti, Andrea Marchegiani, Tiziana Valeriani, Sara Nannarone, Francesca Beccati, Alessandro Fruganti, Fulvio Laus
PURPOSE: To describe the association of clinical and ultrasonographic (US) findings in horses affected by visual impairments, to estimate the most frequent ultrasonographic alteration as well importance and limits of US as a part of ophthalmic evaluation in equine patients. METHODS: One-hundred-forty-five horses referred to the Veterinary Teaching Hospitals of the University of Perugia and Camerino for ocular problems were submitted to ophthalmic examination and ocular ultrasound...
February 28, 2018: Journal of Ultrasound
Aaron Dentinger, Michael MacDonald, Douglas Ebert, Kathleen Garcia, Ashot Sargsyan
OBJECTIVE:  The objective is enhanced ophthalmic ultrasound imaging to monitor ocular structure and intracranial dynamics changes related to visual impairment and intracranial pressure (ICP) induced by microgravity. The goals are to improve the ease of use and reduce operator variability by automatically rendering improved views of the anatomy and deriving new metrics of the morphology and dynamics. MATERIALS AND METHODS:  A prototype three-dimensional (3-D) probe was integrated onto a portable ultrasound scanner...
2018: Acta Neurochirurgica. Supplement
Xingyi Li, Wei Wang, Wenbin Huang, Shida Chen, Jiawei Wang, Zhonghao Wang, Yaoming Liu, Mingguang He, Xiulan Zhang
PURPOSE: To measure the anterior and posterior ocular biometric characteristics concurrently and to explore the relationship between iris, ciliary body and choroid in acute primary angle closure eyes (APAC) and fellow eyes. METHODS: It is a prospective, cross-sectional study. Thirty patients with recent APAC were finally enroled in it. Anterior and posterior uveal parameters were measured simultaneously by anterior segment optical coherence tomography (AS-OCT), swept-source optical coherence tomography (SS-OCT) and ultrasound biomicroscopy (UBM)...
March 1, 2018: Eye
Wei Song, Yongjie Zhang, Hongming Chen, Cheng Du
RATIONALE: To report a case of 44-year-old man with delayed suprachoroidal hemorrhage (DSCH) 2 days after cataract surgery. PATIENT CONCERNS: The patient developed sudden onset of ocular pain and reduction of visual acuity on his left eye 2 days after receiving conventional cataract operation. DIAGNOSES: The ocular conditions were accessed by best-corrected visual acuity, intraocular pressure, slit lamp examination, fundus photography, and B-scan ultrasound...
January 2018: Medicine (Baltimore)
Mohammad Ghoreishi, Mehdi Abdi-Shahshahani, Alireza Peyman, Mohsen Pourazizi
PURPOSE: The aim of this study was to determine the correlation between ocular biometric parameters and sulcus-to-sulcus (STS) diameter. METHODS: This was a cross-sectional study of preoperative ocular biometry data of patients who were candidates for phakic intraocular lens (IOL) surgery. Subjects underwent ocular biometry analysis, including refraction error evaluation using an autorefractor and Orbscan topography for white-to-white (WTW) corneal diameter and measurement...
February 21, 2018: International Ophthalmology
Giuseppe Giannaccare, Stefano Sebastiani, Emilio C Campos
Glaucoma is a chronic disease caused by the progressive degeneration of the optical nerve fibers, resulting in decreased visual field that can lead to severe visual impairment, and eventually blindness. This manuscript describes a simple, surgeon-friendly, non-incisional technique, named Ultrasound Cyclo Plasty (UCP), for reducing intraocular pressure (IOP) in glaucoma patients. The technique determines a selective coagulation necrosis of the ciliary body; in addition, the stimulation of supra-choroidal and trans-scleral portions of the uveo-scleral outflow pathway has been recently proposed...
January 26, 2018: Journal of Visualized Experiments: JoVE
Fehmi Ferhi, Abdeljalil Khlifi, Feten Hachani, Khalil Tarmiz, Khaled Benjazia
Bilateral retinal detachments and cortical blindness are rare complications of preeclampsia and the association of the two pathologies is exceptional. We report the case of a preeclamptic patient who presented with an acute bilateral vision loss. Besides, her ocular ultrasound revealed bilateral retinal detachments and an elevated optic nerve sheath diameter. The patient underwent an urgent cesarean section. Subsequently, magnetic resonance imaging and ocular fundus examination confirmed the diagnosis.
February 12, 2018: Critical Ultrasound Journal
Bozho Todorich, Lisa J Faia, Aristomenis Thanos, Mitual Amin, Robert Folberg, Jeremy D Wolfe, Krista M Todorich, Efthemios Raphtis, Alan J Ruby, George A Williams, Tarek S Hassan
PURPOSE: To derive novel insights into the pathophysiology of vancomycin-related hemorrhagic occlusive retinal vasculopathy (HORV) through a careful clinicopathologic correlation. METHODS: and study design: We retrospectively reviewed the clinical and pathologic course of two consecutive patients who developed HORV. The clinical history, multimodal imaging, ultrasound biomicroscopy (UBM), intraoperative and histological findings are reported. RESULTS: Both patients presented with decreased vision and eye pain within 1 week following otherwise uncomplicated cataract extraction and were diagnosed with HORV after endophthalmitis was ruled out...
February 6, 2018: American Journal of Ophthalmology
Adel M Badawy, Eman A Eshra
OBJECTIVE: Description of an ultrasound (US)-guided technique for retrobulbar nerve blockade in dromedary (Camelus dromedarius) cadavers. STUDY DESIGN: Prospective experimental cadaveric study that was carried out in three phases: phase I: anatomical dissection and development of US-guided technique; phase II: methylene blue (MB) injection; phase III: contrast medium (CM), US-guided injections with computed tomography (CT) control. ANIMALS: A total of 36 orbits from 18 heads were obtained from 18 dromedary cadavers...
November 7, 2017: Veterinary Anaesthesia and Analgesia
Elias Pavlatos, Hong Chen, Keyton Clayson, Xueliang Pan, Jun Liu
Imaging corneal biomechanical changes or abnormalities is important for better clinical diagnosis and treatment of corneal diseases. We propose a novel ultrasound-based method, called ocular pulse elastography (OPE), to image corneal deformation during the naturally occurring ocular pulse. Experiments on animal and human donor eyes, as well as synthetic radiofrequency (RF) data, were used to evaluate the efficacy of the OPE method. Using very high-frequency ultrasound (center frequency = 55 MHz), correlation-based speckle tracking yielded an accuracy of less than 10% error for axial tissue displacements of or above...
February 2018: IEEE Transactions on Medical Imaging
Ariel Botwin, Adam Engel, Christopher Wasyliw
Retinal detachment is an ophthalmologic emergency that requires immediate medical attention as it can potentially lead to permanent vision loss. The gold standard for diagnosing retinal detachment is dilated funduscopic exam. However, when this exam is not feasible such as in an emergency room setting or if visualization of the posterior portion of the eye is not possible due to vitreous hemorrhage or dense cataracts, ocular ultrasound provides a readily available and effective alternative. We present the sonographic appearance of chronic retinal detachment in a 24-year-old female with a longstanding history of poorly controlled type 1 diabetes who could not undergo dilated funduscopic exam due to intra-ocular hemorrhage...
February 5, 2018: Emergency Radiology
Keyton Clayson, Elias Pavlatos, Yanhui Ma, Jun Liu
The three-dimensional (3D) mechanical response of the cornea to intraocular pressure (IOP) elevation has not been previously reported. In this study, we use an ultrasound speckle tracking technique to measure the 3D displacements and strains within the central 5.5 mm of porcine corneas during the whole globe inflation. Inflation tests were performed on dextran-treated corneas (treated with a 10% dextran solution) and untreated corneas. The dextran-treated corneas showed an inflation response expected of a thin spherical shell, with through-thickness thinning and in-plane stretch, although the strain magnitudes exhibited a heterogeneous spatial distribution from the central to more peripheral cornea...
November 2017: Journal of Innovative Optical Health Sciences
Rupinder Chahal, Abhijit Anand Mohite, Heinrich Heimann, Atul Bansal
PURPOSE: We report a previously unrecognised mechanism of secondary glaucoma due to iridescent crystalline particles released from an irradiated iris melanoma. It masqueraded as refractory hypertensive uveitis following uncomplicated phacoemulsification. METHODS: A 58-year-old gentleman had an iris melanoma that underwent successful regression following irradiation with proton beam radiotherapy (PBRT). Three years later an uncomplicated phacoemulsification with intraocular lens implant was performed and subsequently the patient presented with apparently "refractory hypertensive uveitis"...
February 1, 2018: Journal of Glaucoma
Raul Martin
Current corneal assessment technologies make the process of corneal evaluation extremely fast and simple, and several devices and technologies show signs that help in identification of different diseases thereby, helping in diagnosis, management, and follow-up of patients. The purpose of this review is to present and update readers on the evaluation of cornea and ocular surface. This first part reviews a description of slit lamp biomicroscopy (SLB), endothelial specular microscopy, confocal microscopy, and ultrasound biomicroscopy examination techniques and the second part describes the corneal topography and tomography, providing up-to-date information on the clinical recommendations of these techniques in eye care practice...
February 2018: Indian Journal of Ophthalmology
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