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Ophthalmic ultrasound

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https://www.readbyqxmd.com/read/28488075/effects-of-phacoemulsification-with-versus-without-viscoelastic-devices-on-surgical-outcomes
#1
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/28440860/doppler-ultrasonographic-measurement-of-short-term-effects-of-valsalva-maneuver-on-retrobulbar-blood-flow
#2
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/28358768/impact-of-ophthalmic-surgeon-experience-on-early-postoperative-central-corneal-thickness-after-cataract-surgery
#3
Louis Lhuillier, Anne L Jeancolas, Laurie Renaudin, Christophe Goetz, François Ameloot, Shanour Premy, Nadia Ouamara, Jean M Perone
PURPOSE: To assess the impact of surgeon experience on early postoperative central corneal thickness (CCT) in eyes that have undergone phacoemulsification-based cataract surgery. METHODS: One hundred sixty eyes underwent phacoemulsification-based cataract surgery performed by an experienced surgeon (n = 110; senior group) or a surgically less experienced ophthalmic assistant (n = 50; junior group), using the divide-and-conquer or tilt-and-tumble technique for cataractous lens extraction...
May 2017: Cornea
https://www.readbyqxmd.com/read/28317673/effect-of-balanced-phacoemulsification-tip-on-the-outcomes-of-torsional-phacoemulsification-using-an-active-fluidics%C3%A2-system
#4
Sudarshan Khokhar, Neelima Aron, Sagnik Sen, Ganesh Pillay, Esha Agarwal
PURPOSE: To compare the outcomes of torsional phacoemulsification with a new balanced tip (Intrepid) and a conventional tip (Kelman) using a single active-fluidics torsional phacoemulsification machine (Centurion). SETTING: Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India. DESIGN: Prospective comparative case-control study. METHODS: Patients with senile cataract had torsional phacoemulsification with the Kelman conventional tip or the new Intrepid balanced tip using the active-fluidics torsional machine...
January 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28302178/laser-peripheral-iridotomy-versus-laser-peripheral-iridotomy-plus-laser-peripheral-iridoplasty-in-the-treatment-of-multi-mechanism-angle-closure-study-protocol-for-a-randomized-controlled-trial
#5
Shida Chen, Jianhua Lv, Sujie Fan, Hong Zhang, Lin Xie, Ling Xu, Bing Jiang, Huipin Yuan, Yuanbo Liang, Shuning Li, Pingyan Chen, Xiulan Zhang, Ningli Wang
BACKGROUND: China has the largest burden of primary angle-closure glaucoma (PACG) worldwide. The mechanism of the angle closure is complex and includes pupillary block and non-pupillary block. Currently, opinion is that laser peripheral iridotomy (LPI) alone is not sufficient to prevent disease progression. Laser peripheral iridoplasty (LPIP) is an alternative and effective way of widening the angle recess in eyes that are affected by primary angle closure (PAC). However, it is not known if greater benefit would be achieved using LPI plus LPIP for PAC with multiple mechanisms (MAC)...
March 17, 2017: Trials
https://www.readbyqxmd.com/read/28294507/exophthalmos-due-to-sterile-neutrophilic-dermatosis-in-a-dog
#6
Emily K Sharpe, Jessica M Meekins, Mary Bagladi-Swanson, Amy J Rankin
An 8-year-old castrated male Bichon Frise was presented to the Kansas State University Veterinary Health Center for evaluation of unilateral right-sided exophthalmos, suspected secondary to a retrobulbar abscess. The dog had acutely developed right-sided periorbital swelling, exophthalmos with pain on retropulsion, as well as multiple cutaneous exudative plaques on the feet and tail base. On ophthalmic examination, the dog also exhibited mild left-sided exophthalmos with decreased, nonpainful retropulsion. Orbital ultrasound and CT were performed to evaluate the extent of bilateral orbital disease...
March 14, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28291455/measuring-hemodynamic-changes-in-the-ophthalmic-artery-during-applied-force-for-noninvasive-intracranial-pressure-monitoring-test-results-in-a-porcine-model
#7
Max Twedt, Chase Pfeifer, William Thorell, Greg Bashford
Possible traumatic brain injury victims would greatly benefit from a handheld, noninvasive intracranial pressure (ICP) monitoring tool, which a medic could operate in a remote area. Such a device would also benefit the transport of injured soldiers during en route medical care and critical care air transport. This study demonstrates the use of noninvasive blood flow measurements in the eye by ultrasound as a proxy for ICP. ICP was artificially raised in a porcine model and resultant blood flow change in the ophthalmic artery was measured...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28275423/in-vivo-imaging-of-ocular-blood-flow-using-high-speed-ultrasound
#8
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
#9
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/28260856/measurement-of-peripapillary-retinal-nerve-fiber-layer-thickness-and-macular-thickness-in-anisometropia-using-spectral-domain-optical-coherence-tomography-a-prospective-study
#10
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/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/28114163/doppler-ultrasonography-of-the-central-retinal-vessels-in-children-with-brain-death
#12
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...
March 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28074538/ultrasound-biomicroscopy-and-tonometry-in-ophthalmologically-normal-pigeon-eyes
#13
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
#14
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
#15
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 videoendoscopy in visualizing and hence prognosticating the visual outcomes in such eyes. DESIGN: Prospective, noncomparative, consecutive interventional case series. METHODS: This study included 64 eyes of 64 patients with corneal opacification who underwent a diagnostic ophthalmic endoscopy procedure from March 2014 to May 2016...
April 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28002851/prenatal-ultrasonographic-diagnosis-of-cataract-in-utero-manifestations-of-cryptic-disease
#16
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
#17
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...
April 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27930421/persistent-asymmetric-optic-disc-swelling-after-long-duration-space-flight-implications-for-pathogenesis
#18
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...
June 2017: 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
#19
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
#20
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
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