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Vitreo-retinal surgery

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https://www.readbyqxmd.com/read/28538613/acute-retinal-damage-after-using-a-toxic-perfluoro-octane-for-vitreo-retinal-surgery
#1
J Carlos Pastor, Rosa M Coco, Ivan Fernandez-Bueno, Maria L Alonso-Alonso, Jesús Medina, Aurelio Sanz-Arranz, Fernando Rull, Manuel J Gayoso, Antonio Dueñas, Maria T Garcia-Gutierrez, Lucia Gonzalez-Buendia, Santiago Delgado-Tirado, Emilio Abecia, Miguel Ruiz-Miguel, Miguel A Serrano, Jose M Ruiz-Moreno, Girish K Srivastava
PURPOSE: To describe a series of retinal acute toxicity cases with severe visual loss after intraocular use of a toxic perfluoro-octane (PFO). The clinical presentation is described, and the likely causes are analyzed. New biological methods for testing safety of intraocular medical devices are proposed. METHODS: Information regarding a series of eyes suffering acute severe events after intraocular use of a toxic PFO was analyzed. Four types of spectroscopy, nuclear magnetic resonance, and chromatography were used to identify the potential PFO contaminants...
June 2017: Retina
https://www.readbyqxmd.com/read/28427068/intravitreal-steroids-in-diabetic-macular-edema
#2
Rosangela Lattanzio, Maria Vittoria Cicinelli, Francesco Bandello
Over the past decade, great strides have been made in the management of diabetic macular edema (DME). Therapeutic alternatives now include focal/grid laser photocoagulation, vitreo-retinal surgery, and intraocular injection of anti-angiogenic and steroid molecules. Intravitreal administration of steroids represents a fundamental alternative for recalcitrant and naive eyes with DME, especially in those cases when anti-vascular endothelial growth factor (VEGF) agents are contraindicated or a treatment regimen with fewer intravitreal injections is required...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28258307/nutrition-for-diabetic-retinopathy-plummeting-the-inevitable-threat-of-diabetic-vision-loss
#3
REVIEW
Yashodhara Sharma, Sandeep Saxena, Arvind Mishra, Anita Saxena, Shankar Madhav Natu
Diabetic retinopathy (DR) is among the leading causes of preventable blindness. Hyperglycemia, hypertension, hyperlipidemia and anemia majorly predispose its pathogenesis. The current treatment modalities of DR include laser photocoagulation therapy, intravitreal corticosteroids, intravitreal anti-vascular endothelial growth factor (VEGF) agents and vitreo-retinal surgery which are costly, highly invasive, unproven for prolonged use and opted in advanced stages of DR. By then retina already encounters a vast damage...
March 3, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28121212/macular-hole-in-stargardt-disease-clinical-and-ultra-structural-observation
#4
Stanislao Rizzo, Dario Pasquale Mucciolo, Daniela Bacherini, Vittoria Murro, Lorenzo Vannozzi, Gianni Virgili, Daniele Bani, Andrea Sodi
PURPOSE: To report for the first time a case report of a Stargardt disease patient who developed a macular hole (MH) which was treated with a surgical approach. METHOD: Case report. RESULTS: After vitrectomy a complete closure of the MH was obtained and the best-corrected visual acuity remained stable. No complications were reported after one year of follow-up. An ultra-structural examination of the removed internal limiting membrane (ILM) and epiretinal membrane (ERM) was carried out under electron microscopy...
January 25, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/27990367/missed-retinal-breaks-in-rhegmatogenous-retinal-detachment
#5
Brijesh Takkar, Shorya Azad, Adarsh Shashni, Amar Pujari, Indrish Bhatia, Rajvardhan Azad
AIM: To evaluate the causes and associations of missed retinal breaks (MRBs) and posterior vitreous detachment (PVD) in patients with rhegmatogenous retinal detachment (RRD). METHODS: Case sheets of patients undergoing vitreo retinal surgery for RRD at a tertiary eye care centre were evaluated retrospectively. Out of the 378 records screened, 253 were included for analysis of MRBs and 191 patients were included for analysis of PVD, depending on the inclusion criteria...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27579460/perspective-of-ophthalmology-residents-in-the-united-states-about-residency-programs-and-competency-in-relation-to-the-international-council-of-ophthalmology-guidelines
#6
Nizar Saleh Abdelfattah, Ahmed E Radwan, Srinivas R Sadda
PURPOSE: To evaluate the perspective of ophthalmology residents in the US about their residency programs and compare the competency of residency programs to international competency levels set by the International Council of Ophthalmology (ICO). METHODS: A cross-sectional web-based survey extracted from the ICO published competency standards was sent to program directors of ophthalmology residency programs in the US to forward it to current PGY-3, 4 residents, and residency graduates from 2011 to 2014...
September 2016: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/27439781/clinical-and-microbiological-profile-of-non-tuberculous-mycobacterial-endophthalmitis-experience-in-a-tertiary-eye-care-centre-in-southern-india
#7
Remya Mareen Paulose, Joveeta Joseph, Raja Narayanan, Savitri Sharma
BACKGROUND: Endophthalmitis caused by non-tuberculous mycobacteria (NTM) is a rare condition seen after surgery and trauma. This study reports a retrospective, consecutive, non-comparative case series of 5 patients referred to L. V. Prasad Eye Institute, Hyderabad, and diagnosed with culture-proven NTM endophthalmitis between January 2004 and April 2015. Data collected included demographic information, presenting features, microbiology investigation, treatment course, and final visual outcome...
December 2016: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/27324930/-intraoperative-use-of-coherence-tomography-in-vitreoretinal-surgery
#8
Juan Abel Ramírez-Estudillo, Jorge Arturo Sánchez-Ramos, Carla Rocío Pérez-Montaño, Jesús Hernán González-Cortés
BACKGROUND: Optical coherence tomography is a useful tool in several diseases. Its intraoperative use with the intention of improving anatomical results has recently been described. PURPOSE: To determine the usefulness and safety of optical coherence tomography during pars plana vitrectomy for several vitreo-retinal diseases. MATERIAL AND METHODS: A prospective case series is reported, in which the decision that influenced the use of the optical coherence tomography imaging during pars plana vitrectomy is evaluated...
January 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/27231616/novel-microscope-integrated-stereoscopic-heads-up-display-for-intrasurgical-optical-coherence-tomography
#9
Liangbo Shen, Oscar Carrasco-Zevallos, Brenton Keller, Christian Viehland, Gar Waterman, Paul S Hahn, Anthony N Kuo, Cynthia A Toth, Joseph A Izatt
Intra-operative optical coherence tomography (OCT) requires a display technology which allows surgeons to visualize OCT data without disrupting surgery. Previous research and commercial intrasurgical OCT systems have integrated heads-up display (HUD) systems into surgical microscopes to provide monoscopic viewing of OCT data through one microscope ocular. To take full advantage of our previously reported real-time volumetric microscope-integrated OCT (4D MIOCT) system, we describe a stereoscopic HUD which projects a stereo pair of OCT volume renderings into both oculars simultaneously...
May 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27027299/surgical-treatment-for-diabetic-vitreoretinal-diseases-a-review
#10
REVIEW
Tarun Sharma, Angie Fong, Timothy Y Lai, Vincent Lee, Sudipta Das, Dennis Lam
Over the past four decades, advancements in surgical instrumentations and techniques have significantly improved the postoperative anatomical and visual outcomes of patients with various diabetic vitreoretinal diseases. In particular, surgical interventions for previously serious and untreatable blinding proliferative diabetic retinopathy can now be performed, with much better results. The advents of micro incisional vitrectomy system with better visualization system like binocular indirect ophthalmomicroscope and state-of-the-art instrumentation revolutionized the era of diabetic vitrectomy...
May 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/26991970/addressing-risk-factors-screening-and-preventative-treatment-for-diabetic-retinopathy-in-developing-countries-a-review
#11
REVIEW
Stephanie Lin, Pradeep Ramulu, Ecosse L Lamoureux, Charumathi Sabanayagam
The number of people with diabetic retinopathy (DR) has increased with the increasing prevalence of diabetes mellitus worldwide, especially in developing countries. In recent years, the successful implementation of public health programs in developed countries has been thought to contribute to decreases in blindness from DR. Developing countries, however, have not seen the same improvements, and their public health interventions still face significant challenges. In this review we describe the current state of public health approaches including risk factor control, screening and treatment techniques for DR in developing countries, and suggest recommendations...
May 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/26476212/evaluation-of-objective-vitritis-grading-method-using-optical-coherence-tomography-influence-of-phakic-status-and-previous-vitrectomy
#12
Javier Zarranz-Ventura, Pearse A Keane, Dawn A Sim, Victor Llorens, Adnan Tufail, Srinivas R Sadda, Andrew D Dick, Richard W Lee, Carlos Pavesio, Alastair K Denniston, Alfredo Adan
PURPOSE: To evaluate a proposed method for objective measurement of vitreous inflammation using a spectral-domain optical coherence tomography (SD OCT) device in a large cohort of uveitis eyes, including pseudophakic eyes and vitrectomized eyes. DESIGN: Retrospective, observational cohort study. METHODS: One hundred five uveitis eyes (105 patients) with different vitreous haze score grades according to standardized protocols and corresponding SD OCT images (Cirrus HD-OCT; Carl Zeiss Meditec, Dublin, California, USA) were included...
January 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/26366887/recent-progress-in-using-biomaterials-as-vitreous-substitutes
#13
REVIEW
Xinyi Su, Mein Jin Tan, Zibiao Li, Meihua Wong, Lakshminarayanan Rajamani, Gopal Lingam, Xian Jun Loh
Vitreous substitutes are crucial adjuncts during vitreo-retinal surgery for retinal diseases such as complicated retinal detachment, macular holes, complications of diabetic retinopathy, and ocular trauma involving posterior segment. In retinal detachment surgery, an internal tamponade agent is required to provide internal pressure for reattachment of the detached neurosensory retina. Current available options serve only as a temporary surgical adduct or short-term solution and are associated with inherent problems...
October 12, 2015: Biomacromolecules
https://www.readbyqxmd.com/read/26350534/controversies-in-anticoagulant-therapy-in-vitreo-retinal-surgery
#14
REVIEW
Andrzej Grzybowski, Konrad Kupidura-Majewski, Paulina Kupidura
The number of elderly patients using anticoagulant and antiplatelet treatment in prevention of thromboembolism has significantly increased in recent years. It was believed for many years that those patients may be at higher risk for hemorhages during ocular surgery. Different strategies were proposed to prevent these complications, including discontinuation of anticoagulants, dose reduction, or substitution with low molecular weight heparin. The objective of this work was to evaluate the results of studies presenting the results of vitreoretinal surgeries in patients continuing antiplatelet and/or anticoagulant treatment...
2015: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/25812991/pharmacologic-vitreolysis-with-ocriplasmin-rationale-for-use-and-therapeutic-potential-in-vitreo-retinal-disorders
#15
Matin Khoshnevis, J Sebag
With increased knowledge about the origins and pathophysiology of vitreo-retinal disorders—and, in particular, the central role of anomalous posterior vitreous detachment in vitreo-maculopathies—a paradigm shift from surgery to pharmacotherapy is taking place with the development of pharmacologic vitreolysis. The first approved agent for pharmacologic vitreolysis therapy is ocriplasmin, a truncated form of the nonspecific serine protease plasmin. Twelve studies comprise the current ocriplasmin clinical trial program, demonstrating the efficacy and safety of a single intravitreal injection of ocriplasmin for the treatment of patients with symptomatic vitreo-macular adhesion or vitreo-macular traction, including patients with macular holes...
April 2015: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/25812553/vitreo-retinal-relationship-and-post-operative-outcome-of-macular-hole-repair-in-eyes-with-high-myopia
#16
Li-Li Wu, Tzyy-Chang Ho, Chang-Hao Yang, Chung-May Yang
PURPOSE: To investigate the vitreoretinal relationship in eyes with full-thickness macular hole (FTMH) without retinal schisis or detachment. Eyes with and without high myopia were compared using slit-lamp biomicroscopy, optical coherence tomography (OCT), and intraoperative observations. METHODS: Clinical records of 34 consecutive cases of FTMH without schisis or detachment in highly myopic eyes (refractive error larger than -6.0 diopters or axial length >26 mm) were retrospectively reviewed...
January 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/25475713/a-distinct-vitreo-retinal-dystrophy-with-early-onset-cataract-from-recessive-kcnj13-mutations
#17
Arif O Khan, Carsten Bergmann, Christine Neuhaus, Hanno J Bolz
PURPOSE: To document a distinct vitreo-retinal dystrophy with early-onset cataract as related to recessive KCNJ13 mutations. METHODS: A retrospective case series (two patients from two families) Results: A 12-year-old Saudi Arabian girl with nystagmus since birth was referred because of recent decreased vision. Parents were first cousins and a younger sister had been diagnosed with retinal dystrophy. Examination revealed total white cataract in the right eye. In the left eye, there were posterior cortical lenticular opacities and an unusual retina fundus dystrophic appearance notable for fibrosis over the optic disc and clumped pigmentation...
March 2015: Ophthalmic Genetics
https://www.readbyqxmd.com/read/25216738/testing-the-effects-of-the-dye-acid-violet-17-on-retinal-function-for-an-intraocular-application-in-vitreo-retinal-surgery
#18
Aysegül Tura, Aizhan Alt, Christos Haritoglou, Carsten H Meyer, Toni Schneider, Salvatore Grisanti, Julia Lüke, Matthias Lüke
PURPOSE: To facilitate epiretinal or inner limiting membrane peeling, dyes like Indocyanine Green (ICG) as well as Trypan Blue (TB) were used so far. However, toxic effects on the retina were described for both dyes. The aim of our study was to investigate the effects of a novel vital dye Acid violet-17 (AV-17) on retinal histology and function to assess a possible application in vitreo-retinal surgery. METHODS: AV-17 was dissolved in a solvent with heavy water...
December 2014: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/24907965/idiopathic-epiretinal-membrane-in-young-patient-a-rare-case-presentation
#19
Raba Thapa, Govinda Paudyal
Epiretinal membrane is avascular fibrous tissue which is adhered to the internal layers of retina in the macular area. Patient may be asymptomatic or present with blurring of vision and metamorphopsia. The idiopathic Epiretinal Membrane is more often seen in elderly but it could be present in young patients in association with other vitreo-retinal diseases and following intraocular surgery. The idiopathic Eperetinal Membrane in young patients are rare. Here we present a thirty one year healthy women presented with idiopathic Epiretinal Membrane who gained full visual recovery following the pars plana vitrectomy, membrane peeling and gas for its rarity...
July 2013: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/24848390/23-gauge-sutureless-vitreo-retinal-surgery-for-superior-rhegmatogenous-retinal-detachment
#20
Shakir Zafar, Washoo Mal, Munira Shakir, Zeeshan Kamil, Syeda Aisha Bokhari, Syed Fawad Rizvi
OBJECTIVE: To determine the results of 23-gauge sutureless vitreo-retinal surgery for superior/supero-temporal rhegmatogenous retinal detachment (RRD). STUDY DESIGN: Quasi experimental study. PLACE AND DURATION OF STUDY: LRBT, Free Base Eye Hospital, Karachi, from January 2010 to December 2011. METHODOLOGY: Adult patients who underwent 23-gauge sutureless vitreo-retinal surgery along with use of Perfluoropropane (C3F8) gas as internal tamponading agent for fresh (upto 3 weeks) superior/supero-temporal RRD was reviewed...
May 2014: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
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