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https://www.readbyqxmd.com/read/29453727/floating-flap-of-internal-limiting-membrane-in-myopic-macular-hole-surgery
#1
Kenji Yamashiro, Eri Kinoshita-Nakano, Toru Ota, Yoko Jingami, Isao Nakata, Hisako Hayashi
PURPOSE: To evaluate the surgical results of macular hole (MH) in patients with high myopia treated with pars plana vitrectomy (PPV) leaving the internal limiting membrane (ILM) flap floating in vitreous fluid at the edge of the MH. METHODS: Nine highly myopic eyes with MH of nine consecutive patients who underwent PPV were retrospectively evaluated. Three eyes were accompanied by retinal detachment (RD). ILM peeling was performed around the MH and some part of the ILM flap was left attached to the edge of the MH...
February 16, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29443363/sheets-glide-assisted-intraocular-placement-of-the-argus-ii-retinal-prosthesis
#2
Avni P Finn, Lejla Vajzovic
BACKGROUND AND OBJECTIVE: As an increasing number of vitreoretinal surgeons are implanting retinal prosthesis devices, the need to share surgical techniques to ease implantation in challenging scenarios grows. The authors share a technique to aide in overcoming a challenge associated with uveal prolapse in a patient undergoing Argus II retinal prosthesis (Second Sight Medical Products, Sylmar, CA) implantation. PATIENTS AND METHODS: A surgical technique is discussed and demonstrated using a video (Video available at www...
February 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29443358/microscope-integrated-intraoperative-ultrahigh-speed-swept-source-optical-coherence-tomography-for-widefield-retinal-and-anterior-segment-imaging
#3
Chen D Lu, Nadia K Waheed, Andre Witkin, Caroline R Baumal, Jonathan J Liu, Benjamin Potsaid, Anthony Joseph, Vijaysekhar Jayaraman, Alex Cable, Kinpui Chan, Jay S Duker, James G Fujimoto
BACKGROUND AND OBJECTIVE: To demonstrate the feasibility of retinal and anterior segment intraoperative widefield imaging using an ultrahigh-speed, swept-source optical coherence tomography (SS-OCT) surgical microscope attachment. PATIENTS AND METHODS: A prototype post-objective SS-OCT using a 1,050-nm wavelength, 400 kHz A-scan rate, vertical cavity surface-emitting laser (VCSEL) light source was integrated to a commercial ophthalmic surgical microscope after the objective...
February 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29439268/posterior-hyaloid-dissection-let-s-make-it-easy-with-blue
#4
Laura Sararols, Karim Bañon, Gabriel Londoño, Miguel Castilla, Mercé Guarro
PURPOSE: Our aim is to present in this online supplementa ry video (see www.karger.com/doi/10.1159/000486348) an easy new surgical technique using blue dye to dissect the posterior hyaloid when performing pars plana vitrectomy. PROCEDURES: Dual-Blue stain is injected in vitreous cavity just after central vitrectomy is performed. The distribution of the blue stain will allow us to know if there is a posterior vitreous detachment or not ("blue lake fashion" or "blue jelly fashion," respectively) and as an excellent visualization of the vitreous fibers is accomplished, dissection of the posterior hyaloid can be performed without difficulty...
February 13, 2018: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/29426448/the-toronto-experience-with-the-argus-ii-retinal-prosthesis-new-technology-new-hope-for-patients
#5
Robert G Devenyi, Joshua Manusow, Beatrice E Patino, Mohamed Mongy, Michelle Markowitz, Samuel N Markowitz
Surgical restoration of vision with retinal prostheses is a new and developing technology currently available in a select group of countries, Canada among them. The Argus II retinal prosthesis is the first commercially available device for restoration of vision in patients with Retinitis Pigmentosa or with similar retinal pathology who still have minimal residual native vision. The surgery is complex and requires training however it is within the abilities of any experienced retina surgeon. Surgical experience builds up with each case and in our patients length of surgery constantly went down...
February 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/29425799/vancomycin-associated-hemorrhagic-occlusive-retinal-vasculitis-a-clinical-pathophysiological-analysis
#6
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
https://www.readbyqxmd.com/read/29417735/fetal-bovine-serum-can-reduce-toxicity-of-indocyanine-green-brilliant-blue-g-and-trypan-blue-in-arpe-19-cellular-model-that-suggests-new-surgical-staining-protocols-for-internal-limiting-membrane-peeling-procedure
#7
Yu-Yi Lin, Jorn-Hon Liu, Yin Chang
BACKGROUND: To investigate and compare the cytotoxicity of indocyanine green (ICG), brilliant blue G (BBG) and trypan blue (TB) using ARPE-19 cells that have been pre-treated/post- treated with balanced salt solution (BSS) or fetal bovine serum (FBS). METHODS: The cultured human retina pigment epithelium (RPE) ARPE-19 cells were pre-treated/post-treated with BSS or FBS (represent the autologous serum in clinic) in parallel with cells being soaked with various concentrations of ICG, BBG, and TB...
February 8, 2018: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/29403592/management-of-retinal-diseases-in-pregnant-patients
#8
REVIEW
Julie M Rosenthal, Mark W Johnson
Pregnancy leads to significant changes in the body, which potentially affect the retina. Pregnancy can induce disease, such as that seen in hypertensive retinopathy and choroidopathy. It can cause exudative retinal detachments in the HELLP syndrome (hemolysis, elevated liver enzymes and low platelets), disseminated intravascular coagulation (DIC), and thrombotic thrombocytopenic purpura (TTP), and provoke arterial and venous retinal occlusive disease. Pregnancy may also exacerbate pre-existing retinal disease, such as idiopathic central serous chorioretinopathy (ICSC) and diabetic retinopathy...
January 2018: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29357285/a-model-for-investigating-developmental-eye-repair-in-xenopus-laevis
#9
Cindy X Kha, Hyunbae Son, Julia Lauper, Kelly Ai-Sun Tseng
Vertebrate eye development is complex and requires early interactions between neuroectoderm and surface ectoderm during embryogenesis. In the African clawed frog, Xenopus laevis, individual eye tissues such as the retina and lens can undergo regeneration. However, it has been reported that removal of either the specified eye field at the neurula stage or the eye during tadpole stage does not induce replacement. Here we describe a model for investigating Xenopus developmental eye repair. We found that tailbud embryos can readily regrow eyes after surgical removal of over 83% of the specified eye and lens tissues...
January 18, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29350687/intraocular-currents-bernoulli-s-principle-and-non-drainage-scleral-buckling-for-rhegmatogenous-retinal-detachment
#10
D Wong, Y K Chan, T Bek, I Wilson, E Stefánsson
For many years, it is not fully understood how non-drainage scleral buckling surgery brings about spontaneous reattachment of the detached retina when retinal breaks remain open at the end of surgery. Various explanations have been put forward, but none more interesting than the effect of fluid currents associated with eye movements. One such explanation involved the physics of the Bernoulli's principle. Daniel Bernoulli was an eighteenth century Swiss mathematician and he described an equation based on the conservation of energy...
January 19, 2018: Eye
https://www.readbyqxmd.com/read/29346239/factors-associated-with-development-of-dissociated-optic-nerve-fiber-layer-appearance-in-the-pioneer-intraoperative-optical-coherence-tomography-study
#11
Anne P Runkle, Sunil K Srivastava, Alex Yuan, Peter K Kaiser, Rishi P Singh, Jamie L Reese, Justis P Ehlers
PURPOSE: To assess the relationship of dissociated optic nerve fiber layer (DONFL) and intraoperative membrane-peeling dynamics as visualized using intraoperative optical coherence tomography (OCT), and to evaluate the functional implications of DONFL. METHODS: This was a post hoc analysis of eyes undergoing membrane peeling for vitreomacular interface disorders in the prospective PIONEER intraoperative OCT study. Retinal layer measurements in preincision and postpeel intraoperative OCT images were obtained...
January 16, 2018: Retina
https://www.readbyqxmd.com/read/29326854/macular-buckling-surgery-for-retinal-detachment-associated-with-macular-hole-in-high-myopia-eye
#12
Kenan Sönmez, Ali Keleş
A 68-year-old woman presented to our clinic with a 1-month history of central scotoma and visual loss in her right eye. The best corrected visual acuity (BCVA) was hand motion in her right eye. Fundus examination showed myopic chorioretinal degeneration in association with posterior staphyloma and the retina was slightly elevated throughout the macula. Optical coherence tomography (OCT) revealed retinal detachment involving the posterior pole with a macular hole and staphyloma. The patient underwent pars plana vitrectomy, internal limiting membrane peeling, macular buckling, and perfluoropropane gas tamponade...
December 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29311491/visual-evoked-potential-in-rabbits-eyes-with-subretinal-implantation-by-vitrectomy-of-okayama-university-type-retinal-prosthesis-oureptm
#13
Toshihiko Matsuo, Tetsuya Uchida, Koichiro Yamashita, Shigiko Takei, Daisuke Ido, Mamoru Tanaka, Masao Oguchi, Toshinori Furukawa
Okayama University-type retinal prosthesis (OURePTM) is a photoelectric dye-coupled polyethylene film which generates electric potential in response to light and stimulates nearby neurons. This study aims to test surgical feasibility for subretinal film implantation and to examine functional durability of films in subretinal space. Dye-coupled films were implanted subretinally by vitrectomy in the right eye of normal white rabbits: 8 rabbits for 1 month and 8 rabbits for 6 months. The implanted films were removed by vitrectomy in 4 of these 8 rabbits in 1-month or 6-month implantation group...
January 1, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29304266/small-gauge-endoscopy-guided-pneumatic-anterior-hyaloid-detachment-a-new-surgical-technique-for-combined-pars-plana-vitrectomy-and-pars-plana-glaucoma-drainage-implant
#14
Ali Dirani, Marina Ravagnani Ciongoli, Mark R Lesk, Flavio Rezende
BACKGROUND AND OBJECTIVE: Pars plana glaucoma drainage implant (GDI) occlusion is mainly related to entrapment of residual anterior vitreous gel in the implant. The aim of the present report is to describe a new surgical technique to induce pneumatic anterior hyaloid detachment in eyes with GDI. PATIENTS AND METHODS: This is a description of the surgical technique used to induce pneumatic anterior hyaloid detachment. RESULTS: The technique was used in two cases...
January 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29303907/macular-hole-hydrodissection-surgical-technique-for-the-treatment-of-persistent-chronic-and-large-macular-holes
#15
Tina Felfeli, Efrem D Mandelcorn
PURPOSE: To present a new technique, macular hole hydrodissection, that increases the likelihood of closure for challenging macular holes (MHs) with multiple risk factors. METHODS: A retrospective review of all consecutive eyes with idiopathic Stage 3 and 4 MHs that were either persistent (failed previous vitrectomy surgery), chronic (symptoms of central vision loss of ≥2 years or a clinical diagnosis for ≥1 year), and/or large (aperture diameter of ≥400 μm), having undergone the macular hole hydrodissection surgical technique between January 1, 2014, and May 1, 2017, from an institutional practice setting was conducted...
January 4, 2018: Retina
https://www.readbyqxmd.com/read/29298439/tips-tricks-and-advantages-of-27-g-vitrectomy
#16
Konstantinos Anastasilakis, Anna Mourgela, Dhmos Kaniouras, Konstantinos Moschou
PURPOSE: We present the advantages and technique variations of 27-G vitrectomy in a variety of surgical retina cases. METHODS: Patients with epiretinal membrane, retinal detachment, and proliferative diabetic retinopathy with vitreous hemorrhage and tractional detachments underwent 27-G vitrectomy. We present technique tricks, solutions to various problems and pitfalls, and the advantages of 27-G vitrectomy. RESULTS: Postoperative visual acuity improved significantly in all patients...
January 3, 2018: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/29276228/retinal-nerve-fiber-layer-defect-and-paracentral-scotoma-after-internal-limiting-membrane-peeling-with-a-nitinol-loop
#17
Ryo Matoba, Yuki Morizane, Shuhei Kimura, Shinji Toshima, Fumio Shiraga
Internal limiting membrane (ILM) peeling is an important maneuver in vitrectomy for macular holes (MHs). A nitinol loop is a surgical instrument designed to create an edge on the ILM and peel the ILM safely and consistently. The effect of using a nitinol loop for ILM peeling on the retina is not clear. We report here on a case of an idiopathic full-thickness MH in an adult woman, in whom retinal damage was revealed after her ILM was peeled using a nitinol loop.
December 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29251013/ultrastructure-of-neurovascular-changes-in-human-diabetic-retinopathy
#18
János Fehér, Samanta Taurone, Marialuisa Spoletini, Zsolt Biró, Balázs Varsányi, Gianluca Scuderi, Maria Patrizia Orlando, Rosaria Turchetta, Alessandra Micera, Marco Artico
The previous concept regarding diabetic retinopathy assigned a primary role to hyperglycemia-induced microvascular alterations, while neuronal and glial abnormalities were considered to be secondary to either ischemia or exudation. The aim of this study was to reveal the potential role of neuronal and glial cells in initial and advanced alterations of the retinopathy in human type 2 diabetes. Electron microscopy and histochemical studies were performed on 38 surgically removed human eyes (28 obtained from diabetic patients and 10 from non-diabetic patients)...
December 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/29233750/fibrin-hydrogels-as-a-xenofree-and-rapidly-degradable-support-for-transplantation-of-retinal-pigment-epithelium-monolayers
#19
Jarel K Gandhi, Zahid Manzar, Lori A Bachman, Cynthia Andrews-Pfannkoch, Travis Knudsen, Matthew Hill, Hannah Schmidt, Raymond Iezzi, Jose S Pulido, Alan D Marmorstein
Recent phase 1 trials of embryonic stem cell and induced pluripotent stem cell (iPSCs) derived RPE transplants for the treatment of macular degeneration have demonstrated the relative safety of this process. However, there is concern over clumping, thickening, folding, and wrinkling of the transplanted RPE. To deliver a flat RPE monolayer, current phase 1 trials are testing synthetic substrates for RPE transplantation. These substrates, however, cause localized inflammation and fibrosis in animal models due to long degradation times...
December 9, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29230977/scleral-buckling-using-a-non-contact-wide-angle-viewing-system-with-a-25-gauge-chandelier-endoilluminator
#20
Jaehyuck Jo, Byung Gil Moon, Joo Yong Lee
PURPOSE: To report the outcome of scleral buckling using a non-contact wide-angle viewing system with a 25-gauge chandelier endoilluminator. METHODS: Retrospective analyses of medical records were performed for 17 eyes of 16 patients with primary rhegmatogenous retinal detachment (RRD) without proliferative vitreoretinopathy who had undergone conventional scleral buckling with cryoretinopexy using the combination of a non-contact wide-angle viewing system and chandelier endoillumination...
December 2017: Korean Journal of Ophthalmology: KJO
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