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Descemet's membrane

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https://www.readbyqxmd.com/read/29346130/reply-management-of-descemet-membrane-detachment-after-forceps-birth-injury
#1
Jack S Parker, John S Parker, Gerrit R J Melles
No abstract text is available yet for this article.
January 17, 2018: Cornea
https://www.readbyqxmd.com/read/29343529/quarter-descemet-membrane-endothelial-keratoplasty-quarter-dmek-for-fuchs-endothelial-corneal-dystrophy-6-months-clinical-outcome
#2
Vasiliki Zygoura, Lamis Baydoun, Lisanne Ham, Vincent J A Bourgonje, Korine van Dijk, Jessica T Lie, Isabel Dapena, Silke Oellerich, Gerrit R J Melles
BACKGROUND/AIM: To assess the clinical outcome of the first series of Quarter-Descemet membrane endothelial keratoplasty (Quarter-DMEK), a potential hybrid technique between 'descemetorhexis only' and conventional, circular DMEK. METHODS: Prospective interventional case series at a tertiary referral centre. Twelve eyes of 12 patients with central Fuchs endothelial corneal dystrophy underwent Quarter-DMEK, that is, transplantation of one quadrant of a full-diameter DMEK graft, and were evaluated for best-corrected visual acuity (BCVA), endothelial cell density (ECD) and complications up to 6 months postoperatively...
January 17, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29339064/factors-associated-with-early-graft-detachment-in-primary-descemet-membrane-endothelial-keratoplasty
#3
Pia Leon, Mohit Parekh, Yoav Nahum, Michael Mimouni, Giuseppe Giannaccare, Laura Sapigni, Alessandro Ruzza, Massimo Busin
PURPOSE: To evaluate the risk factors for early graft detachment in Descemet Membrane Endothelial Keratoplasty (DMEK). DESIGN: Case-control Study. METHODS: ▪ PARTICIPANTS: 173 donor corneas and 173 eyes of the patients following DMEK or DMEK in combination with phacoemulsification and IOL implantation were included. INTERVENTION: Pre-stripped DMEK grafts were transplanted using pull-through technique. At the end of surgery, the anterior chamber was filled with air, which was removed 3 hours later only if pupillary block was suspected...
January 12, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29338061/feasibility-of-cell-based-therapy-combined-with-descemetorhexis-for-treating-fuchs-endothelial-corneal-dystrophy-in-rabbit-model
#4
Naoki Okumura, Daiki Matsumoto, Yuya Fukui, Masataka Teramoto, Hirofumi Imai, Tetta Kurosawa, Tomoki Shimada, Friedrich Kruse, Ursula Schlötzer-Schrehardt, Shigeru Kinoshita, Noriko Koizumi
Corneal transparency is maintained by the corneal endothelium through its pump and barrier function. Severe corneal endothelial damage results in dysregulation of water flow and eventually causes corneal haziness and deterioration of visual function. In 2013, we initiated clinical research of cell-based therapy for treating corneal decompensation. In that study, we removed an 8-mm diameter section of damaged corneal endothelium without removing Descemet's membrane (the basement membrane of the corneal endothelium) and then injected cultured human corneal endothelial cells (CECs) into the anterior chamber...
2018: PloS One
https://www.readbyqxmd.com/read/29329121/technique-for-preparing-ultrathin-and-nanothin-descemet-stripping-automated-endothelial-keratoplasty-tissue
#5
Albert Y Cheung, Joshua H Hou, Peter Bedard, Veronique Grimes, Natalie Buckman, Medi Eslani, Edward J Holland
PURPOSE: To describe and report outcomes of our single-pass microkeratome technique for preparation of ultrathin (UT, ≤100 μm) and nanothin (NT, ≤50 μm) Descemet stripping automated endothelial keratoplasty (DSAEK) grafts. METHODS: To prepare NT-DSAEK grafts, a pachymetry nomogram specific to each technician and individual microkeratome head was developed based on accumulated precut and postcut pachymetry data from previous DSAEK grafts. Mean graft thickness as well as precut and postcut endothelial cell counts (ECCs) of NT-DSAEK, UT-DSAEK, and Descemet membrane endothelial keratoplasty (DMEK) grafts between July 2015 and July 2017 were calculated and compared statistically...
January 11, 2018: Cornea
https://www.readbyqxmd.com/read/29323218/scanning-electron-microscopy-assessment-of-the-descemet-membrane-interface-during-dmek-graft-preparation
#6
Javier Cabrerizo, Thomas Forshaw, Clara Rodriguez-Aierbe, Jesus Garrido-Fierro
We set out to determine microscopic characteristics of the Descemet membrane interface during Descemet membrane endothelial keratoplasty (DMEK) graft preparation. Ten corneas were partially prepared, preserving half of the Descemet membrane attached to the stroma to enable visualisation of the Descemet-stroma interface. This tissue was prepared for viewing with a scanning electron microscope. The Descemet-stroma interface was categorised into three regions: centre, mid-periphery and periphery. We classified adhesions in these regions as either minor thread-like adhesions or major bridge-like adhesions with stromal detachments...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29315437/evaluation-of-femtosecond-laser-versus-manual-clear-corneal-incisions-in-cataract-surgery-using-spectral-domain-optical-coherence-tomography
#7
Xiaogang Wang, Zhe Zhang, Xiaoyan Li, Lisha Xie, Haining Zhang, Douglas D Koch, Li Wang, Suhua Zhang
PURPOSE: To investigate the wound healing changes of clear corneal incisions performed with a femtosecond laser or a steel bevel knife in cataract surgery using spectral-domain optical coherence tomography. METHODS: Prospectively, consecutive patients undergoing either femtosecond laser-assisted cataract surgery (femtosecond laser group) using the LenSx laser (Alcon Laboratories, Inc., Fort Worth, TX) or traditional cataract surgery using steel blades (control group) were enrolled...
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29309360/partitioning-an-artificial-anterior-chamber-with-a-latex-diaphragm-to-simulate-anterior-and-posterior-segment-pressure-dynamics-the-dmek-practice-stage-where-surgeons-can-rehearse-the-dmek-dance
#8
Christopher S Sáles, Michael D Straiko, Ana Alzaga Fernandez, Kelly Odell, Philip K Dye, Khoa D Tran
PURPOSE: To present a novel apparatus for simulating the anterior and posterior segment pressure dynamics involved in executing Descemet membrane endothelial keratoplasty (DMEK) surgery when using a chamber-shallowing technique. METHODS: An artificial anterior chamber (AAC), 18-mm trephine, latex glove, two 3-mL syringes, and one donor cornea comprising an intact corneoscleral cap from which a DMEK tissue was peeled and punched are required for the model. After making the corneal incisions with the corneoscleral cap mounted on the AAC in the usual fashion, the corneoscleral cap is remounted onto the dried AAC over an 18-mm latex diaphragm...
February 2018: Cornea
https://www.readbyqxmd.com/read/29300261/scheimpflug-densitometry-after-dmek-versus-dsaek-two-year-outcomes
#9
Konstantinos Droutsas, Apostolos Lazaridis, Eleftherios Giallouros, Georgios Kymionis, Klio Chatzistefanou, Walter Sekundo
PURPOSE: To compare the course of Scheimpflug corneal densitometry (CD) after Descemet membrane endothelial keratoplasty (DMEK) versus Descemet stripping automated endothelial keratoplasty (DSAEK). METHODS: Fifty-four DMEK and 25 DSAEK cases without previous corneal surgery, complicated intraoperative or postoperative course, or vision-limiting ocular comorbidities were included. Pseudophakic eyes of age-matched subjects were recruited as controls (n = 20). Scheimpflug CD of the optically relevant zones (0-2 and 2-6 mm), best-corrected visual acuity (BCVA), endothelial cell density, and central corneal thickness were evaluated preoperatively and at 3, 6, 12, and 24 months postoperatively...
January 3, 2018: Cornea
https://www.readbyqxmd.com/read/29298168/incidence-of-cystoid-macular-edema-after-descemet-membrane-endothelial-keratoplasty
#10
Viridiana Kocaba, Romain Mouchel, Jacques Fleury, Anne-Sophie Marty, Hélène Janin-Manificat, Delphine Maucort-Boulch, Carole Burillon
PURPOSE: The incidence of and risk factors for cystoid macular edema (CME) after Descemet membrane endothelial keratoplasty (DMEK) remain uncertain. This study examines the incidence of and risk factors for CME after DMEK. METHODS: This retrospective, single-center study included patients with no history of CME who had undergone DMEK. Patients were examined weekly for 1 month after surgery and at 3 and 6 months after surgery. Follow-up examinations included visual acuity (VA) assessment, pachymetry, anterior segment optical coherence tomography, biomicroscopy, intraocular pressure measurement, and fundoscopy...
January 2, 2018: Cornea
https://www.readbyqxmd.com/read/29296551/surgical-outcome-of-deep-anterior-lamellar-keratoplasty-with-air-assisted-manual-dissection-for-corneas-with-previous-inflammation-or-fibrosis
#11
Yi-Ju Ho, Cheng-Hsiu Wu, Hung-Chi Chen, Chin-Shi Hsiao, Yi-Jen Hsueh, David Hui-Kang Ma
PURPOSE: To report our experience in air-assisted manual dissection deep anterior lamellar keratoplasty (DALK) for the treatment of corneal scar with previous inflammation and fibrosis. MATERIALS AND METHODS: We retrospectively reviewed the medical history of 21 patients (male:female = 13:8 mean age 41.9 years old) with corneal pathology from previous infection and inflammation. Trephination diameter ranged from 7.0 to 8.0 mm, and the graft was oversized by 0.25-0...
October 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29279657/real-time-optical-coherence-tomography-incorporated-in-the-operating-microscope-during-cataract-surgery
#12
Mohammed A Almutlak, Turki Aloniazan, William May
A 55-year-old male presented with reduced vision due to senile cataract. The patient consented to undergo real-time intraoperative anterior segment-optical coherence tomography (AS-OCT) during phacoemulsification with intraocular lens (IOL) implantation. Images were captured at various points during the surgery. The use of AS-OCT incorporated into the surgical microscope was evaluated as an adjunct to cataract surgery. We were able to successfully evaluate, in real-time, wound architecture, the attachment of Descemet's membrane, the posterior capsule, and IOL position...
July 2017: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/29260096/an-unusual-case-of-acute-angle-closure-glaucoma-following-deep-anterior-lamellar-keratoplasty-using-the-big-bubble-technique
#13
Samir Jabbour, Adam Muzychuk, Younes Agoumi, Mona Harissi-Dagher
Purpose: To report the first case of acute angle closure due to a high-pressure Descemet membrane detachment following deep anterior lamellar keratoplasty (DALK) using the "big bubble" technique. Observations: A 25-year-old man underwent DALK surgery for keratoconus using the "big bubble" technique in which an air bubble is injected in deep stroma to promote dissection of underlying Descemet membrane from stroma. Surgery was uneventful and the patient was discharged home in good conditions...
September 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29260073/endothelial-keratoplasty-for-posterior-polymorphous-corneal-dystrophy-in-a-4-month-old-infant
#14
M Hermina Strungaru, Asim Ali, David Rootman, Kamiar Mireskandari
Purpose: To report a case of endothelial keratoplasties (EKs) performed in a 4 month old with a posterior polymorphous corneal dystrophy. Observations: A 4 month old infant underwent Descemet membrane endothelial keratoplasty (DMEK) for posterior polymorphous corneal dystrophy. The graft was found to be dislocated on day 5 post-operatively and an attempt to unfold the DMEK scroll and re-bubble was not successful. The patient was then treated successfully with bilateral Descemet stripping automated endothelial keratoplasty (DSAEK)...
September 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29242495/the-evolution-of-corneal-transplantation
#15
Tobias Röck, Johanna Landenberger, Matthias Bramkamp, Karl Ulrich Bartz-Schmidt, Daniel Röck
BACKGROUND The aim of this study was to investigate the evolution of surgical methods in and leading indications for corneal transplantation from 2005 to 2016. MATERIAL AND METHODS Data from the corneal graft waiting list and from all keratoplasties carried out between 2005 and 2016 at the University Eye Hospital Tübingen were retrospectively evaluated. RESULTS A total of 1259 keratoplasties were performed between 2005 and 2016 at the University Eye Hospital Tübingen. The most common surgical indications for corneal transplantation were Fuchs endothelial corneal dystrophy (45...
December 15, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29237925/corneal-endothelial-cell-loss-in-femtosecond-laser-assisted-descemet-s-stripping-automated-endothelial-keratoplasty-a-12-month-follow-up-study
#16
Yun Feng, Hong-Qiang Qu, Jing Ren, Philipp Prahs, Jing Hong
BACKGROUND: Descemet's stripping automated endothelial keratoplasty (DSAEK) surgery offers a more standardized approach and reliable method to create corneal grafts with an instrument such as a microkeratome. With the development of Descemet's membrane endothelial keratoplasty, an excellent clinical outcome is seen in the treatment of corneal endothelial dysfunctions, which indicates that thinner corneal graft results in better clinical outcome. With the recent development of the femtosecond laser, ultrathin corneal graft preparation has become possible...
December 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29234234/mini-descemet-membrane-stripping-m-dmes-in-patients-with-fuchs-endothelial-dystrophy-a-new-method
#17
George D Kymionis, Dimitrios A Liakopoulos, Michael A Grentzelos, Irini Naoumidi, Georgios A Kontadakis, Konstantinos I Tsoulnaras, Myrsini K Petrelli
We present two cases with focal corneal edema due to Fuchs' endothelial dystrophy that were successfully treated with mini Descemet membrane stripping (m-DMES) (diameter of 3-4 mm; at the area of preexisting focal corneal edema) without endothelial replacement during cataract surgery. Specular microscopy demonstrated Fuchs' endothelial dystrophy and histopathologic evaluation confirmed the diagnosis. Anterior segment optical coherence tomography and confocal microscopy were used for the evaluation of the corneal tissue recovery course after the surgical procedure...
October 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/29227339/comparison-of-sulfur-hexafluoride-sf6-and-air-tamponade-in-noniridectomized-descemet-membrane-endothelial-keratoplasty
#18
Adi Einan-Lifshitz, Nir Sorkin, Tanguy Boutin, Mahmood Showail, Armand Borovik, Farzad Jamshidi, Clara C Chan, David S Rootman
PURPOSE: To compare the efficacy and safety of 20% sulfur hexafluoride gas (SF6) and air tamponade in patients who underwent noniridectomized Descemet membrane endothelial keratoplasty (DMEK). METHODS: A retrospective chart review of patients who underwent DMEK with either air or SF6 tamponade: 41 eyes received air tamponade (group 1) and 41 received SF6 tamponade (group 2). Best spectacle-corrected visual acuity, endothelial cell density, and complications including graft detachment and elevated intraocular pressure were compared...
December 8, 2017: Cornea
https://www.readbyqxmd.com/read/29225985/late-onset-descemet-membrane-detachment-after-radial-keratotomy-resolved-with-medical-therapy
#19
P Rosetta, E F Legrottaglie, R Vinciguerra, P Vinciguerra
Purpose: To report a case of a Descemet membrane's (DM) detachment after radial keratotomy (RK). Methods: A patient (male) underwent RK (16 cuts) 20 years before referring to the Eye Center of Humanitas (Milan) for a progressive visual loss. The slit-lamp examination showed severe corneal stromal edema and a large DM detachment in the lower half of the cornea. Anterior segment optical coherence tomography (AS-OCT) and endothelial cells count confirmed DM detachment and endothelial cells damage...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/29218212/heads-up-descemet-membrane-endothelial-keratoplasty-performed-using-a-3d-visualization-system
#20
Virgilio Galvis, Ruben D Berrospi, Juan D Arias, Alejandro Tello, Julio C Bernal
A 68-year-old female underwent Descemet membrane endothelial keratoplasty (DMEK) in her right eye using a 3D visualization system with the surgeon looking directly to a digital screen instead of through the eyepieces of the surgical microscope. The procedure was uneventful. Five weeks after the surgery the DMEK graft was in good position and totally adhered, the cornea clear and uncorrected distance visual acuity 20/50. This is the first reported case of DMEK using 3D augmented reality visualization system...
November 2017: Journal of Surgical Case Reports
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