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https://www.readbyqxmd.com/read/28926889/-clinical-research-progress-in-endothelial-keratoplasty
#1
Y Y Zhang, L X Xie
Endothelial keratoplasty (EK) has gradually replaced penetrating keratoplasty (PKP) and has become the main method for the treatment of endothelial dysfunction in developed countries in recent years. EK is safe and effective and can achieve good postoperative vision. The surgical techniques and postoperative effects have been improved continuously along with the development of microsurgical technology and surgical instruments. The EK surgeries mainly include Descemet stripping endothelial keratoplasty (DSEK), Descemet stripping automated endothelial keratoplasty (DSAEK), Descemet membrane endothelial keratoplasty (DMEK) and ultra-thin Descemet stripping automated endothelial keratoplasty (UT-DSAEK), which have different characteristics and advantages compared with PKP...
September 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28923499/descemet-membrane-endothelial-keratoplasty-safety-and-outcomes-a-report-by-the-american-academy-of-ophthalmology
#2
Sophie X Deng, W Barry Lee, Kristin M Hammersmith, Anthony N Kuo, Jennifer Y Li, Joanne F Shen, Mitchell P Weikert, Roni M Shtein
PURPOSE: To review the published literature on the safety and outcomes of Descemet membrane endothelial keratoplasty (DMEK) for the surgical treatment of corneal endothelial dysfunction. METHODS: Literature searches were last conducted in the PubMed and the Cochrane Library databases most recently in May 2017. The searches, which were limited to English-language abstracts, yielded 1085 articles. The panel reviewed the abstracts, and 47 were determined to be relevant to this assessment...
September 15, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28902856/effect-of-vital-dyes-on-human-corneal-endothelium-and-elasticity-of-descemet-s-membrane
#3
Isabell P Weber, Mrinal Rana, Peter B M Thomas, Ivan B Dimov, Kristian Franze, Madhavan S Rajan
The purpose of this study was to evaluate the effects of vital dyes on human Descemet's membranes (DMs) and endothelia. DMs of 25 human cadaveric corneas with research consent were treated with dyes routinely used in Descemet membrane endothelial keratoplasty (DMEK), 0.05% Trypan blue (TB) or a combination of 0.15% Trypan blue, 0.025% Brilliant blue and 4% Polyethylene glycol (commercial name Membrane Blue Dual; MB). The effects of these two dyes on (i) endothelial cell viability, (ii) DM mechanical properties as assessed by atomic force microscopy, and iii) qualitative DM dye retention were tested for two varying exposure times (one or four minutes)...
2017: PloS One
https://www.readbyqxmd.com/read/28902013/-bubble-in-the-roll-technique-using-the-endoject-dmek-injector-influence-of-the-air-bubble-on-endothelial-cell-loss
#4
Yasemin Akbaba, Julia M Weller, Kathrin Rössler, W John Armitage, Ursula Schlötzer-Schrehardt, Friedrich E Kruse, Theofilos Tourtas
PURPOSE: To evaluate the impact of the air bubble on endothelial cell loss using the "bubble-in-the-roll" technique during Descemet membrane endothelial keratoplasty (DMEK). METHODS: Twenty DMEK grafts not suitable for transplantation were manually prepared from organ-cultured corneoscleral discs and injected into culture media using the Endoject DMEK injector (Medicel AG, Wolfhalden, Switzerland). Based on the injection method, the grafts were divided into 2 groups: In group A (n = 10), a small air bubble was placed inside the graft roll while it was in the injector...
September 8, 2017: Cornea
https://www.readbyqxmd.com/read/28872520/descemet-membrane-endothelial-keratoplasty-patch-for-persistent-corneal-hydrops
#5
Elmer Y Tu
PURPOSE: To report successful management of a case of persistent keratoconus-related hydrops with a Descemet membrane endothelial keratoplasty (DMEK) patch graft. METHODS: A case of corneal hydrops persisting for 7 months treated with DMEK was identified. The following information was collected: demographic data, surgical indications, clinical course, diagnostic tests, and clinical outcome. RESULTS: A 55-year-old patient with an established diagnosis of keratoconus was followed for 7 months without improvement in his acute corneal hydrops...
August 31, 2017: Cornea
https://www.readbyqxmd.com/read/28837528/minimizing-graft-preparation-failure-in-descemet-membrane-endothelial-keratoplasty
#6
Eitan Livny, Esther A Groeneveld-van Beek, Jessica T Lie, Kristin M Mangundap, Marieke Bruinsma, Rénuka S Birbal, Jacqueline van der Wees, Gerrit R J Melles
PURPOSE: To report the failure rate of 2 graft preparation techniques for Descemet membrane endothelial keratoplasty (DMEK) and to evaluate how to minimize graft preparation failure. METHODS: Retrospective, nonrandomized study at an eye bank specialized in graft preparation for lamellar keratoplasty. For 1416 donor corneas, the DMEK graft preparation failure rate was evaluated for 2 different techniques, technique I: "Standardized traditional technique" (n = 341) and technique II: "Standardized no-touch technique" (n = 933), and for grafts that were converted from technique II to technique I during preparation (n = 142)...
August 23, 2017: Cornea
https://www.readbyqxmd.com/read/28837527/prestained-and-preloaded-dmek-grafts-an-evaluation-of-tissue-quality-and-stain-retention
#7
Dorian A Zeidenweber, Khoa D Tran, Christopher S Sales, Stephen W Wehrer, Michael D Straiko, Mark A Terry
PURPOSE: To examine endothelial cell damage and stain retention of prestained preloaded Descemet membrane endothelial keratoplasty (DMEK) grafts. METHODS: DMEK grafts were stained with trypan blue or left unstained before loading into a Straiko modified Jones tube. A protocol to stain preloaded grafts inside the modified Jones tube and resulting cell loss was also examined. Endothelial cell loss was determined by vital dye staining after 3 days of cold storage and compared between the 3 groups...
August 23, 2017: Cornea
https://www.readbyqxmd.com/read/28835226/intraocular-lens-power-calculation-using-standard-formulas-and-ray-tracing-after-dmek-in-patients-with-fuchs-endothelial-dystrophy
#8
Maged Alnawaiseh, Lars Zumhagen, André Rosentreter, Nicole Eter
BACKGROUND: The study presented here aims to optimize the accuracy of intraocular lens (IOL) power calculations in patients after DMEK by evaluation of the impact of the altered anterior/posterior corneal curvature relationship. METHODS: Scheimpflug-based Oculus Pentacam imaging was performed after DMEK surgery for Fuchs endothelial dystrophy. The IOL power was calculated for all patients by ray tracing, aiming for postoperative emmetropia. We also performed the IOL calculation using four third-generation formulas (SRK-T, Hoffer-Q, Holladay-1 and Haigis)...
August 23, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28834814/systematic-review-and-meta-analysis-of-clinical-outcomes-of-descemet-membrane-endothelial-keratoplasty-versus-descemet-stripping-endothelial-keratoplasty-descemet-stripping-automated-endothelial-keratoplasty
#9
Abhimanyu Singh, Mehran Zarei-Ghanavati, Venkata Avadhanam, Christopher Liu
PURPOSE: To review and compare the published reports of Descemet membrane endothelial keratoplasty (DMEK) and Descemet stripping endothelial keratoplasty/Descemet stripping automated endothelial keratoplasty (DSEK/DSAEK) procedures with regard to endothelial cell density/loss, best spectacle-corrected visual acuity, central corneal thickness, subjective outcomes (patient's reported satisfaction/preference), and postoperative complications. METHODS: A thorough search was conducted in the databases including AMED, EMBASE, Cochrane Database of Systematic Reviews, and MEDLINE without date restrictions...
August 22, 2017: Cornea
https://www.readbyqxmd.com/read/28830376/hydrophilic-intraocular-lens-opacification-after-posterior-lamellar-keratoplasty-a-material-analysis-with-special-reference-to-optical-quality-assessment
#10
Bert C Giers, Tamer Tandogan, Gerd U Auffarth, Chul Y Choi, Florian N Auerbach, Saadettin Sel, Christian Mayer, Ramin Khoramnia
BACKGROUND: Laboratory analysis and optical quality assessment of explanted hydrophilic intraocular lenses (IOLs) with clinically significant opacification after posterior lamellar keratoplasty (DMEK and DSAEK). METHODS: Thirteen opacified IOLs after posterior lamellar keratoplasty, 8 after descemet stripping automated endothelial keratoplasty (DSAEK), 3 after descemet membrane endothelial keratoplasty (DMEK) and 2 after both DSAEK and DMEK were analysed in our laboratory...
August 22, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28820794/anterior-chamber-gas-fill-after-dmek
#11
Javier Cabrerizo, Mark Alberti
No abstract text is available yet for this article.
October 2017: Cornea
https://www.readbyqxmd.com/read/28782549/a-review-of-the-evidence-for-in-vivo-corneal-endothelial-regeneration
#12
REVIEW
Bert Van den Bogerd, Sorcha Ní Dhubhghaill, Carina Koppen, Marie-José Tassignon, Nadia Zakaria
Human corneal endothelium has long been thought to be a non-mitotic cell layer with no endogenous reparative potential. Pathologies that damage endothelial function result in corneal decompensation and, if untreated, blindness. The mainstay of treatment involves partial or complete corneal replacement, amounting to 40% of all corneal transplants performed worldwide. We summarize the case reports describing complications post-operatively in the form of (sub)total graft detachment and those resulting in post-operative bare stroma...
August 3, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28761565/first-reported-case-of-donor-related-candida-endophthalmitis-after-descemet-membrane-endothelial-keratoplasty
#13
Matthew Thompson, David Carli
PURPOSE: To report the first case of Candida donor to host transmission following descemet membrane endothelial keratoplasty (DMEK). METHODS: A retrospective case report. RESULTS: A patient underwent uneventful DMEK. Following surgery the donor rim was culture positive for Candida. The patient developed fungal endophthalmitis that was treated medically with multiple injections of voriconazole and amphotericin. Medical treatment was unable to clear the infection and removal of the donor material was required...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28759902/-complications-of-dmekeratoplasty-avoid-recognize-and-treat
#14
Björn O Bachmann, Silvia A Schrittenlocher, Friederike Schaub, Sebastian Siebelmann, Mario Matthaei, Claus Cursiefen
Descemet membrane endothelial keratoplasty (DMEK) has evolved into a routine surgical procedure for posterior lamellar keratoplasty. After its introduction more than 10 years ago, several modifications in grafting technique and postoperative treatment regimen helped to improve its safety and reproducibility. Although DMEK offers faster and better improvements in visual acuity, as well as less graft rejections when compared to Descemet's stripping (automated) endothelial keratoplasty (DS[A]EK), difficulties when implementing this technique hamper the widespread use in many areas...
July 31, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28749899/effect-of-donor-and-recipient-diabetes-status-on-descemet-membrane-endothelial-keratoplasty-adherence-and-survival
#15
Marianne O Price, Marek Lisek, Matthew T Feng, Francis W Price
PURPOSE: To evaluate whether donor and/or recipient diabetes status affects the outcomes of Descemet membrane endothelial keratoplasty (DMEK). METHODS: A consecutive, single-center DMEK case series was reviewed. The outcome measures were success of surgeon tissue preparation, air reinjection rate, Kaplan-Meier 4-year graft replacement/failure rate for any reason, and endothelial cell loss. RESULTS: The donor had a history of diabetes in 504 of 1791 cases (28%) and the recipient in 14%...
October 2017: Cornea
https://www.readbyqxmd.com/read/28749896/elimination-of-anterior-corneal-steepening-with-descemet-membrane-endothelial-keratoplasty-in-a-patient-with-fuchs-dystrophy-and-keratoconus-implications-for-iol-calculation
#16
Reena Gupta, Ruta Kinderyte, Deborah S Jacobs, Ula V Jurkunas
PURPOSE: To report a case of coexistent Fuchs endothelial corneal dystrophy (FECD) and keratoconus (KCN) in which there was normalization of corneal topography after Descemet membrane endothelial keratoplasty (DMEK). METHODS: Retrospective medical record review. RESULTS: Preoperative findings revealed a best-corrected visual acuity of 20/40 with -1.00 - 2.50 × 147, topographic maximum keratometry of 50.8 D with inferior steeping, and confluent guttae in the left eye...
October 2017: Cornea
https://www.readbyqxmd.com/read/28742620/comparison-of-5-sulfur-hexafluoride-versus-100-air-tamponade-in-descemet-membrane-endothelial-keratoplasty
#17
Paraskevas Ampazas, Konstantinos Droutsas, Eleftherios Giallouros, Frank M Schroeder, Walter Sekundo
PURPOSE: To compare the rebubbling rate and clinical outcomes of Descemet membrane endothelial keratoplasty (DMEK) with 5% sulfur hexafluoride (SF6) gas versus 100% air as a tamponade for graft attachment. METHODS: Retrospective, comparative, interventional case series including 368 consecutive pseudophakic eyes with Fuchs endothelial dystrophy or pseudophakic bullous keratopathy that underwent DMEK in a tertiary referral center between October 2010 and August 2015 using either air (group 1, 191 eyes) or 5% SF6 (group 2, 177 eyes) as a tamponade...
October 2017: Cornea
https://www.readbyqxmd.com/read/28739402/graft-detachment-and-re-bubbling-rate-in-descemet-membrane-endothelial-keratoplasty
#18
REVIEW
Mohit Parekh, Pia Leon, Alessandro Ruzza, Davide Borroni, Stefano Ferrari, Diego Ponzin, Vito Romano
Descemet Membrane Endothelial Keratoplasty (DMEK) is a selective replacement of dysfunctional endothelium with healthy donor Descemet's membrane and endothelium. Although the donor preparation and surgical methods still remain a challenge, DMEK is gaining popularity in terms of early rehabilitation and visual outcomes. New and improved donor preparation techniques like pre-stripped DMEK tissues are taken up rapidly due to less manipulation that is required in the surgical theatre. Donor graft delivery in the recipient eye has also been improved due to new products like pre-stripped and pre-loaded membranes...
July 21, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28728288/-descemet-s-membrane-endothelial-keratoplasty-for-treatment-of-patients-with-corneal-endothelial-decompensation
#19
T Huang, C Ouyang, J Zhan, L Jiang
Objective: To evaluate the clinical outcomes of Descemet's membrane endothelial keratoplasty (DMEK) for treatment of patients with corneal endothelial decompensation in China. Methods: Interventional case series. Ten patients (10 eyes) with the diagnosis of corneal endothelial decompensation received DMEK during July 2016 and September 2016 in Zhongshan Ophthalmic Center. Descemet's membrane of the donor tissue was carefully stripped from the underlying stroma manually and cut with a 7.75- or 8.0-mm-diameter donor punch...
July 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28726355/combined-cataract-dsek-dmek-changing-expectations
#20
Francis W Price, Marianne O Price
Endothelial keratoplasty (EK) has revolutionized corneal transplant surgery by providing rapid visual recovery and improved visual outcomes. In parts of the world with Fuchs endothelial dystrophy, many patients may present with both cataracts and corneal degeneration requiring surgery. Other forms of endothelial decompensation may also present with cataracts. The staging or combination of transplant surgery and cataract surgery depend on both the abilities of the surgeon and the surgical techniques being considered...
July 2017: Asia-Pacific Journal of Ophthalmology
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