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Descemet's membrane

Lamis Baydoun, Fook Chang Lam, Sontje Schaal, Shugi Hsien, Silke Oellerich, Korine van Dijk, Gerrit R J Melles
PURPOSE: To assess aqueous flare as a measure of subclinical inflammation after Descemet membrane endothelial keratoplasty (DMEK) for Fuchs endothelial dystrophy. METHODS: In this prospective cross-sectional and longitudinal case series at a tertiary referral center, 173 DMEK eyes of 169 patients and 19 age-matched healthy control eyes were included. Aqueous flare [photon count per millisecond (ph/ms)] was assessed by laser flare photometry at 1 day, 1 week, and 1 month after DMEK in group I (evaluation of postsurgical blood-aqueous barrier recovery; n = 25) and on average 28 (±19) months (range, 3-86 months) after DMEK in group II (evaluation of long-term inflammation; n = 148)...
March 15, 2018: Cornea
Jessica M Skeie, Benjamin T Aldrich, Andrew S Goldstein, Gregory A Schmidt, Cynthia R Reed, Mark A Greiner
The objective of this study was to characterize the proteome of the corneal endothelial cell layer and its basement membrane (Descemet membrane) in humans with various severities of type II diabetes mellitus compared to controls, and identify differentially expressed proteins across a range of diabetic disease severities that may influence corneal endothelial cell health. Endothelium-Descemet membrane complex tissues were peeled from transplant suitable donor corneas. Protein fractions were isolated from each sample and subjected to multidimensional liquid chromatography and tandem mass spectrometry...
2018: PloS One
Dilek D Altınörs, Leyla Asena
OBJECTIVES: We aimed to report the clinical outcomes of Descemet membrane endothelial keratoplasty in our first year of experience. MATERIALS AND METHODS: Patients who underwent Descemet membrane endothelial keratoplasty at the Baskent University Faculty of Medicine, Department of Ophthalmology, between 2015 and 2016 were included in the study. Patient demographics, cause of endothelial dysfunction, best-corrected visual acuity, central corneal thickness, graft survival, follow-up duration, and intraoperative and postoperative complications were recorded...
March 2018: Experimental and Clinical Transplantation
Jonathan W Crews, Marianne O Price, Jeferson Lautert, Matthew T Feng, Francis W Price
PURPOSE: To identify whether intraoperative hyphema from the peripheral iridotomy during Descemet membrane endothelial keratoplasty (DMEK) is associated with anticoagulant or antiplatelet use, age, combined phacoemulsification, or adverse outcomes. SETTING: Price Vision Group, Indianapolis, Indiana, USA. DESIGN: Retrospective case series. METHODS: Data were obtained from consecutive DMEK cases with an intraoperative iridotomy from July 2015 through July 2016...
March 7, 2018: Journal of Cataract and Refractive Surgery
Kostadin Rolev, Dominic G OʼDonovan, Peter Coussons, Linda King, Madhavan S Rajan
PURPOSE: To test the feasibility of a cell therapy approach to treat corneal endothelial (CE) disorders using an in vitro model of human corneal decompensation. METHODS: A CE decompensation model was established by removal of the Descemet membrane/endothelium complex from cadaveric human corneas in an air interface organ culture system (group 2) and compared with normal corneas (group 1). The posterior stroma of decompensated corneas was seeded with immortalized human corneal endothelial cells (HCEC-12) in group 3 and passage 0 primary human CE cells in group 4 corneas...
March 6, 2018: Cornea
Nir Sorkin, Mahmood Showail, Adi Einan-Lifshitz, Tanguy Boutin, Armand Borovik, Mohammad Kreimei, Amir Rosenblatt, Clara C Chan, David S Rootman
PURPOSE: To analyze the outcomes of Descemet membrane endothelial keratoplasty (DMEK) in eyes with previous Descemet stripping automated endothelial keratoplasty (DSAEK). METHODS: This retrospective interventional case series included 26 eyes (26 patients) that underwent DMEK to replace a previous DSAEK graft with at least 6 months of follow-up. The outcome measures were indications for surgery, best spectacle-corrected visual acuity (BSCVA), endothelial cell density, rebubbling rate, rejection, and failure...
March 6, 2018: Cornea
Mohit Parekh, Davide Borroni, Alessandro Ruzza, Hannah J Levis, Stefano Ferrari, Diego Ponzin, Vito Romano
PURPOSE: To compare different Descemet membrane endothelial keratoplasty (DMEK) graft preparation methods. METHODS: Stripping from the trabecular meshwork (M1) using epithelial spatula; stripping by scoring the peripheral endothelium (M2) using Sinskey hook; stripping by punch method (M3) using donor trephine; Submerged hydro-separation (M4); and pneumatic dissection method (M5) were evaluated. Preparation time, costs, endothelial cell loss (ECL) postpreparation, cell death and morphology were compared...
March 9, 2018: Acta Ophthalmologica
Yana Fu, Wuying Zhou, Wei Li, Xiaolei Lin, Qi Dai
RATIONALE: The incidence of cornea disorders after laser peripheral iridotomy (LPI) is extremely low. However, cornea Descemet membrane detachment (DMD) combined with corneal decompensation after LPI could still occur. PATIENT CONCERNS: A 69-year-old Chinese woman presented with persistent widespread corneal edema and inferior bullous lesions in her right eye for half a year. She had undergone LPI in both eyes 10 years ago for a prophylactic treatment. The patient received a detailed examination of vivo corneal confocal microscopy and sept-source optical coherence tomography (SS-OCT)...
March 2018: Medicine (Baltimore)
Laura Macovei, Ioana Gobej
We report the case of a 69-year-old female with Fuchs endothelial dystrophy and posterior chamber in-the-bag intraocular lens, whom we treated with DMEK surgical technique. We encountered difficulties both during obtaining the endothelium from the young donor and during the intraocular unrolling and its application on the stroma. We evaluated both preoperative and postoperative the following parameters: visual acuity, slit lamp, and optical coherence tomography appearance of the cornea, corneal thickness, intraocular pressure, endothelial cell density...
October 2017: Romanian Journal of Ophthalmology
Fatema Asi, Georgia Milioti, Berthold Seitz
We report a case of corneal decompensation caused by recurrent herpetic endotheliitis that was treated successfully with Descemet membrane endothelial keratoplasty (DMEK). A 62-year-old woman presented with a history of recurrent herpetic infections in the right cornea. After topical and systemic treatment with antivirals and steroids for 5 months, DMEK combined with cataract surgery was performed. Two weeks after DMEK, the corrected distance visual acuity (CDVA) in the affected eye was 0.3 (20/60). One year postoperatively, the CDVA was 1...
January 2018: Journal of Cataract and Refractive Surgery
Mohit Parekh, Alessandro Ruzza, Vito Romano, Elisa Favaro, Mattia Baruzzo, Gianni Salvalaio, Andrea Grassetto, Stefano Ferrari, Diego Ponzin
PURPOSE: To investigate the learning curve of Descemet membrane endothelial keratoplasty (DMEK) graft preparation in an eye bank. METHODS: Four operators prepared 645 DMEK grafts using the stripping technique between 2014 and 2017 at the Veneto Eye Bank Foundation, Italy. Endothelial cell loss (ECL) and tissue wastage were recorded retrospectively after DMEK preparation and correlated with the number of tissues prepared each year by each operator. On average, our operators performed 1 donor preparation a week over the course of this study...
March 1, 2018: Cornea
A Musayeva, J Wasielica-Poslednik, N Pfeiffer, A Gericke
No abstract text is available yet for this article.
February 28, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
Oganes G Oganesyan, Vladimir V Neroev, Arthur A Grdikanyan, Vostan R Getadaryan
PURPOSE: To describe the feasibility of same-day, consecutive use of a single donor cornea in 5 patients with corneal pathology, who required anterior lamellar and endothelial keratoplasties. METHODS: Descemet membrane (DM) with endothelium was completely stripped from a single corneoscleral button and punched out from the endothelial side with a circular, standard punch. Using a custom-made punch for linear cutting of DM, we obtained 4 quarter-grafts (Q-graft)...
February 27, 2018: Cornea
Weng Hon Lee, Adrian Tey, Kevin Gales, Hardeep Singh Mudhar, Francisco C Figueiredo
AIM: To describe a cohort of patients with irreversible unilateral bullous keratopathy (BK) of undetermined aetiology. METHOD: Retrospective, single-centre case series in a tertiary corneal referral centre. RESULTS: Eleven consecutive patients (nine females; mean age 71.7 years) presented from 1999 to 2009 with acute onset unilateral visual loss. At presentation, the best-corrected visual acuity of the affected eyes was 6/9 or worse with mean central corneal thickness (CCT) of 684 (SD 66) μm...
February 26, 2018: British Journal of Ophthalmology
Jorge L Alió Del Barrio, Alfredo Vega-Estrada, Jorge L Alió
PURPOSE: To describe an alternative treatment option for secondary Descemet membrane endothelial keratoplasty (DMEK) graft failure, using a second DMEK graft without primary graft removal ("DMEK under DMEK"). METHODS: A 72-year-old patient with pseudophakic bullous keratopathy in the left eye underwent an 8.25-mm second DMEK under an 8.5-mm failed DMEK because of previous graft rejection and subsequent secondary failure. RESULTS: Corrected distance visual acuity improved from 0...
February 22, 2018: Cornea
Adi Einan-Lifshitz, Nir Sorkin, Tanguy Boutin, Zale Mednick, Mohammad Kreimei, Clara C Chan, David S Rootman
PURPOSE: To suggest a new surgical approach for posterior opacities or persistent Descemet membrane (DM) detachment in failed deep anterior lamellar keratoplasty (DALK) and to report the outcome of Descemet membrane endothelial keratoplasty (DMEK) in a series of patients with DALK failure. METHODS: In this retrospective case series of patients who underwent DMEK for failed DALK at Toronto Western Hospital, 4 patients with failed DALK who underwent DMEK surgery were included...
February 22, 2018: Cornea
Miles F Greenwald, Philip I Niles, A Tim Johnson, Jesse M Vislisel, Mark A Greiner
Purpose: To report a case of bilateral iridoschisis with cataracts and corneal decompensation in a patient who underwent cataract extraction and superficial iridectomy followed by Descemet membrane endothelial keratoplasty (DMEK). Observations: A 58-year-old man with previously diagnosed iridoschisis, cataracts, and diabetes mellitus experienced progressive vision loss bilaterally due to corneal decompensation. Slit lamp examination revealed iridoschisis with iris fibrils contacting the corneal endothelium, stromal edema, and mild guttate changes bilaterally...
March 2018: American Journal of Ophthalmology Case Reports
Xiaolei Lin, Yue Wu, Yana Fu, Qi Dai
RATIONALE: To report a case of late spontaneous reattachment of Descemet membrane (DM) detachment after deep anterior lamellar keratoplasty (DALK). PATIENT CONCERNS: A 50-year-old woman with stromal corneal scarring underwent a DALK with the big bubble technique. The DM detachment and double anterior chamber were observed on the first day after operation. DIAGNOSES: Descemet membrane detachment after deep anterior lamellar keratoplasty [Oculus Dexter (OD), indicates right eye]...
February 2018: Medicine (Baltimore)
Aline I Riechardt, Julian P Klein, Dino Cordini, Jens Heufelder, Matus Rehak, Ira Seibel, Antonia M Joussen
PURPOSE: This study aims to analyze the effect of salvage proton beam therapy for the treatment of recurrent iris melanoma. METHOD: In this clinical case series, we retrospectively analyzed the data of eight patients who underwent proton beam therapy of the whole anterior segment as salvage therapy between 2000 and 2016 for recurrent iris melanoma after resection, ruthenium brachytherapy, or sector proton beam therapy. Two patients received salvage proton beam therapy for repeated tumor relapse...
February 20, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
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