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https://www.readbyqxmd.com/read/28316189/-noteworthy-and-controversial-problems-of-deep-anterior-lamellar-keratoplasty
#1
H Gao
Corneal transplant is the main treatment for blindness caused by corneal diseases. The common methods of corneal transplant include penetrating keratoplasty and lamellar keratoplasty. With the advances of microsurgical instruments and technology in recent years, deep anterior lamellar keratoplasty (DALK) has gradually increased. Compared with conventional penetrating keratoplasty, the optical effects of DALK are not much different, but DALK has fewer complications. So DALK is expected to become the mainstream of corneal transplantation...
March 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28300735/comparison-of-femtosecond-laser-assisted-descemetic-and-predescemetic-lamellar-keratoplasty-for-keratoconus
#2
Yan Lu, Ana Beatriz Diniz Grisolia, Yi-Rui Ge, Chun-Yan Xue, Qian Cao, Li-Ping Yang, Zhen-Ping Huang
PURPOSE: The purpose of this study is to compare the outcomes following femtosecond laser-assisted deep anterior lamellar keratoplasty (DALK) with 75% of stromal dissection (predescemetic group) and femtosecond laser-assisted DALK using big-bubble technique with total stromal resection (descemetic group) for the treatment of keratoconus. SUBJECTS AND METHODS: Twenty eyes of 17 patients with keratoconus were studied. There were 10 eyes of 9 patients in predescemetic group and 10 eyes of 8 patients in descemetic group...
January 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28289956/investigation-of-the-morphological-transition-of-a-phospholipid-bilayer-membrane-in-an-external-electric-field-via-molecular-dynamics-simulation
#3
Zhe Kong, Hongbo Wang, Lijun Liang, Zhisen Zhang, Shibo Ying, Quan Hu, Jia-Wei Shen
Elucidating the mechanisms for morphological transitions of the phospholipid bilayer membrane during cellular activity should lead to greater understanding of these membrane transitions and allow us to optimize biotechnologies such as drug delivery systems in organisms. To investigate the mechanism for and the dynamics of morphological changes in the phospholipid membrane, we performed molecular dynamics simulation of a phospholipid membrane with and without membrane protein under the influence of electric fields with different strengths...
April 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28271012/deep-feature-learning-for-automatic-tissue-classification-of-coronary-artery-using-optical-coherence-tomography
#4
Atefeh Abdolmanafi, Luc Duong, Nagib Dahdah, Farida Cheriet
Kawasaki disease (KD) is an acute childhood disease complicated by coronary artery aneurysms, intima thickening, thrombi, stenosis, lamellar calcifications, and disappearance of the media border. Automatic classification of the coronary artery layers (intima, media, and scar features) is important for analyzing optical coherence tomography (OCT) images recorded in pediatric patients. OCT has been known as an intracoronary imaging modality using near-infrared light which has recently been used to image the inner coronary artery tissues of pediatric patients, providing high spatial resolution (ranging from 10 to 20 μm)...
February 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28257387/repeat-keratoplasty-for-failed-deep-anterior-lamellar-keratoplasty-in-keratoconus-incidence-indications-and-outcomes
#5
Sepehr Feizi, Mohammad Ali Javadi, Pejman Khajuee-Kermani, Roya Jafari
PURPOSE: To analyze the incidence, indications, and clinical outcomes of penetrating keratoplasty (PK) and repeat deep anterior lamellar keratoplasty (DALK) after failed DALK for keratoconus. METHODS: This retrospective interventional case series reviewed the medical records of patients with keratoconus who underwent DALK and were followed up for at least 1 year. Patients who underwent PK or repeat DALK for failed DALK were identified. The incidence, indications, and clinical outcomes after repeat keratoplasty were assessed...
March 1, 2017: Cornea
https://www.readbyqxmd.com/read/28237153/current-indications-and-surgical-approaches-to-corneal-transplants-at-the-university-of-toronto-a-clinical-pathological-study
#6
Ryan Le, Narain Yucel, Shireen Khattak, Yeni H Yucel, Gerald J Prud'homme, Neeru Gupta
OBJECTIVE: To determine the most common reasons and surgical approaches for corneal graft surgery at the Kensington Eye Institute (KEI), University of Toronto. DESIGN: Retrospective cross-sectional study. PARTICIPANTS: A total of 229 consecutive corneal transplants performed at the KEI. METHODS: Demographic, clinical, and pathological data on all 2012 and 2013 corneal transplants were collected. RESULTS: The mean age for corneal transplants was 65 ± 16 years; 39% were full-thickness penetrating keratoplasties (PK) and 61% were partial-thickness...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28237152/patient-comfort-and-visual-outcomes-of-mini-scleral-contact-lenses
#7
Peng Yan, Mustafa Kapasi, Ronan Conlon, Joshua C Teichman, Season Yeung, Yelin Yang, Setareh Ziai, Kashif Baig
OBJECTIVE: To evaluate short-term visual outcome, patient acceptance, and tolerance of mini-scleral contact lenses (SCLs) in the management of various corneal pathologies. DESIGN: Retrospective case series. PARTICIPANTS: Thirty-two patients (40 eyes) who received mini-SCLs. METHODS: Single-centre retrospective case series, between February 2010 and January 2013, of 32 patients (40 eyes) with various corneal pathologies who were offered either Maxim 5R, Maxim 7, or Maxim 7 × 11 mini-SCLs for nonsurgical optimization of visual correction...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28225492/clinical-application-of-ticl-implantation-for-ametropia-following-deep-anterior-lamellar-keratoplasty-for-keratoconus-a-consort-compliant-article
#8
Qin Qin, Liping Yang, Zifang He, Zhenping Huang
BACKGROUND: This study aimed to investigate the clinical application of phakic toric intraocular collamer lens (TICL) implantation in treating ametropia following deep anterior lamellar keratoplasty (DALK) for patients with keratoconus, especially the effectiveness and safety of high astigmatism and indications of TICL implantation after corneal transplantation. METHODS: Using the self-controlled case series observation approach, 9 patients with ametropia (9 eyes) who underwent DALK surgery for keratoconus 1...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28153495/efficient-internalization-of-tat-peptide-in-zwitterionic-dopc-phospholipid-membrane-revealed-by-neutron-diffraction
#9
Xiaochao Chen, Shutao Liu, Bruno Deme, Viviana Cristiglio, Drew Marquardt, Richard Weller, Pingfan Rao, Yunqiang Wang, Jeremy Bradshaw
The aim of this study is to investigate the interactions between TAT peptides and a neutral DOPC bilayer by using neutron lamellar diffraction. The distribution of TAT peptides and the perturbation of water distribution across the DOPC bilayer were revealed. When compared to our previous study on an anionic DOPC/DOPS bilayer (X. Chen et al., Biochim Biophys Acta. 2013. 1828 (8), 1982-1988), a much deeper insertion of TAT peptides was found in the hydrophobic core of DOPC bilayer at a depth of 6.0Å from the center of the bilayer, a position close to the double bond of fatty acyl chain...
January 31, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28138772/effect-of-corneal-collagen-crosslinking-on-subsequent-deep-anterior-lamellar-keratoplasty-dalk-in-keratoconus
#10
Friederike Schaub, Philip Enders, Björn O Bachmann, Ludwig M Heindl, Claus Cursiefen
PURPOSE: The purpose was to investigate the impact of ultraviolet light corneal collagen crosslinking (UV-CXL) on the success rate and clinical outcome of subsequent deep anterior lamellar keratoplasty (DALK) in eyes with keratoconus (KC). METHODS: Medical records of 101 consecutive eyes with KC scheduled for big-bubble DALK surgery were screened retrospectively for details of previously performed UV-CXL, as well as intra- and postoperative complications of DALK surgery...
January 30, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28099281/vision-related-quality-of-life-before-and-after-deep-anterior-lamellar-keratoplasty
#11
Elvin Yildiz, Meltem Toklu, Ece Turan Vural
OBJECTIVES: To determine changes in the vision-related quality of life in patients undergoing deep anterior lamellar keratoplasty (DALK) by using the 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25). METHODS: Thirty-five patients who were scheduled for DALK between March 1, 2013, and March 1, 2014 were asked to complete the NEI VFQ-25. NEI VFQ-25 was administered again at 6 months and at 1 year postoperatively. Data on patients' age, sex, preoperative diagnosis, preoperative and postoperative best-corrected visual acuity, and postoperative astigmatism were recorded...
January 17, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28076561/visual-outcomes-after-deep-anterior-lamellar-keratoplasty-using-donor-corneas-without-removal-of-descemet-membrane-and-endothelium
#12
Tatiana Moura Bastos Prazeres, Rodrigo Muller, Tatiana Rayes, Flavio Eduardo Hirai, Luciene Barbosa de Sousa
Purpose: The optical quality of the interface after deep anterior lamellar keratoplasty (DALK) using the big-bubble technique has been shown to be excellent, leading to results comparable to penetrating keratoplasty. However, there is little in the literature with respect to the controversy surrounding the preparation of the donor cornea. The purpose of this study was to evaluate visual acuity (VA) in patients with keratoconus who underwent DALK without removal of the donor graft endothelium...
November 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28017678/deep-anterior-lamellar-keratoplasty-after-descemet-stripping-automated-endothelial-keratoplasty
#13
Shay Gutfreund, Pia Leon, Shmuel Graffi, Massimo Busin
PURPOSE: To report the indications and long-term outcomes of deep anterior lamellar keratoplasty (DALK) performed after Descemet stripping automated endothelial keratoplasty (DSAEK) in cases of visually significant stromal opacities. DESIGN: Retrospective, interventional, consecutive case series. METHODS: Setting: Private hospital. STUDY POPULATION: Thirteen eyes that underwent DALK after DSAEK at our institution. Indications for DALK after DSAEK included both stromal opacities persisting after DSAEK and stromal opacities occurring secondarily in post-DSAEK corneas...
March 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28010938/deep-lamellar-endothelial-keratoplasty-clinical-outcome-the-13-to-18-year-follow-up
#14
Hilde C M Hooijmaijers, Marina Rodriguez-Calvo-de-Mora, Korine van Dijk, Lisanne Ham, Carla Nieuwendaal, Gerrit R J Melles
No abstract text is available yet for this article.
December 20, 2016: Ophthalmology
https://www.readbyqxmd.com/read/28004157/-deep-anterior-lamellar-keratoplasty-experiences-and-results-of-the-first-100-consecutive-dalk-from-the-university-eye-hospital-of-cologne
#15
F Schaub, L M Heindl, P Enders, S Roters, B O Bachmann, C Cursiefen
BACKGROUND: Deep anterior lamellar keratoplasty (DALK) is a treatment option for patients with diseases of the corneal stroma without endothelial involvement and has been used at the Department of Ophthalmology of the University of Cologne since July 2011. Experiences and results of the first 100 consecutive cases from Cologne with a minimum follow-up of 1 year are summarized. MATERIALS AND METHODS: We included the first 100 consecutive DALKs. Indications for anterior lamellar keratoplasty, the feasibility of the surgery, the postoperative course, in addition to the complications and clinical outcome 3 months after complete suture removal, were examined...
December 21, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28003975/preoperative-evaluation-and-outcome-of-corneal-transplantation-for-limbal-dermoids-a-ten-year-follow-up-study
#16
Meng Xin, Yue-Rong Gong, Shan-Hao Jiang, Chun-Hua Dai, Su-Xia Li, Wei-Yun Shi
AIM: To summarize preoperative evaluation and outcome of corneal transplantation for limbal dermoids for ten years. METHODS: Eighty-five patients diagnosed with limbal dermoids and treated with corneal transplantation were analyzed retrospectively. All patients were further divided into two groups according to absence or presence of neovascularization surrounding the dermoids in the corneal stroma. Eighty-two eyes were treated with tumor excision combined with partial lamellar sclerokeratoplasty, and the other three eyes were performed by penetrating keratoplasty...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28002112/wet-peeling-technique-of-deep-anterior-lamellar-keratoplasty-with-hypotonic-water-and-blunt-dissection-for-healed-hydrops
#17
Zelin Zhao, Jinyang Li, Qinxiang Zheng, Wei Lin, Vishal Jhanji, Wei Chen
PURPOSE: To describe the surgical technique and outcomes of "wet-peeling" deep anterior lamellar keratoplasty (DALK) using sterile water and blunt dissection in cases with corneal scarring after healed corneal hydrops. METHODS: Manual DALK using a "wet-peeling" technique was performed in 20 eyes of 20 consecutive patients with healed corneal hydrops between June 2011 and October 2013. RESULTS: Intraoperative microperforations were encountered in 2 (10%) cases...
March 2017: Cornea
https://www.readbyqxmd.com/read/28002108/corneal-biomechanical-properties-after-penetrating-keratoplasty-or-deep-anterior-lamellar-keratoplasty-using-the-ocular-response-analyzer-a-meta-analysis
#18
Min-Shan Jiang, Jing-Yuan Zhu, Xue Li, Nan-Nan Zhang, Xue-Dian Zhang
PURPOSE: To evaluate the corneal biomechanical properties of patients who have undergone penetrating keratoplasty (PK) or deep anterior lamellar keratoplasty (DALK) using the ocular response analyzer. METHODS: Stata 13.0 SE was used for this meta-analysis. Studies in the literature that focused on corneal hysteresis (CH) or corneal resistance factor (CRF) after PK or DALK were retrieved by searching PubMed, Embase, Ovid, and Cochrane databases. We present the results as weighted mean difference (WMD) with a corresponding 95% confidence interval (CI)...
March 2017: Cornea
https://www.readbyqxmd.com/read/27982215/toxic-anterior-segment-syndrome-following-deep-anterior-lamellar-keratoplasty
#19
Neslihan Sevimli, Remzi Karadag, Ozgur Cakici, Huseyin Bayramlar, Seydi Okumus, Unsal Sari
We present the case of a 31-year-old patient with toxic anterior segment syndrome (TASS) that developed after undergoing deep anterior lamellar keratoplasty (DALK). She had keratoconus, and despite wearing hard contact lenses for many years in the left eye, her vision had deteriorated; therefore, DALK was performed on this eye. The preoperative visual acuity (VA) was finger counting at 3 m. Routine DALK was performed using the "big-bubble" technique. The corneal entry incision was hydrated at the end of the surgery, which was terminated by air injection into the anterior chamber...
September 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/27980368/visual-outcomes-following-deep-anterior-lamellar-keratoplasty-in-granular-corneal-dystrophy-types-1-and-2
#20
LETTER
Lia M Uit de Bosch, Susan Ormonde, Stuti L Misra
No abstract text is available yet for this article.
December 2016: Korean Journal of Ophthalmology: KJO
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