keyword
MENU ▼
Read by QxMD icon Read
search

Deep lamellar

keyword
https://www.readbyqxmd.com/read/28730097/recurrence-of-keratoconus-after-deep-anterior-lamellar-keratoplasty-following-pregnancy
#1
Zisis Gatzioufas, Georgios D Panos, Evangelia Gkaragkani, Stylianos Georgoulas, Romesh Angunawela
No abstract text is available yet for this article.
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28672072/the-blue-bubble-technique-an-ab-interno-approach-for-descemet-separation-in-deep-anterior-lamellar-keratoplasty-dalk-using-trypan-blue-stained-viscoelastic-device
#2
Eitan Livny, Irit Bahar, Naama Hammel, Yoav Nahum
BACKGROUND: In this study we examined a novel variant of "Big-Bubble" Deep Anterior Lamellar Keratoplasty (DALK) using trypan-blue-stained viscoelastic device for the creation of a pre-Descemetic bubble. METHODS: Ten corneoscleral rims were mounted on an artificial anterior chamber (AC). The anterior chamber was filled with air through a limbal paracentesis. A Melles' triangulated spatula was inserted through the paracentesis, with its tip penetrating the AC, was then slightly retracted and pushed into the deep stroma above the roof of the paracentesis...
July 3, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28664905/air-pressure-changes-in-the-creation-and-bursting-of-the-type-1-big-bubble-in-deep-anterior-lamellar-keratoplasty-an-ex-vivo-study
#3
S L AlTaan, I Mohammed, D G Said, H S Dua
PurposeTo measure the pressure and volume of air required to create a big bubble (BB) in simulated deep anterior lamellar keratoplasty (DALK) in donor eyes and ascertain the bursting pressure of the BB.Patients and methodsTwenty-two human sclera-corneal discs were used. Air was injected into the corneal stroma to create a BB and the pressure measured by means of a pressure converter attached to the system via a side port. A special clamp was designed to prevent air leak from the periphery of the discs. The pressure at which air emerged in the corneal tissue; the bursting pressure measured after advancing the needle into the bubble cavity and injecting more air; the volume of air required to create a BB and the volume of the BB were ascertained...
June 30, 2017: Eye
https://www.readbyqxmd.com/read/28644237/outcomes-of-keratoplasty-after-ocular-surface-stem-cell-transplantation
#4
Lorena Sepsakos, Albert Y Cheung, Edward J Holland
PURPOSE: To investigate the long-term outcomes of penetrating keratoplasty (PK) and deep anterior lamellar keratoplasty (DALK) after ocular surface stem cell transplantation (OSST). METHODS: An observational retrospective review was performed on all patients who underwent OSST followed by either PK or DALK with a minimum of 6-month follow-up. RESULTS: One hundred two eyes fulfilled the inclusion criteria. The mean time to keratoplasty after OSST was 19 months, and the mean follow-up was 57 months after keratoplasty...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28627891/effect-of-deep-eutectic-solvent-nanostructure-on-phospholipid-bilayer-phases
#5
Saffron J Bryant, Rob Atkin, Gregory G Warr
Phospholipids are shown by solvent penetration experiments to form lamellar phases and spontaneously spawn vesicles in a wide range of deep eutectic solvents (DESs) composed of alkylammonium halide salts and glycerol or ethylene glycol, which are shown to be nanostructured by X-ray scattering. In contrast with molecular solvents, the chain melting temperature of each phospholipid, which determines the stability of the swellable bilayer phase, depends on the structure of the cation, anion, and molecular H-bond donor that constitute the DES...
June 28, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28622629/bacterial-community-dynamics-in-a-cooling-tower-with-emphasis-on-pathogenic-bacteria-and-legionella-species-using-universal-and-genus-specific-deep-sequencing
#6
Rui P A Pereira, Jörg Peplies, Manfred G Höfle, Ingrid Brettar
Cooling towers are the major source of outbreaks of legionellosis in Europe and worldwide. These outbreaks are mostly associated with Legionella species, primarily L. pneumophila, and its surveillance in cooling tower environments is of high relevance to public health. In this study, a combined NGS-based approach was used to study the whole bacterial community, specific waterborne and water-based bacterial pathogens, especially Legionella species, targeting the 16S rRNA gene. This approach was applied to water from a cooling tower obtained by monthly sampling during two years...
June 6, 2017: Water Research
https://www.readbyqxmd.com/read/28614150/exophytic-osteochondroma-of-the-brow
#7
Frederick A Jakobiec, Fouad R Zakka, Nahyoung Grace Lee
Most boney and cartilaginous lesions of the orbit and periorbital compartments are benign, grow endophytically, and are composed of dense lamellar bone (eburnated or ivory osteomas). An 87-year-old woman had a well-circumscribed, firm, round, and exophytic lesion of the brow region for at least 15 years. Excisional surgery disclosed an osteocartilaginous lesion with an enveloping pseudocapsule (periosteum/perichondrium) and a narrow stalk connecting it to the frontal bone. The periphery of the lesion displayed lamellar bone which appeared to be replacing a central cartilaginous zone...
June 13, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28601345/comparison-of-12-month-anatomic-and-functional-results-between-z6-femtosecond-laser-assisted-and-manual-trephination-in-deep-anterior-lamellar-keratoplasty-for-advanced-keratoconus
#8
A Blériot, E Martin, P Lebranchu, K Zimmerman, L Libeau, M Weber, B Vabres, I Orignac
The management of severe keratoconus requires corneal transplantation, for which the gold standard is deep anterior lamellar keratoplasty (DALK), preserving the healthy Descemet's membrane and endothelium. The safety and reproducibility of corneal cuts have been improved by the evolution of femtosecond lasers in refractive surgery, and femtosecond laser in DALK would seem to provide the same advantages over the manual method. In our retrospective study, we compare functional and anatomical results of femtosecond-assisted DALK versus manual trephination DALK in patients with keratoconus in stage 4 of the Krumeich classification...
June 7, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28600303/stability-of-visual-outcome-between-2-and-5-years-following-corneal-transplantation-in-the-uk
#9
Sing-Pey Chow, Cathy L Hopkinson, Derek M Tole, Mark N Jones, Stuart D Cook, W John Armitage
BACKGROUND AND AIMS: Many studies of corneal transplantation focus on graft failure or rejection as endpoints, or report visual outcomes at one postoperative time point. We aimed to study the stability of visual outcomes between 2 and 5 years following corneal transplantation. METHODS: All patients with keratoconus (868) or Fuchs endothelial dystrophy (FED) (569) receiving their first corneal transplant for visual purposes in the UK between January 2003 and December 2009 were included...
June 9, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28594993/descemet-membrane-splitting-following-deep-anterior-lamellar-keratoplasty
#10
Matthias Fuest, Jodhbir S Mehta
No abstract text is available yet for this article.
June 8, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28587410/a-case-report-of-the-orbit-ocular-association-and-the-lung-in-granulomatosis-with-polyangiitis-a-diagnostic-challenge
#11
Cheng-Wei Lu, Xiu-Fen Liu, Ying Luan, Cheng-Bo Lu, Dan-Dan Zhou, Li-Min Guo, Ya-Bin Sun, Sheng-Nan Chen, Yun-Long Wu, Ji-Long Hao
Granulomatosis with polyangiitis (GPA) is a systemic form of vasculitis that involves small to medium sized vessels and is associated with high morbidity and mortality. GPA presents a continuous and difficult clinical diagnostic concern, due to the rarity of the disease and the diversity of the manifestations. This case report discusses the unusual symptoms presented by a particular patient, discusses these manifestations and explains how the final diagnosis was identified as GPA. A 40-year old Chinese woman was initially referred to the present institution for a progressive worsening pain, redness and gradual decrease in visual acuity in the eyes over the past 7-year period...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28556252/traumatic-globe-rupture-after-deep-anterior-lamellar-keratoplasty-a-novel-management-technique
#12
Miltiadis Fiorentzis, Sebastian Bäurle, Anja Viestenz, Berthold Seitz, Arne Viestenz
BACKGROUND: A traumatic wound dehiscence can occur many years after surgery in 2-6% of all keratoplasties. Intraocular tissue prolapse can lead to severe visual loss. Deep anterior lamellar keratoplasty (DALK) leads to higher wound stability because of the intact Descemet membrane. We report a case of a novel management of wound dehiscence following DALK. METHODS: A 59-year-old patient underwent uncomplicated DALK for advanced keratoconus. Eighteen months later he experienced a traumatic wound dehiscence (globe rupture) after a fall...
May 27, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28540006/office-based-relaxing-incision-procedure-for-correction-of-astigmatism-after-deep-anterior-lamellar-keratoplasty
#13
Mohammad Ali Javadi, Sepehr Feizi, Firooz Mirbabaee, Yousef Fekri
PURPOSE: To report the outcomes of a simple and effective office-based procedure for the correction of astigmatism after deep anterior lamellar keratoplasty (DALK). METHODS: This study enrolled 24 consecutive keratoconic eyes that developed an intolerable amount of graft astigmatism after DALK. The location and extension of steep semi-meridians were determined using corneal topography. Office-based relaxing incision procedures were performed at the slit-lamp biomicroscope using a 27-gauge needle...
April 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28534231/comparison-of-outcomes-and-complications-of-deep-anterior-lamellar-keratoplasty-and-penetrating-keratoplasty-performed-in-a-large-group-of-patients-with-keratoconus
#14
Ashbala Khattak, Fouad R Nakhli, Khaled M Al-Arfaj, Abdullah A Cheema
PURPOSE: To compare visual acuity, refraction, topography, and complications of deep anterior lamellar keratoplasty (DALK) and penetrating keratoplasty (PKP) performed in patients with keratoconus (KCN). METHODS: In this retrospective interventional non-randomized clinical study, patients with moderate to severe KCN that underwent either PKP or DALK for optical corrections were enrolled. The final outcome analysis was performed after complete suture removal for both groups of patients...
May 22, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28525260/three-dimensional-visualization-and-characterization-of-polymeric-self-assemblies-by-transmission-electron-microtomography
#15
Hiroshi Jinnai, Takeshi Higuchi, Xiaodong Zhuge, Akihito Kumamoto, Kees Joost Batenburg, Yuichi Ikuhara
Self-assembling structures and their dynamical processes in polymeric systems have been investigated using three-dimensional transmission electron microscopy (3D-TEM). Block copolymers (BCPs) self-assemble into nanoscale periodic structures called microphase-separated structures, a deep understanding of which is important for creating nanomaterials with superior physical properties, such as high-performance membranes with well-defined pore size and high-density data storage media. Because microphase-separated structures have become increasingly complicated with advances in precision polymerization, characterizing these complex morphologies is becoming increasingly difficult...
May 19, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28522139/in-vivo-confocal-raman-microscopic-determination-of-depth-profiles-of-the-stratum-corneum-lipid-organization-influenced-by-application-of-various-oils
#16
ChunSik Choe, Johannes Schleusener, Jürgen Lademann, Maxim E Darvin
BACKGROUND: The intercellular lipids (ICL) of stratum corneum (SC) play an important role in maintaining the skin barrier function. The lateral and lamellar packing order of ICL in SC is not homogenous, but rather depth-dependent. OBJECTIVE: This study aimed to analyze the influence of the topically applied mineral-derived (paraffin and petrolatum) and plant-derived (almond oil and jojoba oil) oils on the depth-dependent ICL profile ordering of the SC in vivo. METHOD: Confocal Raman microscopy (CRM), a unique tool to analyze the depth profile of the ICL structure non-invasively, is employed to investigate the interaction between oils and human SC in vivo...
May 6, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28505034/pediatric-corneal-transplants
#17
Danielle Trief, Maria C Marquezan, Christopher J Rapuano, Christina R Prescott
PURPOSE OF REVIEW: Pediatric keratoplasty poses unique challenges in clinical and surgical management. However, successful transplantation can afford a child vision in an otherwise poorly seeing eye. This review will provide an update on recent advances in pediatric keratoplasty. RECENT FINDINGS: Although children who receive corneal transplants remain at increased risk of rejection, infection, and graft dehiscence compared with adult corneal transplant recipients, new surgical techniques, and advances in clinical management have led to better outcomes...
May 12, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28503733/long-term-safety-from-transmission-of-porcine-endogenous-retrovirus-after-pig-to-non-human-primate-corneal-transplantation
#18
Hyuk Jin Choi, Jiyeon Kim, Jae Young Kim, Hyun Ju Lee, Won Ryang Wee, Mee Kum Kim, Eung Soo Hwang
BACKGROUND: The risk of xenozoonosis mainly by porcine endogenous retrovirus (PERV) has been considered as one of the main hurdles in xenotransplantation and therefore should be elucidated prior to the clinical use of porcine corneal grafts. Accordingly, an investigation was performed to analyze the infectivity of PERVs from porcine keratocytes to human cells, and the long-term risk of transmission of PERVs was determined using pig-to-non-human primate (NHP) corneal transplantation models...
May 14, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28499702/prespermatogenesis-and-early-spermatogenesis-in-frogs
#19
Katarzyna Haczkiewicz, Beata Rozenblut-Kościsty, Maria Ogielska
Spermatogenesis in frogs was for the first time divided into two phases: prespermatogenesis, when gonocytes proliferate in developing tadpole testes, and active spermatogenesis when spermatogonial stem cells (i.e. descendants of gonocytes), either self-renew or enter into meiotic cycles within cysts formed by Sertoli cells. We argue that amphibian larval gonocytes are homologues to mammalian gonocytes, whereas spermatogonial stem cells (SSCs) in adult frogs are homologous to mammalian single spermatogonia (As)...
March 12, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28481010/dynamics-of-big-bubble-formation-in-deep-anterior-lamellar-keratoplasty-by-the-big-bubble-technique-in%C3%A2-vitro-studies
#20
Harminder S Dua, Lana A Faraj, Mohamed B Kenawy, Saief AlTaan, Mohamed S Elalfy, Tarek Katamish, Dalia G Said
PURPOSE: To examine the movement of air injected in the cornea in simulated deep anterior lamellar keratoplasty (DALK), from the needle tip to the formation of different types of big bubbles (BB) and to ascertain how air travels through the stroma and pre-Descemet's layer [Dua's layer (PDL)] to create a type-1 (air between PDL and deep stroma) and type-2BB (air between PDL and Descemet's membrane). METHODS: Air was injected in 57 sclerocorneal discs and the passage recorded...
May 8, 2017: Acta Ophthalmologica
keyword
keyword
90517
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"