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https://www.readbyqxmd.com/read/28213947/select-noxious-stimuli-induce-changes-on-corneal-nerve-morphology
#1
Deborah M Hegarty, Sam M Hermes, Katherine Yang, Sue A Aicher
The surface of the cornea contains the highest density of nociceptive nerves of any tissue in the body. These nerves are responsive to a variety of modalities of noxious stimuli and can signal pain even when activated by low threshold stimulation. Injury of corneal nerves can lead to altered nerve morphology, including neuropathic changes which can be associated with chronic pain. Emerging technologies that allow imaging of corneal nerves in vivo are spawning questions regarding the relationship between corneal nerve density, morphology and function...
February 18, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28204869/-corneal-cell-therapy-an-overview
#2
REVIEW
M Fuest, G Hin-Fai Yam, G Swee-Lim Peh, P Walter, N Plange, J S Mehta
In recent years, the cultivation and expansion of primary corneal cells has made significant progress. The transplantation of cultured limbal epithelial cells represents a successful and established treatment of the ocular surface. Cultivated corneal endothelial cells are undergoing a clinical trial in Japan. Stromal keratocytes can now be expanded in vitro. A wide range of stem cell sources is being tested in vitro and animal models for their possible application in corneal cell therapy. This article gives an overview of recent advancements and prevailing limitations for the use of different cell sources in the therapy of corneal disease...
February 15, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28202689/corneal-epithelial-stem-cells-and-their-niche-at-a-glance
#3
REVIEW
Craig S Nowell, Freddy Radtke
The corneal epithelium acts as a protective barrier on the anterior ocular surface and is essential for maintaining transparency of the cornea and thus visual acuity. During both homeostasis and repair, the corneal epithelium is maintained by self-renewing stem cells, which persist throughout the lifetime of the organism. Importantly, as in other self-renewing tissues, the functional activity of corneal epithelial stem cells (CSCEs) is tightly regulated by the surrounding microenvironment, or niche, which provides a range of cues that maintain the stem cell population...
February 15, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28193107/annals-express-evaluation-of-commonly-used-tear-sampling-methods-and-their-relevance-in-subsequent-biochemical-analysis
#4
Aniko Rentka, Krisztina Koroskenyi, Jolan Harsfalvi, Zoltan Szekanecz, Gabriella Szucs, Peter Szodoray, Adam Kemeny-Beke
The human precorneal tear film (PCTF) is a special body fluid, since it is a complex mixture of proteins, lipids small bioactive molecules and their concentrations and relative distribution represent not only the metabolic state of the ocular surface but also the systemic and local homeostasis of the outer eye and the human body. This suggests that biochemical analysis of the PCTF composition may provide a non-invasive tool for diagnosis and monitoring of disease progression or treatment efficacy in human medicine...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28192591/lasik-enhancement-clinical-and-surgical-management
#5
Majid Moshirfar, Naz Jehangir, Carlton R Fenzl, Michael McCaughey
PURPOSE: To review refractive regression and current therapeutic options for patients who have residual refractive error after LASIK. METHODS: An extensive literature search using PubMed was performed for terms such as "LASIK," "PRK," "enhancement," "overcorrection," "undercorrection," "re-lift," "mini-flap," and related terms. RESULTS: The presence of residual refractive error following LASIK is a challenging situation. After excluding anatomical causes (eg, ocular surface disease, cataract, and macular pathology) and intraoperative flap complications, evaluation of the residual stromal bed must be performed...
February 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28184236/diagnosis-and-medical-management-of-ocular-surface-squamous-neoplasia
#6
Ibrahim O Sayed-Ahmed, Sotiria Palioura, Anat Galor, Carol L Karp
INTRODUCTION: Topical chemotherapy has gained popularity among clinicians for the treatment of ocular surface squamous neoplasia (OSSN). The principal topical chemotherapy agents used in the management of OSSN are interferon-α2b, 5-fluorouracil, and mitomycin C. High-resolution optical coherence tomography (HR-OCT) is a non-invasive technique that can differentiate OSSN from other ocular surface lesions. AREAS COVERED: This review highlights the current regimens and diagnostic modalities used in managing OSSN...
2017: Expert Review of Ophthalmology
https://www.readbyqxmd.com/read/28181960/barriers-to-glaucoma-medication-compliance-among-veterans-dry-eye-symptoms-and-anxiety-disorders
#7
Jack Stringham, Noy Ashkenazy, Anat Galor, Sarah R Wellik
OBJECTIVE: To identify barriers to compliance of medical treatment for glaucoma among veterans. METHODS: Patients with glaucoma from the Miami Veterans Affairs Eye Clinic (n=74) filled out a 63-question survey regarding dry eye symptoms, concurrent systemic disease, and medications. The association between glaucoma medical compliance was defined as self-reported adherence to drop regimens greater than 75% of the time. RESULTS: Eighty percent of veterans (n=59) reported compliance with glaucoma therapy...
January 6, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28181147/a-clinic-based-survey-of-clinical-characteristics-and-practice-pattern-of-dry-eye-in-japan
#8
Motoko Kawashima, Masakazu Yamada, Kazuhisa Suwaki, Chika Shigeyasu, Miki Uchino, Yoshimune Hiratsuka, Norihiko Yokoi, Kazuo Tsubota
INTRODUCTION: The aim of this study was to investigate the clinical characteristics and practice pattern of patients with dry eye disease (DED) in eye clinics across Japan. METHODS: A multi-center, cross-sectional study was conducted among patients with DED who visited eye clinics in Japan. Subjective symptoms, patient's background, ocular surface features, and tear function were evaluated. Main outcome measures were tear break-up time (TBUT), Schirmer I value, kerato-conjunctival staining score, and dry eye symptom questionnaire score...
February 8, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28179131/rasch-analysis-of-three-dry-eye-questionnaires-and-correlates-with-objective-clinical-tests
#9
Colm McAlinden, Rongrong Gao, Qinmei Wang, Senmiao Zhu, Jing Yang, Ayong Yu, Anthony J Bron, Jinhai Huang
PURPOSE: To assess the psychometric properties of Chinese versions of the Ocular Comfort Index (OCI), Ocular Surface Disease Index (OSDI) and McMonnies questionnaires. Further, to assess the correlation between questionnaire scores and objective dry eye disease (DED) clinical tests. METHODS: Translated versions of the OCI, OSDI and McMonnies questionnaires were completed in a random order by 238 participants with DED. Objective clinical tests included visual acuity (VA), fluorescein tear film break-up time (TBUT), corneal fluorescein staining, Schirmer I testing and meibomian gland grading...
February 4, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28170535/activation-of-p38-and-erk-mitogen-activated-protein-kinases-signaling-in-ocular-rosacea
#10
Edward J Wladis, Supraja Swamy, Alyssa Herrmann, Jinhong Yang, J Andrew Carlson, Alejandro P Adam
Purpose: Rosacea-related cutaneous inflammation is a common cause of ocular surface disease. Currently, there are no specific pharmacologic therapies to treat ocular rosacea. Here, we aimed at determining the differences in intracellular signaling activity in eyelid skin from patients with and without ocular rosacea. Methods: This was an observational, comparative case series including 21 patients undergoing lower lid ectropion surgery at one practice during 2013 and 2014 (18 patients with rosacea, 13 control patients), and 24 paraffin-embedded archival samples from Albany Medical Center, selected randomly (12 patients with rosacea, 12 control patients)...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28170196/lacrimal-gland-repair-using-progenitor-cells
#11
Anastasia Gromova, Dmitry A Voronov, Miya Yoshida, Suharika Thotakura, Robyn Meech, Darlene A Dartt, Helen P Makarenkova
In humans, the lacrimal gland (LG) is the primary contributor to the aqueous layer of the tear film. Production of tears in insufficient quantity or of inadequate quality may lead to aqueous-deficiency dry eye (ADDE). Currently there is no cure for ADDE. The development of strategies to reliably isolate LG stem/progenitor cells from the LG tissue brings great promise for the design of cell replacement therapies for patients with ADDE. We analyzed the therapeutic potential of epithelial progenitor cells (EPCPs) isolated from adult wild-type mouse LGs by transplanting them into the LGs of TSP -1(-/-) mice, which represent a novel mouse model for ADDE...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28170093/topical-treatments-for-blepharokeratoconjunctivitis-in-children
#12
REVIEW
Michael O'Gallagher, Catey Bunce, Melanie Hingorani, Frank Larkin, Stephen Tuft, Annegret Dahlmann-Noor
BACKGROUND: Blepharokeratoconjunctivitis (BKC) is a type of inflammation of the surface of the eye and eyelids that involves changes of the eyelids, dysfunction of the meibomian glands, and inflammation of the conjunctiva and cornea. Chronic inflammation of the cornea can lead to scarring, vascularisation and opacity. BKC in children can cause significant symptoms including irritation, watering, photophobia and loss of vision from corneal opacity, refractive error or amblyopia.Treatment of BKC is directed towards modification of meibomian gland disease and the bacterial flora of lid margin and conjunctiva, and control of ocular surface inflammation...
February 7, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28163544/lifitegrast-a-novel-drug-for-treatment-of-dry-eye-disease
#13
Afroz Abidi, Pooja Shukla, Ali Ahmad
Dry eye disease (DED) is an inflammatory disorder of ocular surfaces leading to severe disability, especially in the elderly age group. The mainstay of therapy includes artificial tears, punctual plugs, topical anti-inflammatory agents, and corticosteroids. In the past few years, only cyclosporine-A emulsions have been added to the existing therapy, but it is discontinued by most patients as it causes burning sensation in the eye. Hence, progress in new research for a better therapeutic option led to the discovery of lymphocyte function-associated antigen intercellular adhesion molecule 1 antagonist, lifitegrast...
October 2016: Journal of Pharmacology & Pharmacotherapeutics
https://www.readbyqxmd.com/read/28157225/corneal-confocal-scanning-laser-microscopy-in-patients-with-dry-eye-disease-treated-with-topical-cyclosporine
#14
B Iaccheri, G Torroni, C Cagini, T Fiore, A Cerquaglia, M Lupidi, S Cillino, H S Dua
PurposeTo investigate the effect of cyclosporine on corneal ultrastructure and on major signs and symptoms of patients with dry eye disease.Patients and methodsIn this prospective cohort study, patients with dry eye disease were treated with a drop of cyclosporine 0.05% twice daily. Clinical evaluation was carried out at baseline and at months 1, 3, and 6. All patients completed the Ocular Surface Disease Index (OSDI) questionnaire, and tear film break-up time (BUT), fluorescein and lissamine green staining, and Schirmer test were carried out...
February 3, 2017: Eye
https://www.readbyqxmd.com/read/28157224/comparison-of-clinical-outcome-with-different-treatment-regimens-in-acute-adenoviral-keratoconjunctivitis
#15
L Asena, E Şıngar Özdemir, A Burcu, E Ercan, M Çolak, D D Altınörs
PurposeTo compare the clinical outcome with different treatment regimens in Acute Adenoviral Keratoconjunctivitis (AAK).MethodsThe records of 110 patients diagnosed as AAK in two tertiary eye care centers were evaluated retrospectively. The treatment regimen, follow-up duration, time until improvement of the symptoms, visual acuity, clinical findings, Schirmer's test and the Ocular Surface Disease Index (OSDI) score at the first day, first week and third week were recorded. The Kruskal-Wallis Test and Chi-square test were used for comparison of quantitative and categorical variables, respectively...
February 3, 2017: Eye
https://www.readbyqxmd.com/read/28146363/keratitis-in-dry-eye-disease-and-topical-ciclosporin-a
#16
Andrea Leonardi, Bruno Flamion, Christophe Baudouin
Tear film alterations in dry eye disease (DED) include reduced tear volume and an increase in inflammatory cytokines. Instability and reduced tear production initiate a vicious cycle where hyperosmolarity, ocular inflammation, and apoptosis may induce damage of the ocular surface including keratitis. Topical cyclosporine (CsA) has been used for the treatment of moderate-to-severe DED; however, previous studies failed to demonstrate its benefits by the European Agency standards. A new formulation of CsA 0.1% has been recently approved in the EU to treat severe keratitis in DED patients...
February 1, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28139245/a-metabolome-wide-study-of-dry-eye-disease-reveals-serum-androgens-as%C3%A2-biomarkers
#17
Jelle Vehof, Pirro G Hysi, Christopher J Hammond
PURPOSE: To test the association between serum metabolites and dry eye disease (DED) using a hypothesis-free metabolomics approach. DESIGN: Cross-sectional association study. PARTICIPANTS: A total of 2819 subjects from the population-representative TwinsUK cohort in the United Kingdom, with a mean age of 57 years (range, 17-82 years). METHODS: We tested associations between 222 known serum metabolites and DED. All subjects underwent nontargeted metabolomic analysis of plasma samples using gas and liquid chromatography in combination with mass spectrometry (Metabolon Inc...
January 28, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28135750/-ophthalmic-plastic-surgery-of-exposure-keratopathy-in-the-intensive-care-unit
#18
C Siebert, A Menges, F H Tost
Critically ill patients in the intensive care unit (ICU) may develop eye problems, due to impaired ocular protective mechanisms or direct involvement of the eye in severe systemic diseases. If eye infections or ocular surface disorders are not identified in time, endophthalmitis or corneal ulcer may develop and can cause permanent functional injuries of the eye. A retrospective analysis was performed and a total of 283 complete intensive care courses of treatment were evaluated, taking into account ophthalmic medical consultations for frequent cardinal symptoms...
January 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28132878/emerging-strategies-for-the-diagnosis-and-treatment-of-meibomian-gland-dysfunction-proceedings-of-the-ocean-group-meeting
#19
Gerd Geerling, Christophe Baudouin, Pasquale Aragona, Maurizio Rolando, Kostas G Boboridis, José M Benítez-Del-Castillo, Yonca A Akova, Jesús Merayo-Lloves, Marc Labetoulle, Martin Steinhoff, Elisabeth M Messmer
Meibomian gland dysfunction (MGD) is a common and chronic disorder that has a significant adverse impact on patients' quality of life. It is a leading cause of evaporative dry eye disease (DED), as meibomian glands play an important role in providing lipids to the tear film, which helps to retard the evaporation of tears from the ocular surface. MGD is also often present in conjunction with primary aqueous-deficient DED. Obstructive MGD, the most commonly observed type of MGD, is the main ocus of this article...
January 26, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28129293/ocular-surface-epithelial-atypia-mimicking-squamous-neoplasia-in-association-with-ulcerative-colitis
#20
Sally S Ong, Scott D Walter, Xi Chen, Gargi K Vora, Melissa Daluvoy, Alan D Proia, Prithvi Mruthyunjaya
PURPOSE: Inflammatory bowel disease may be associated with extraintestinal manifestations. We report a case of severe reactive epithelial atypia resembling ocular surface squamous neoplasia (OSSN) in a patient with ulcerative colitis (UC). METHODS: Case report. RESULTS: A 32-year-old woman presented with sequential, progressive keratoconjunctival lesions in the left and right eyes, and both lesions were excised. Anterior segment optical coherence tomography demonstrated features similar to OSSN, whereas histological examination revealed severe reactive epithelial atypia mimicking severe dysplasia...
January 26, 2017: Cornea
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