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https://www.readbyqxmd.com/read/29032195/global-causes-of-blindness-and-distance-vision-impairment-1990-2020-a-systematic-review-and-meta-analysis
#1
Seth R Flaxman, Rupert R A Bourne, Serge Resnikoff, Peter Ackland, Tasanee Braithwaite, Maria V Cicinelli, Aditi Das, Jost B Jonas, Jill Keeffe, John H Kempen, Janet Leasher, Hans Limburg, Kovin Naidoo, Konrad Pesudovs, Alex Silvester, Gretchen A Stevens, Nina Tahhan, Tien Y Wong, Hugh R Taylor
BACKGROUND: Contemporary data for causes of vision impairment and blindness form an important basis of recommendations in public health policies. Refreshment of the Global Vision Database with recently published data sources permitted modelling of cause of vision loss data from 1990 to 2015, further disaggregation by cause, and forecasts to 2020. METHODS: In this systematic review and meta-analysis, we analysed published and unpublished population-based data for the causes of vision impairment and blindness from 1980 to 2014...
October 10, 2017: Lancet Global Health
https://www.readbyqxmd.com/read/29030303/electrospun-formulations-of-bevacizumab-for-sustained-release-in-the-eye
#2
Ukrit Angkawinitwong, Sahar Awwad, Peng T Khaw, Steve Brocchini, Gareth R Williams
Medicines based on vascular endothelial growth factor (VEGF) neutralising antibodies such as bevacizumab have revolutionized the treatment of age related macular degeneration (AMD), a common blinding disease, and have great potential in preventing scarring after surgery or accelerating the healing of corneal injuries. However, at present, frequent invasive injections are required to deliver these antibodies. Such administration is uncomfortable for patients and expensive for health service providers. Much effort is thus focused on developing dosage forms that can be administered less frequently...
October 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29029847/the-diagnostic-challenge-of-small-fibre-neuropathy-clinical-presentations-evaluations-and-causes
#3
REVIEW
Astrid J Terkelsen, Páll Karlsson, Giuseppe Lauria, Roy Freeman, Nanna B Finnerup, Troels S Jensen
Small fibre neuropathies are a heterogeneous group of disorders affecting thinly myelinated Aδ-fibres and unmyelinated C-fibres. Although multiple causes of small nerve fibre degeneration have been reported, including via genetic mutations, the cause of small fibre neuropathy remains unknown in up to 50% of cases. The typical clinical presentation of small fibre neuropathy is that of a symmetrical, length-dependent polyneuropathy associated with sensory or autonomic symptoms. More rarely, the clinical presentation is characterised by non-length-dependent, focal, or multifocal symptoms...
November 2017: Lancet Neurology
https://www.readbyqxmd.com/read/29027064/light-scattering-measurements-in-electron-beam-sterilized-corneas-stored-in-recombinant-human-serum-albumin
#4
Khoa D Tran, Yan Li, Jeffrey D Holiman, Maolong Tang, David Huang, Michael D Straiko, Christopher G Stoeger
Irradiated corneal tissues have been used for a variety of ophthalmic procedures including glaucoma drainage device covers and lamellar grafts. The maintenance of corneal clarity is important, as light obstructions resulting from processing or long-term storage of irradiated corneas may negatively affect vision and postoperative cosmesis. It has been reported that corneal tissues can be preserved in human serum albumin (HSA), however, the clarity of corneas after long-term storage in HSA has not been well described...
October 12, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/29023238/severe-phenotype-of-keratitis-ichthyosis-deafness-syndrome-with-presumed-ocular-surface-squamous-neoplasia
#5
Ana Silvia Serrano-Ahumada, Vianney Cortes-González, Luz María González-Huerta, Sergio Cuevas, Luis Aguilar-Lozano, Cristina Villanueva-Mendoza
PURPOSE: The aim of this study was to describe a case of severe keratitis-ichthyosis-deafness (KID) syndrome with ocular surface squamous neoplasia. METHODS: The affected patient underwent complete ocular and systemic examinations. The molecular studies included polymerase chain reaction amplification and automated DNA sequencing of the complete gap junction beta-2 (GJB2) gene coding sequence. RESULTS: A 30-year-old man presented with generalized erythro-hyperkeratosis and deafness and complaints of decreased visual acuity, tearing, and photophobia...
October 10, 2017: Cornea
https://www.readbyqxmd.com/read/29023237/corneal-tissue-from-dry-eye-donors-leads-to-enhanced-graft-rejection
#6
Takenori Inomata, Jing Hua, Takeshi Nakao, Tina Shiang, Homer Chiang, Afsaneh Amouzegar, Reza Dana
PURPOSE: To assess the effect of dry eye disease (DED) in graft donors on dendritic cell (DC) maturation, host T-cell sensitization, and corneal allograft rejection. METHODS: Corneas of control (healthy donor) and DED mice (C57BL/6) were transplanted onto fully allogeneic naive BALB/c recipients (n = 10 mice/group). Long-term allograft survival was evaluated for 8 weeks. Corneas and draining lymph nodes (dLNs) were harvested at posttransplantation day 14 (n = 5 mice/group)...
October 10, 2017: Cornea
https://www.readbyqxmd.com/read/29022953/pattern-of-corneal-diseases-in-paediatric-age-group-at-a-tertiary-eye-care-center-in-nepal
#7
A Shah, M Chaudhary, J K Shrestha
OBJECTIVE: It is to study the pattern of corneal diseases (including injuries) in paediatric population in a tertiary eye care center. MATERIALS AND METHODS: A descriptive, cross sectional study was carried out in a tertiary eye care center which included 176 cases. RESULTS: Out of 176 cases studied, 6 cases (3.4%) presented with congenital causes, 4 cases (2.27%) were of dystrophy and ectasia, 63 cases (35.79%) had infective origin, 17 cases (9...
January 2017: Nepalese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29021411/biomaterials-for-corneal-bioengineering
#8
Zhi Chen, Jingjing You, Xiao Liu, Simon Cooper, Christopher Hodge, Gerard Sutton, Jeremy Micah Crook, Gordon G Wallace
Corneal transplantation is an important surgical treatment for many common corneal diseases. However, a worldwide shortage of tissue from suitable corneal donors has meant that many people are not able to receive sight-restoring operations. In addition, rejection is a major cause of corneal transplant failure. Bioengineering corneal tissue has recently gained widespread attention. In order to facilitate corneal regeneration, a range of materials is currently being investigated. The ideal substrate requires sufficient tectonic durability, biocompatibility with cultured cellular elements, transparency, and perhaps biodegradability and clinical-compliance...
October 12, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29019876/unique-circumferential-peripheral-keratitis-in-relapsing-polychondritis-a-case-report
#9
Naohiro Motozawa, Takahiro Nakamura, Seiji Takagi, Masashi Fujihara, Yasuhiko Hirami, Kazuhiro Ishida, Chie Sotozono, Yasuo Kurimoto
RATIONALE: Relapsing polychondritis (RP) is a rare collagen disease characterized by inflammation and destruction of cartilage throughout the body. The paper details the clinical course of a case of RP with unique circumferential peripheral keratitis. PATIENT CONCERNS: A 54-year-old Japanese woman was referred to the hospital presenting with auricular and ocular pain. DIAGNOSES: Based on the auricle biopsy results and the three presenting symptoms (bilateral auricular chondritis, inflammatory arthritis and ocular inflammation), her condition was diagnosed as RP...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29016407/a-novel-entity-of-corneal-diseases-with-irregular-posterior-corneal-surfaces-concept-and-clinical-relevance
#10
Takefumi Yamaguchi, Eisuke Shimizu, Yukari Yagi-Yaguchi, Daisuke Tomida, Yoshiyuki Satake, Jun Shimazaki
Various corneal diseases, such as hereditary corneal dystrophies, corneal infection, and bullous keratopathy, cause corneal opacity, scarring, and edema, leading to severely decreased visual acuity and loss of vision. These diseases were regarded as corneal opacity diseases, and the decreased visual acuity was considered to be predominantly caused by corneal opacity. The influence of corneal irregular astigmatism on vision has been poorly understood to date, mainly because accurate quantification of irregular astigmatism has been technically challenging...
November 2017: Cornea
https://www.readbyqxmd.com/read/28994816/the-aortic-ring-co-culture-assay-a-convenient-tool-to-assess-the-angiogenic-potential-of-mesenchymal-stromal-cells-in-vitro
#11
Farwah Iqbal, Yarden S Gratch, Peter Szaraz, Clifford L Librach
Angiogenesis is a complex, highly regulated process responsible for providing and maintaining adequate tissue perfusion. Insufficient vasculature maintenance and pathological malformations can result in severe ischemic diseases, while overly abundant vascular development is associated with cancer and inflammatory disorders. A promising form of pro-angiogenic therapy is the use of angiogenic cell sources, which can provide regulatory factors as well as physical support for newly developing vasculature. Mesenchymal Stromal Cells (MSCs) are extensively investigated candidates for vascular regeneration due to their paracrine effects and their ability to detect and home to ischemic or inflamed tissues...
September 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28993066/clinical-and-microbiological-profile-of-infectious-keratitis-in-an-area-of-madrid-spain
#12
Soraya Mediero, Ana Boto de Los Bueis, Karina Spiess, Mariana Díaz-Almirón, Almudena Del Hierro Zarzuelo, Isabel Villalaín Rodes, Adela García Perea
INTRODUCTION: To study antibiotic susceptibility in bacterial keratitis (BK), its profile over 10 years and its influence on ophthalmological practice. METHODS: Retrospective review of BK with positive corneal scraping over a 10-year period. Risk factors for keratitis, visual acuity (VA), empirical topical treatment, corneal infection characteristics and outcomes were analyzed for BK due to Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Pseudomonas aeruginosa and Propionibacterium acnes...
October 6, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28991852/preparation-and-biomechanical-properties-of-an-acellular-porcine-corneal-stroma
#13
Qing Li, Hongmei Wang, Zhenye Dai, Yichen Cao, Chuanyu Jin
PURPOSE: To construct an acellular porcine corneal stroma (aPCS) as a human corneal stroma alternative and to further explore its biomechanical properties. METHODS: A combination of DNA-RNA enzymes and ultrasound technology was used to strip the native porcine corneal cells. The microstructure of aPCS was observed by H&E staining, DAPI staining, and α-Gal tests. The mechanical properties were detected by a tension machine. Cytotoxicity of aPCS was measured by the MTT assay...
November 2017: Cornea
https://www.readbyqxmd.com/read/28991620/new-perspectives-on-the-detection-and-progression-of-keratoconus
#14
REVIEW
Antonio Martínez-Abad, David P Piñero
Laser refractive surgery has increased markedly in recent years, making the detection of corneal abnormalities extremely relevant. For this reason, an accurate diagnosis of clinical or subclinical keratoconus is critical. Corneal topography is the primary diagnostic tool for keratoconus detection, and pachymetry data and corneal aberrations are also commonly used. Recently, tomographic measurements using optical coherence tomography and corneal biomechanical indices have been used. In incipient and subclinical keratoconus, the use of a single parameter as a diagnostic factor is not sufficiently accurate...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28991055/keratoconus-progression-in-patients-with-allergy-and-elevated-surface-matrix-metalloproteinase-9-point-of-care-test
#15
Cosimo Mazzotta, Claudio Traversi, Pierfrancesco Mellace, Simone A Bagaglia, Silvio Zuccarini, Rita Mencucci, Soosan Jacob
PURPOSE: To assess keratoconus (KC) progression in patients with allergies who also tested positive to surface matrix metalloproteinase 9 (MMP-9) point-of-care test. METHODS: Prospective comparative study including 100 stage I-II keratoconic patients, mean age 16.7±4.6 years. All patients underwent an anamnestic questionnaire for concomitant allergic diseases and were screened with the MMP-9 point-of-care test. Patients were divided into two groups: patients KC with allergies (KC AL) and patients KC without allergies (KC NAL)...
October 4, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28988898/elevated-aqueous-cytokine-levels-in-eyes-with-ocular-surface-diseases
#16
Naohiko Aketa, Takefumi Yamaguchi, Teru Asato, Yukari Yagi-Yaguchi, Terumasa Suzuki, Kazunari Higa, Toshihide Kurihara, Yoshiyuki Satake, Kazuo Tsubota, Jun Shimazaki
PURPOSE: To evaluate cytokine and protein levels in the aqueous humor (AqH) of eyes with ocular surface diseases. DESIGN: Prospective consecutive case series. METHODS: This study includes 14 patients (62.4±13.7 years old) with chronic-phase ocular surface diseases (4 with ocular cicatricial pemphigoid, 5 with chemical burns, 2 with a thermal burn, 2 with Stevens-Johnson syndrome, and 1 with exposure keratitis), 14 matched patients without ocular surface disease (controls with corneal scar) and 30 patients who underwent cataract surgery (healthy controls)...
October 5, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28987448/fungal-keratitis
#17
REVIEW
T Bourcier, A Sauer, A Dory, J Denis, M Sabou
Fungal keratitis, or keratomycoses, are corneal infections which must be considered in cases of corneal trauma, prior corneal surgery, chronic ocular surface disease, topical corticosteroids or contact lens wear. Filamentous fungi or yeasts may be involved. Presenting clinical features such as corneal infiltrates with feathery edges and/or raised surface, intact epithelium with deep stromal involvement, satellite lesions, endothelial plaques, lack of improvement with antibiotics and worsening with steroids are suggestive of fungal keratitis...
October 4, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28986623/-health-related-quality-of-life-after-implantation-of-a%C3%A2-keratoprosthesis-with-biological-haptic
#18
A Frings, S Schrader, K Hille, I Staab, G Geerling
BACKGROUND: Many studies report comparatively good long-term results among patients with keratoprostheses with biological haptic. However, overall costs are correspondingly high. A clear cost-benefit relationship is therefore desirable. OBJECTIVE: This study investigates health-related quality of life after implantation of a keratoprosthesis with biological haptic. MATERIALS AND METHODS: We present a retrospective analysis of medical data of 25 patients treated between 1996 and 2006 at the Department of Ophthalmology, University Hospital Homburg/Saar and the Klinikum Offenburg...
October 6, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28985735/objective-and-subjective-diagnostic-parameters-in-the-fellow-eye-of-unilateral-keratoconus
#19
Eman A Awad, Waleed A Abou Samra, Magda A Torky, Amr M El-Kannishy
BACKGROUND: Keratoconus (KC) is usually a bilateral corneal ectatic disease. For significant asymmetric presentation (so called unilateral KC), the fellow eye has the mildest and earliest form of the disease, which is typically called forme fruste keratoconus. The aim of this study was to evaluate the sensitivity and specificity of parameters derived from a Scheimpflug imaging system (Pentacam) as well as the changes in the quality of mesopic vision in the apparently normal fellow eye (forme fruste) to detect the earliest and most sensitive parameters...
October 6, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28983876/novel-missense-lcat-gene-mutation-associated-with-an-atypical-phenotype-of-familial-lcat-deficiency-in-two-portuguese-brothers
#20
I Castro-Ferreira, Rute Carmo, Sérgio Estrela Silva, Otília Corrêa, Susana Fernandes, Susana Sampaio, Rodrigues-Pereira Pedro, Augusta Praça, João Paulo Oliveira
Familial lecithin-cholesterol acyltransferase deficiency (FLD) is a rare recessive disorder of cholesterol metabolism, caused by loss-of-function mutations in the human LCAT gene, leading to alterations in the lipid/lipoprotein profile, with extremely low HDL levels.The classical FLD phenotype is characterized by diffuse corneal opacification, haemolytic anaemia and proteinuric chronic kidney disease (CKD); an incomplete form, only affecting the corneas, has been reported in a few families worldwide.We describe an intermediate phenotype of LCAT deficiency, with CKD preceding the development of corneal clouding, in two Portuguese brothers apparently homozygous for a novel missense LCAT gene mutation...
October 6, 2017: JIMD Reports
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