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Current Eye Research

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https://www.readbyqxmd.com/read/28358253/comparison-of-accelerated-corneal-collagen-cross-linking-types-for-treating-keratoconus
#1
Yusuf Yıldırım, Onur Olcucu, Zehra Karaagac Gunaydin, Alper Ağca, Engin Bilge Ozgurhan, Cengiz Alagoz, Cagri Mutaf, Ahmet Demirok
PURPOSE: To compare the results of different protocols for accelerated corneal collagen cross-linking (CXL) in patients with progressive keratoconus. MATERIALS AND METHOD: This prospective comparative study involved 40 patients treated with intended UV-A radiance of 5.4 J/cm(2) in 74 eyes (Group 1) and 42 patients treated with radiance of 7.2 J/cm(2) in 72 eyes (Group 2). Visual acuity, subjective manifest refraction and corneal topography were analyzed before and 12 months after surgery in both groups...
March 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28358247/negative-effects-of-acid-violet-17-and-mbb-dual-in-vitro-on-different-ocular-cell-lines
#2
José Hurst, Sven Schnichels, Martin S Spitzer, Karl-Ulrich Bartz-Schmidt, Marie-Louise Farecki, Peter Szurman, Kai Januschowski
PURPOSE: Vital dyes have become a clinical standard during vitrectomy to visualize anatomical structures. It was the aim of this study to test the effect of two vital dyes (AV 17-M with 5% mannitol and MBB Dual) on different intraocular cells, to see whether in vitro test can be used as reliable preclinical testing tool. METHODS: Cell morphology was assessed via phase contrast pictures, cell viability via MTS assay and total cell amount via crystal violet staining...
March 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28358222/valacyclovir-as-initial-treatment-for-acute-retinal-necrosis-a-pharmacokinetic-modeling-and-simulation-study
#3
Tao Liu, Aabha Jain, Michael Fung, Christopher Vinnard, Vijay Ivaturi
PURPOSE: Acute retinal necrosis (ARN) is a feared complication of infectious retinitis most commonly caused by varicella zoster virus (VZV). We performed a pharmacokinetic modeling and simulation study by integrating the existing understanding of physiology with previously published data to evaluate the vitreal penetration of oral valacyclovir for the treatment of ARN, under various dosing scenarios. METHOD: We compared different oral valacyclovir dosing regimens with intravenous acyclovir...
March 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28358220/vitreous-hyper-reflective-dots-in-optical-coherence-tomography-and-retinal-tear-in-patients-with-acute-posterior-vitreous-detachment
#4
Jong-Hyun Oh, Jaeryung Oh, Hyun Cheol Roh
PURPOSE: To report the presence of hyper-reflective dots in the vitreous cavity using spectral-domain optical coherence tomography (SD-OCT) in patients with acute symptomatic posterior vitreous detachment (PVD) and investigate their association with the presence of retinal tear. METHODS: The medical records of 77 patients with acute symptomatic PVD, who were examined between March 2013 and February 2015, were reviewed. The severity of vitreous hyper-reflective dots (VHDs) was graded using SD-OCT images, and the presence of retinal tear was assessed...
March 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28358216/evaluation-of-the-safety-and-tolerability-of-conjunctival-ring-for-posterior-segment-of-the-eye
#5
Satoshi Kinoshita, Takeshi Ohguchi, Kousuke Noda, Miyuki Murata, Shin-Ichi Yasueda, Haruka Obata, Toru Matsunaga, Tsutomu Fukushima, Atsuhiro Kanda, Susumu Ishida
PURPOSE: To evaluate the safety and tolerability of conjunctival rings (CRs), a novel device for drug delivery to the posterior segment of the eye. METHODS: In animal studies, CRs containing 5% dexamethasone sodium phosphate (DSP) or vehicle solution were placed on the right and left eyes of C57BL/6J mice, respectively. Contact lenses (CLs) containing vehicle solution were used as a control. Twenty-four hours after placement of the CRs, corneal fluorescein staining was graded based on the McDonald-Shadduck scoring system, ranging from 0 to 4...
March 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28346009/reactions-with-antisera-and-pathological-effects-of-staphylococcus-aureus-gamma-toxin-in-the-cornea
#6
Michael A Bierdeman, Angela M Torres, Armando R Caballero, Aihua Tang, Richard J O'Callaghan
PURPOSE: This study analyzed the toxicity of purified gamma-toxin from Staphylococcus aureus and the protectiveness of antisera to gamma-toxin in the rabbit cornea. MATERIALS AND METHODS: Gamma-toxin was purified from cultures of alpha-toxin deficient S. aureus strain Newman Δhla. Antisera to native gamma-toxin (Hlg) were produced in rabbits. These antisera and a commercial polyclonal antibody to recombinant HlgB (rHlgB) were analyzed for specificity and toxin neutralization...
March 27, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28339301/cultivation-of-human-oral-mucosal-explants-on-contact-lenses
#7
Barbara Zsebik, László Ujlaky-Nagy, Gergely Losonczy, György Vereb, Lili Takács
Purpose/Aim: Autologous cultivated oral mucosal (OM) epithelial transplantation has been successfully used as corneal epithelial replacement in bilateral limbal stem cell deficiency. Recently, lotrafilcon A contact lens (CL) surface was described as a suitable carrier for cultured stem cells in corneal epithelial transplantation. Our aim was to establish explant cultures from human OM on CL carriers that are free of animal-derived materials and feeder cells. MATERIALS AND METHODS: Human cadaveric 2 mm OM explants were sutured onto CL surfaces and cultivated with fetal calf serum (FCS) or human serum (HS) supplemented culture medium without feeder cells...
March 24, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28339297/long-term-effect-of-panretinal-photocoagulation-on-spectral-domain-optical-coherence-tomography-measurements-in-diabetic-retinopathy
#8
Haeng-Jin Lee, Tae-Seen Kang, Baek-Soo Kwak, Young-Joon Jo, Jung-Yeul Kim
PURPOSE: To evaluate the effects of panretinal photocoagulation on spectral domain optical coherence tomography measurements in diabetic retinopathy by comparing the thicknesses of the central macula, retinal nerve fiber layer, and ganglion cell layer, we used a Cirrus HD OCT® (Carl Zeiss Meditec, Dublin, CA, USA) in normal and diabetic retinopathy cohorts. METHODS: We analyzed patients who visited our retinal clinic between May 2013 and July 2014. The patients were classified into four groups: normal (Group A), diabetes without diabetic retinopathy (Group B), severe nonproliferative or proliferative diabetic retinopathy (Group C), and at least 3 years after panretinal photocoagulation treatment (Group D)...
March 24, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28328296/the-relationship-between-metabolic-syndrome-its-components-and-dry-eye-a-cross-sectional-study
#9
Sevil Karaman Erdur, Rukiye Aydin, Mustafa Ozsutcu, Oktay Olmuscelik, Mustafa Eliacik, Goktug Demirci, Mehmet Selim Kocabora
PURPOSE: The aim of this study was to evaluate tear osmolarity and tear film function and ocular surface changes in patients with metabolic syndrome. METHODS: 108 eyes of 64 patients with metabolic syndrome (group 1) and 110 eyes of 55 healthy individuals (group 2) were included in this cross-sectional study. All participants were evaluated using the Ocular Surface Disease Index (OSDI) questionnaire, Schirmer I test, tear film break-up time (TBUT), and tear osmolarity...
March 22, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28306392/effect-of-syringe-design-on-the-accuracy-and-precision-of-intravitreal-injections-of-anti-vegf-agents
#10
Elad Moisseiev, Jolene Rudell, Eric V Tieu, Glenn Yiu
PURPOSE: To evaluate the accuracy and precision of different syringe designs for intravitreal injection of anti-VEGF agents. METHODS: Volume output was measured from three syringe designs-1) 1.0 mL tuberculin syringe, 2) 1.0 mL syringe with low dead space plunger, and 3) 0.5 mL low-volume syringe-to deliver 50 µL of bevacizumab, ranibizumab, or aflibercept, each repeated four times by three different physicians for 108 total simulated injections. Volume output was calculated from difference in syringe weight before and after expelling the drug...
March 17, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28306361/visual-field-progression-is-associated-with-systemic-concentration-of-macrophage-chemoattractant-protein-1-in-normal-tension-glaucoma
#11
Na Young Lee, Min Hee Kim, Chan Kee Park
PURPOSE: To investigate the associations between endothelin-1 (ET-1) and macrophage chemoattractant protein-1 (MCP-1) levels and visual field (VF) progression in normal-tension glaucoma (NTG). METHODS: We conducted a prospective, longitudinal study in 71 patients with NTG. Blood samples from all subjects were assayed for ET-1 and MCP-1 concentrations, and baseline ophthalmic examinations, including the VF, were performed. Baseline data were compared with follow-up data over 3 years...
March 17, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28306352/evaluation-of-the-tear-function-tests-and-the-ocular-surface-in-first-time-users-of-silicone-hydrogel-contact-lenses
#12
Yelda Yildiz Tasci, Canan Gürdal, Ozge Sarac, Aykut Onusever
PURPOSE: To evaluate the effects of three different silicone hydrogel contact lenses (SHCL), (balafilcon A, senofilcon A, and comfilcon A) on tear function tests, corneal thickness, and ocular surface cytology in first time contact lens users. MATERIALS AND METHODS: In this prospective study, 120 eyes of 60 subjects were evaluated. Balafilcon A users were designated as group 1, senofilcon A users as group 2, and comfilcon A users as group 3. In all cases, before and after 6 months of contact lens wear, ocular surface disease index score (OSDI), tear breakup time (TBUT), Schirmer 1 test, central corneal thickness (CCT), central corneal epithelium thickness (CCET), and conjunctival impression cytology samples were evaluated...
March 17, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28306346/risk-factors-for-central-serous-chorioretinopathy-multivariate-approach-in-a-case-control-study
#13
Irini Chatziralli, Stamatina A Kabanarou, Efstratios Parikakis, Alexandros Chatzirallis, Tina Xirou, Panagiotis Mitropoulos
PURPOSE: The purpose of this prospective study was to investigate the potential risk factors associated independently with central serous retinopathy (CSR) in a Greek population, using multivariate approach. MATERIALS AND METHODS: Participants in the study were 183 consecutive patients diagnosed with CSR and 183 controls, matched for age. All participants underwent complete ophthalmological examination and information regarding their sociodemographic, clinical, medical and ophthalmological history were recorded, so as to assess potential risk factors for CSR...
March 17, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28157425/clinical-features-and-prognostic-factors-in-presumed-ocular-tuberculosis
#14
Cristhian A Urzua, Yrbani Lantigua, Sergio Abuauad, Paulina Liberman, Osvaldo Berger, Pablo Sabat, Victor Velasquez, Enzo Castiglione, Margarita Calonge
PURPOSE: To characterize the clinical features in patients with presumed ocular tuberculosis (TB) and determine prognostic factors of visual outcomes and complications in this disease. MATERIAL AND METHODS: Retrospective case series of 35 patients (29 females, 6 males) with presumed ocular TB from referral centers in Chile and Spain between 2002 and 2012. Medical records were reviewed, and data regarding clinical features, complications, best-corrected visual acuity (BCVA), duration of disease, extraocular manifestations, and therapy were retrieved...
February 3, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28157410/short-term-vitreoretinal-tamponade-with-heavy-liquid-following-surgery-for-giant-retinal-tear
#15
Maya Eiger-Moscovich, Assaf Gershoni, Ruth Axer-Siegel, Dov Weinberger, Rita Ehrlich
PURPOSE: To study the efficacy and outcomes of short-term postoperative vitreoretinal tamponade with perfluorocarbon heavy liquid in patients with giant retinal tear. MATERIALS AND METHODS: The study group consisted of 13 consecutive patients (13 eyes) who presented with giant retinal tear at a tertiary medical center in 2011-2015 and were treated with vitrectomy followed by short-term tamponade with perfluorocarbon heavy liquid. A minimum of 3 months' follow-up was required for inclusion...
February 3, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28139163/comparison-of-autologous-serum-versus-preservative-free-artificial-tear-in-patients-with-dry-eyes-due-to-systemic-isotretinoin-therapy
#16
Uğur Yılmaz, Erkut Küçük, Çağdaş Koç, Enes Gökler
PURPOSE: To investigate dry eye development in the patients receiving systemic retinoic acid therapy and to compare effectiveness of Autologous Serum (AS) and preservative free artificial tear (PFAT) in the patients with dry eye disease. METHOD: This prospective, crossover, double blind study was conducted on patients who have dry eyes due to systemic isotretinoin treatment for different indications. Patients detected as having dry eye during systemic isotretinoin treatment were included to our study...
January 31, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28139159/light-induced-retinopathy-young-age-protects-more-than-ocular-pigmentation
#17
Anna Polosa, Hyba Bessaklia, Pierre Lachapelle
PURPOSE: The purpose of this study was to compare the efficacy that ocular melanin confers in protecting the retina of juvenile and adult rats exposed to a bright luminous environment. METHODS: Juvenile (JLE) and adult (ALE) Long-Evans pigmented rats were thus exposed to a bright cyclic light (10,000lux; white light) from postnatal day 14-28 or for 6 consecutive days, respectively. Flash electroretinograms (ERG) and retinal histology were performed at different predetermined ages, post-light exposure...
January 31, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28139154/safety-and-efficacy-of-a-membrane-tube-type-glaucoma-shunt-device-an-animal-trial
#18
Dai Woo Kim, Young Hoon Hwang, Byung Heon Ahn, Eun-Kyung Lee, Chang-Sik Kim
PURPOSE: To evaluate the safety and efficacy of a membrane-tube-type glaucoma shunt device (MT-device), which was developed to control intraocular pressure (IOP) with a lower chance of complications than conventional glaucoma surgery, in a rabbit model. MATERIALS AND METHODS: The MT-device consists of an expanded polytetrafluoroethylene membrane (thickness 0.2 mm, area 2.5 × 2.5 mm(2)) and a tube (internal diameter 76 µm, external diameter 175.5 µm, length 7 mm) attached to the membrane...
January 31, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28139150/efficacy-of-purtscher-s-retinopathy-treatments-a-systematic-review
#19
Duosheng Xia, Xiaomei Chen, Qi Zhou, Shujun Xiao, Yang Yu, Yadong Wang, Gang Du, Haixiang Huang, Wenfang Zhang, Yaolong Chen
OBJECTIVE: The aim of this review is to evaluate the efficacy of available Purtscher's Retinopathy treatments. MATERIALS AND METHODS: In order to collect single-case reports, electronic searches were conducted in several databases including PubMed, Embase, Web of Science, China National Knowledge Infrastructure, SinoMed, VIP, and WanFang in the Electronic Theses and Dissertations Center. In VIP and Wanfang, we also traced the references of included articles. Risk of bias was evaluated using a tool adapted from the Cochrane Risk of Bias Tool...
January 31, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28139142/relation-between-ocular-comfort-arachidonic-acid-mediators-and-histamine
#20
Simin Masoudi, Zhenjun Zhao, Mark Willcox
PURPOSE: Contact lenses are associated with discomfort during wear. This may be the result of stimulation of the ocular surface and production of pro-inflammatory mediators which are then released into the tears. This study examined changes in the concentration in tears of arachidonic acid metabolites (AAM) prostaglandins, cysteinyl leukotrienes, and resolvin-D1, as well as histamine in a general contact lens population in the morning and evening. METHOD: Tears were collected twice a day (morning and evening) for up to 10 days on two different occasions (with and without contact lens wear) from 30 experienced contact lens wearers for analysis of AAM and a separate group (N = 33) for analysis of histamine...
January 31, 2017: Current Eye Research
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