38,943 results match your criteria Iris Prolapse

Insights on the role of periphytic biofilm in synergism with Iris pseudacorus for removing mixture of pharmaceutical contaminants from wastewater.

J Hazard Mater 2021 Jun 8;418:126349. Epub 2021 Jun 8.

Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea. Electronic address:

The potential of Iris pseudacorus and the associated periphytic biofilm for biodegradation of two common pharmaceutical contaminants (PCs) in urban wastewater was assessed individually and in consortium. An enhanced removal for sulfamethoxazole (SMX) was achieved in consortium (59%) compared to individual sets of I. pseudacorus (50%) and periphytic biofilm (7%) at concentration of 5 mg L. Read More

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Scleral-fixated intraocular lens implants-evolution of surgical techniques and future developments.

Eye (Lond) 2021 Jun 11. Epub 2021 Jun 11.

Vitreoretinal Service, Moorfields Eye Hospital, London, UK.

Varied options are available for the implantation of secondary intraocular lens implants in the absence of zonular or capsular support. Loss of the capsule can occur in the context of complicated cataract surgery, trauma or inherited conditions such as Marfan syndrome or pseudoexfoliation. Approaches to overcome this include optical measures such as the use of spectacles or contact lenses, and surgical therapy incorporating the use of anterior chamber, iris-fixated or scleral-fixated lenses. Read More

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Anterior chamber angle features in primary congenital glaucoma infants using hand-held anterior segment-oct.

Eye (Lond) 2021 Jun 11. Epub 2021 Jun 11.

Faculty of Medicine, Ophthalmology department, Cairo University, Cairo, Egypt.

Purpose: To describe anterior chamber angle (ACA) structures and parameters in primary congenital glaucoma (PCG) and normal infant eyes, using Hand-held anterior segment optical coherence tomography (HH AS-OCT), as an in-office, non-contact technique.

Methods: Normal and PCG-infants <24 months were examined, using HH AS-OCT (RTVue RT- 100, Optovue Inc., Fremont, CA). Read More

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Accelerated Discovery of α-Cyanodiarylethene Photoswitches.

J Am Chem Soc 2021 Jun 11. Epub 2021 Jun 11.

DWI-Leibniz Institute for Interactive Materials & Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstrasse 50, Aachen 52074, Germany.

Cyanodiarylethene chromophores are able to undergo constitutional exchange via dynamic covalent chemistry (DCC). During this process, the central ethylene bridge of the molecular scaffold can be broken and thereby enables the assembly of a new combination of aryl moieties around the reformed ethylene bridge. The reversible C═C double bond exchange has exemplarily been investigated using α-cyanostilbenes. Read More

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Optical Coherence Tomography Angiography Findings of Iris Ischemia and Reperfusion in Cytomegalovirus Panuveitis.

Ocul Immunol Inflamm 2021 Jun 11:1-4. Epub 2021 Jun 11.

Eye Clinic, Department of Biomedical and Clinical Science "Luigi Sacco", Sacco Hospital, University of Milan, Milan, Italy.

: To report a case of iris ischemia in an eye affected by Cytomegalovirus (CMV)-related Chronic Retinal Necrosis (CRN) with partial reperfusion after antiviral therapy demonstrated by optical coherence tomography angiography (OCTA).: Retrospective case report. Multimodal imaging was performed at each follow-up visits. Read More

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Potential susceptibility of six aquatic plant species to infection by five species of .

Plant Dis 2021 Jun 11. Epub 2021 Jun 11.

Clemson University, Plant & Environmental Sciences, E-143 Poole Agricultural Center, Clemson, South Carolina, United States, 29634-0310;

Investigations of the susceptibility of aquatic plants to species of are limited. Therefore, the objective of this study was to assess the potential susceptibility of six aquatic plant species, frequently used in constructed wetlands or vegetated channels, to infection by five species of commonly found at nurseries in the southeastern United States. In a greenhouse experiment, roots of each plant species (, , 'Rising Sun', , , and ) growing in aqueous solutions were exposed to zoospores of each of the species of (, , , , and ). Read More

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Early Surgical Intervention for Neovascular Glaucoma in a Patient with Diabetes.

Cureus 2021 Jun 3;13(6):e15420. Epub 2021 Jun 3.

Ophthalmology Department, Salmaniya Medical Complex, Manama, BHR.

Neovascular glaucoma (NVG) is a cause of blindness in patients with proliferative diabetic retinopathy (PDR) and remains a clinical challenge. It results from vascular endothelial growth factor (VEGF) expression, which occurs in cases of severe retinal ischemia. Early detection and immediate comprehensive management, including early surgical intervention, are essential to maintain good intraocular pressure (IOP) control and achieve the best visual outcome, as presented in this case. Read More

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Band gap engineering in blended organic semiconductor films based on dielectric interactions.

Nat Mater 2021 Jun 10. Epub 2021 Jun 10.

Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universität Dresden, Dresden, Germany.

Blending organic molecules to tune their energy levels is currently being investigated as an approach to engineer the bulk and interfacial optoelectronic properties of organic semiconductors. It has been proven that the ionization energy and electron affinity can be equally shifted in the same direction by electrostatic effects controlled by blending similar halogenated derivatives with different energetics. Here we show that the energy gap of organic semiconductors can also be tuned by blending. Read More

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The inhibition of inducible nitric oxide production in lipopolysaccharide-stimulated rat macrophages and in silico studies by flavonoids from Iris spuria L. rhizomes.

J Ethnopharmacol 2021 Jun 7:114311. Epub 2021 Jun 7.

Pharmacognosy Department, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt; Pharmacognosy Department, College of Pharmacy, Taif University, Taif, Saudi Arabia.

Ethnopharmacological Relevance: Iris is the largest genus in the family Iridaceae. Iris plants are distributed in tropical regions of the world. They are used as ornamentals and traditionally used to treat a variety of ailments. Read More

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Anterior Chamber Measurements in Healthy Children: A Cross-Sectional Study Using Optical Coherence Tomography.

Transl Vis Sci Technol 2021 May;10(6):13

University of Leicester Ulverscroft Eye Unit, Department of Neuroscience, Psychology and Behaviour, University of Leicester, Leicester, UK.

Purpose: To establish anterior chamber measurements in children and investigate the influence of demographic factors on anterior chamber development.

Methods: Handheld optical coherence tomography was used to scan the anterior chamber of participants' eyes, without sedation. ImageJ was used to generate quantitative anterior chamber measurements, including central corneal thickness (CCT), anterior chamber width, trabecular meshwork length (TML), Schwalbe's line-angle opening distance (SL-AOD), and trabecular iris surface area (SL-TISA). Read More

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Classical Gravitational Bremsstrahlung from a Worldline Quantum Field Theory.

Phys Rev Lett 2021 May;126(20):201103

Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, 14476 Potsdam, Germany.

Using the recently established formalism of a worldline quantum field theory description of the classical scattering of two spinless black holes, we compute the far-field time-domain waveform of the gravitational waves produced in the encounter at leading order in the post-Minkowskian (weak field but generic velocity) expansion. We reproduce the previous results of Kovacs and Thorne in a highly economic way. Then, using the waveform, we extract the leading-order total radiated angular momentum and energy (including differential results). Read More

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Intraocular lens extraction using the cartridge pull-through technique.

J Cataract Refract Surg 2021 May 10. Epub 2021 May 10.

Tane Memorial Eye Hospital(Sachiko Fukuoka, MD, Taiga Kinoshita, MD, Toshiya Sakurai, MD) Aoba Eye Clinic(Shinichi Morita, MD).

Abstract: Current intraocular lens (IOL) explantation techniques are limited to cutting the optic and removing the pieces through a small incision, or folding single piece acrylic IOLs using a two-handed technique. Poor execution of IOL explantation can result in injury to intraocular structures, including the corneal endothelium and iris. The minimally invasive "cartridge pull-through technique" was invented, using a cartridge for IOL implantation and novel forceps optimized for secure grasping of the IOL for removal. Read More

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Development of revised diagnostic criteria for Fuchs' uveitis syndrome in a Chinese population.

Br J Ophthalmol 2021 Jun 9. Epub 2021 Jun 9.

University Eye Clinic Maastricht, Maastricht, The Netherlands.

Background/aims: Fuchs' uveitis syndrome (FUS) is one of the frequently misdiagnosed uveitis entities, which is partly due to the absence of internationally recognised diagnostic criteria. This study was performed to develop and evaluate a set of revised diagnostic criteria for FUS.

Methods: The clinical data of Chinese patients with FUS and patients with non-FUS were collected and analysed from a tertiary referral centre between April 2008 and December 2020. Read More

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Surgical membranectomy with modified incision and capsulotomy microscissors for persistent pupillary membrane.

Ann Palliat Med 2021 May;10(5):5619-5626

Shenzhen Eye Hospital, Shenzhen Eye Hospital affiliated to Jinan University, School of Optometry, Shenzhen University, Shenzhen, China.

Background: To evaluate the visual outcome and complications of surgical membranectomy with modified incision and capsulotomy microscissors in patients with persistent pupillary membrane (PPM).

Methods: We enrolled eight eyes with PPM in six patients and performed surgical membranectomy with modified incision located near the limbus and corresponding to the middle of the densest membrane strands. Strands near the collarette of the iris were then cut using capsulotomy microscissors and thick strands were removed with capculorhexis forceps. Read More

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A system review and meta-analysis of the treatment of acute angle-closure glaucoma under optical coherence tomography.

Ann Palliat Med 2021 May;10(5):5659-5670

Department of Ophthalmology, Affiliated Hospital of Hebei University, Baoding, China.

Background: A meta-analysis was conducted to investigate the value of treatment-related indicators of acute angle-closure glaucoma (AACG) based on optical coherence tomography (OCT) to evaluate the curative effect.

Methods: Articles on the treatment of AACG in clinical research of OCT published from January 2010 to June 2020 were retrieved from the PubMed, Web of Science, and Spring databases. RevMan 5. Read More

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Therapy of uveal melanoma A Review.

Cesk Slov Oftalmol 2020 ;1(Ahead of print):1-13

The aim of intraocular melanoma therapy is to achieve local tumor control, reduce the risk of metastasis development, preserve the eyeball and possibly the visual function of the eye. The choice of therapeutic approach requires a comprehensive view and individual approach to each patient with uveal melanoma. Factors considered include local finding (location, tumor size and shape, tumor activity, central visual acuity, intraocular complications), age and the patients overall physical and psychological condition, as well as the patients wishes. Read More

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Longitudinal genotype-phenotype analysis in 86 PAX6-related aniridia patients.

JCI Insight 2021 Jun 8. Epub 2021 Jun 8.

Department of Development, Ageing and Disease, UCL Institute of Ophthalmology, London, United Kingdom.

Aniridia is most commonly caused by haploinsufficiency of the PAX6 gene, characterised by variable iris and foveal hypoplasia, nystagmus, cataracts, glaucoma and aniridia related keratopathy (ARK). Genotype-phenotype correlations have previously been described, however detailed longitudinal studies of aniridia are less commonly reported. We identified eighty-six patients from sixty-two unrelated families with molecularly confirmed heterozygous PAX6 variants from a United Kingdom (UK)-based single-centre ocular genetics service. Read More

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Phytoremediation potential of three terrestrial plant species for removal of atrazine, azoxystrobin, and imidacloprid.

Int J Phytoremediation 2021 Jun 7:1-9. Epub 2021 Jun 7.

Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, USA.

Pesticides can move off-target resulting in contamination of sensitive water bodies and causing adverse effects on inhabiting species. Through best management practices, such as the implementation of vegetative buffer strips, off-target movement of pesticides can be decreased, and compound degradation can be increased via phytoremediation. In this study, blueflag iris (), broomsedge () and switchgrass () were planted in soil treated with one of three commonly used pesticides. Read More

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Iris epithelium detachment - An uncommon complication of Nd:YAG laser capsulotomy.

Am J Ophthalmol Case Rep 2021 Sep 23;23:101122. Epub 2021 May 23.

Department of Ophthalmology, Aarhus University Hospital, DK-8200, Aarhus N, Denmark.

Purpose: To report a case of iris epithelium detachment following Nd:YAG laser capsulotomy.

Observations: We describe the case of an 81 year old woman who developed hyphema and detachment of the iris epithelium following standard Nd:YAG laser capsulotomy. The detachment was readily visualized using anterior segment OCT. Read More

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September 2021

Etiology, Treatment Patterns, and Outcomes for Choroidal Neovascularization in the Pediatric Population: an IRIS Registry Study.

Ophthalmol Retina 2021 Jun 3. Epub 2021 Jun 3.

Retina and Vitreous of Texas, Houston, TX.

Objective: Choroidal neovascularization (CNV) is a rare, but devastating cause of vision loss in children with the majority of current publications limited to small case series. Utilizing a large clinical registry allows us to understand the most common etiologies of this disease and visual outcomes.

Design: Retrospective analysis. Read More

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Iris metastasis as the initial presentation of metastatic esophageal cancer diagnosed by fine needle aspiration biopsy: A case report.

Medicine (Baltimore) 2021 Jun;100(22):e26232

Department of Ophthalmology, Keio University School of Medicine.

Rationale: Metastasis of neoplasms to the eye is quite uncommon. In this case report, we describe a patient where primary esophageal cancer was diagnosed by fine needle aspiration biopsy (FNAB) of an iris tumor.

Patient Concerns: A 70-year-old male complained of redness and discomfort in the right eye. Read More

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Allergenic risk assessment of urban parks: Towards a standard index.

Environ Res 2021 Jun 2;200:111436. Epub 2021 Jun 2.

Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.

Allergenicity indices are a powerful tool to assess the health hazard posed by urban parks to pollen allergic subjects. Nonetheless, only few indices have been developed and applied to urban vegetation in the last decade, and they were never compared nor standardised over the same dataset. To address this issue, in this paper the two best-known allergenicity indices, the Urban Green Zones Allergenicity Index (I) and the Specific Allergenicity Index (SAI), have been calculated for the same park (the Botanical Garden of Bologna), collecting vegetation data through both systematic sampling and arboreal census. Read More

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Surgical treatment of canine and feline descemetoceles, deep and perforated corneal ulcers with autologous buccal mucous membrane grafts.

Vet Ophthalmol 2021 Jun 4. Epub 2021 Jun 4.

Department of Veterinary Science, University of Pisa, Pisa, Italy.

Objectives: To report the surgical technique and postoperative outcome of corneal repair with autologous buccal mucous membrane grafts in dogs and cats with descemetoceles, deep corneal ulcers, and perforated corneal ulcers with or without iris prolapse.

Animal Studied: Twelve cats (13 eyes) and fourteen dogs (14 eyes) were treated.

Procedures: Grafts were harvested from the unpigmented superior labial mucosa using a biopsy punch. Read More

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Ophthalmia nodosa secondary to multiple intraocular caterpillar hairs in a 2-year-old girl.

Saudi J Ophthalmol 2020 Jul-Sep;34(3):230-232. Epub 2021 Feb 27.

Department of Ophthalmology, Dhahran Eye Specialist Hospital, Dhahran, Saudi Arabia.

A 2-year-old girl presented with pain, itching, photophobia, and tearing in her left eye. These symptoms started after contact with a caterpillar. The patient was initially taken to another hospital, where the local ophthalmologist prescribed topical prednisolone acetate 1%, a topical antibiotic, and cyclopentolate 1% eye drops. Read More

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February 2021

Comparison of retropupillary fixated iris claw lens versus sclera fixated lens for correction of pediatric aphakia secondary to ectopia lentis.

Oman J Ophthalmol 2021 Jan-Apr;14(1):20-26. Epub 2021 Feb 27.

Jasti V Ramanamma, Children's Eye Care Center, L V Prasad Eye Institute, Hyderabad, India.

Aim: To evaluate the postoperative visual acuity and complications in eyes with ectopia lentis in children who underwent lens removal and then implantation of retropupillary fixated iris claw lens versus scleral fixated intraocular lens (SFIOL) implantation.

Materials And Methods: A retrospective analysis of pediatric cases who presented with lens subluxation secondary to ectopia lentis and who underwent lens extraction (57 eyes of 38 patients) with either retropupillary iris fixated intraocular lens (IOL) implantation (Group A - 36 eyes of 20 patients) and SFIOL implantation (Group B - 21 eyes of 18 patients) was done over a period of 5 years from March 2010 to February 2015. The main outcome measures were preoperative and postoperative best-corrected visual acuity (BCVA) and secondary postoperative complications. Read More

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February 2021

Tube placement using 'IRIS': A pilot assessment of its utility and safety.

Intensive Crit Care Nurs 2021 May 31:103077. Epub 2021 May 31.

Department of Anaesthetics, Level 3, Gate 38, Brunel Building, Southmead Hospital Bristol, BS105NB, United Kingdom. Electronic address:

Introduction: Most critically ill patients have a feeding tube placed blindly, but 0.5% result in a major lung complication because misplacement is only detected at the end of procedure. Real-time guided tube placement may pre-empt such complications. Read More

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Mutational spectrum of NF1 gene in 24 unrelated Egyptian families with neurofibromatosis type 1.

Mol Genet Genomic Med 2021 Jun 3:e1631. Epub 2021 Jun 3.

Medical Molecular Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt.

Background: Neurofibromatosis 1 (NF1; OMIM# 162200) is a common autosomal dominant genetic disease [incidence: ~1:3500]. In 95% of cases, clinical diagnosis of the disease is based on the presence of at least two of the seven National Institute of Health diagnostic criteria. The molecular pathology underlying this disorder entails mutation in the NF1 gene. Read More

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Diagnostic methods and therapeutic options of uveal melanoma with emphasis on MR imaging-Part I: MR imaging with pathologic correlation and technical considerations.

Insights Imaging 2021 Jun 3;12(1):66. Epub 2021 Jun 3.

Department of Medical Surgical Sciences and Advanced Technologies "G.F. Ingrassia" - Radiology I Unit, University Hospital Policlinico "G. Rodolico-San Marco", Via Santa Sofia 78, 95123, Catania, Italy.

Uveal melanoma is a malignant neoplasm that derives from pigmented melanocytes of the uvea and involves, in order of decreasing prevalence, the choroid, ciliary body and iris. Its prognosis is related to histopathologic and genetic features, tumor size and location, extraocular extension. The diagnosis is fundamentally based on clinical evaluation (ophthalmoscopy, biomicroscopy) and ultrasonography. Read More

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The formation mechanism and chirality evolution of chiral carbon dots prepared radical assisted synthesis at room temperature.

Nanoscale 2021 Jun 3. Epub 2021 Jun 3.

Nanomaterials Research Group, Department of Biotechnology and INSTM, RU of Verona, University of Verona, Strada le Grazie 15, Verona, Italy.

We report on a Cu(ii) catalyzed process for the production of cysteine based chiral carbon dots; the process does not require any thermal treatment and the carbon dot formation is driven by the production of reactive radical species that are generated in the reaction media by the catalytic role played by the multivalent transition metal. The nanomaterial presents a well-defined chirality and the enantioselectivity of the synthesis is proved by the isolation of both the carbon dot enantiomers. We focused our attention on the processes that take place during the carbon dot formation and the relationship with the structure of the organic starting material. Read More

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Cross-Talk Between Mesenchymal Stromal Cells (MSCs) and Endothelial Progenitor Cells (EPCs) in Bone Regeneration.

Front Cell Dev Biol 2021 13;9:674084. Epub 2021 May 13.

Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium.

Bone regeneration is a complex, well-orchestrated process based on the interactions between osteogenesis and angiogenesis, observed in both physiological and pathological situations. However, specific conditions (e.g. Read More

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