Search results for "Eye"
showing 10 items of 2511 documents
Femtosecond‑LASIK outcomes using the VisuMax®‑MEL® 80 platform for hyperopia and hyperopic astigmatism refractive surgery
2021
The present study evaluated the efficacy, the safety and the predictability of the Femtosecond laser-assisted in situ keratomileusis (Femto-LASIK) procedure for hyperopia and hyperopic astigmatism. We retrospectively analyzed the postoperative 12-month evolution of 593 eyes with hyperopia and hyperopic astigmatism that underwent Femto-LASIK treatment. The procedure was predictable and effective. No eye lost 2 lines of corrected distance visual acuity (CDVA), demonstrating a safety profile of the procedure. Nine percent of the eyes gained at least one line of CDVA. The accuracy of the spherical equivalent after 12 months was 74% within ±1.0 diopter (D) of emmetropia. The refractive outcomes …
Prevalence of visual impairment and refractive errors in an urban area of Mexico
2019
AIM: To determine the distribution of refractive errors in a school-age population in Quintana Roo (Mexico) in the framework of an international cooperation campaign for the prevention of blindness. METHODS: A sample of 2647 school-age children (ranging from 5 to 14 years old) with a mean age of 9.1±1.9 years old were tested by trained volunteers for distance visual acuity (VA) and refractive errors. The first screening examination included uncorrected distance visual acuity (UDVA) and VA with a +2.00 D lens. Inclusion criteria for a second complete cycloplegic eye examination performed by an optometrist were UDVA <20/25 (0.10 logMAR or 0.8 decimal) and/or VA with +2.00 D ≥20/25. RESULTS: A…
Visual and refractive outcomes in hyperopic pseudophakic patients implanted with a trifocal intraocular lens
2019
Jos&eacute; F Alfonso,1,2 Andr&eacute;s Fern&aacute;ndez-Vega-Cueto,1 Bel&eacute;n Alfonso-Bartolozzi,1 Ignacio Rodr&iacute;guez-U&ntilde;a,1 Robert Mont&eacute;s-Mic&oacute;3 1Corneal and Lens Surgery Department, Fern&aacute;ndez-Vega Ophthalmological Institute, Oviedo, Spain; 2Surgery Department, School of Medicine, University of Oviedo, Oviedo, Spain; 3Optics and Optometry and Vision Sciences Department, Faculty of Physics, University of Valencia, Valencia, SpainCorrespondence: Jos&eacute; F AlfonsoInstituto Oftalmol&oacute;gico Fern&aacute;ndez-Vega, Avda. Dres. Fern&aacute;ndez-Vega 114, Oviedo 33012, SpainTel +34 985 245533Fax +34 98…
Endothelial cells loss to the hyperopic pacients during phacoemulsification
2018
Introduction The phacoemulsification cataract surgery is the most frequently performed surgery and it generally improves vision in over 90% of the patients. Hyperopic patients are a challenge during phacoemulsification especially because of their short eyeball and shallow anterior chamber. A shallow anterior chamber is associated with overall reduction of the safe zone, which may lead to difficulty in creating the corneal incisions, harder capsulorhexis performing, or endothelial complications. Purpose The aim of the study was to present the endothelial cells loss after the phacoemulsification procedure in the hyperopic patients. Material and methods A number of 1775 patients operated in th…
Eye and cat scratch disease: A case series
2016
Resume Introduction La maladie des griffes du chat est une affection polymorphe, pouvant se manifester par des atteintes ophtalmologiques isolees. Nous rapportons les observations cliniques de sept cas, ayant presente une atteinte ophtalmologique posterieure de la maladie des griffes du chat. Observations Notre population comprenait sept patients, dont cinq femmes, d’âge median de 52 ans, avec une atteinte unilaterale dans trois cas. Une neuroretinite stellaire de Leber etait retrouvee chez six patients, un syndrome incomplet dans deux cas (soit un œdeme papillaire isole, soit un œdeme maculaire trainant) et associe a des foyers chorioretiniens dans un cas. Des foyers retiniens isoles ont e…
Characterization of Rabbit Mesenchymal Cell Attachment on Calcium Phosphate Surface
2014
In the current study, the effect of three different treated surfaces of hydroxyapatite and β-tricalcium phosphate on mesenchymal cell attachment has been investigated. Calcium phosphate powders have been synthesized, uniaxially pressed, polished and sintered. Mesenchymal cells have been seeded onto unpolished, polished and polished-thermally etched ceramic samples. The ceramic samples have been characterized by XRD, FTIR and SEM. Results have shown that the best cell attachment and morphology are on the unpolished surface indicating that relatively rough surface is better for cell application.
A new simple chromo-fluorogenic probe for NO2 detection in air.
2015
[EN] A new chromo-fluorogenic probe, consisting of a biphenyl derivative containing both a silylbenzyl ether and a N,N-dimethylamino group, for NO2 detection in the gas phase has been developed. A clear colour change from colourless to yellow together with an emission quenching was observed when the probe reacted with NO2. A limit of detection to the naked eye of about 0.1 ppm was determined and the system was successfully applied to the detection of NO2 in realistic atmospheric conditions.
ChemInform Abstract: Base-Catalyzed Isomerization of 2-Isoxazolines Enables a Two-Step Enantioselective Synthesis of β-Hydroxynitriles from Enals.
2011
Treatment of chiral isoxazoles with catalytic amounts of DBU results in efficient formation of optically active β-hydroxynitriles.
Loss of rod sensitivity and gene expression changes in the retina of fructose-fed insulin-resistant mice
2012
Purpose: Metabolic syndrome is of major concern in Western countries since it predisposes individuals to the development of diabetes. Insulin resistance is one of the biochemical features of the metabolic syndrome. Fructose feeding has been used to elicit insulin resistance in rodents. Our purpose was to characterize the functional and gene expression changes in the retina after long term feeding mice with a fructose-enriched diet.Methods: Control and ApoB100,LDLR-/- mice, a murine model of aging of the human retina, were fed with a 60%-rich fructose diet for 8 months. Scotopic single flash and Flicker electroretinograms were recorded to monitor the response of the retina to flash stimuli. …
Magnetofection of acoustically active „magnetic microspheres“ (Magnetobubbles) — Induction of angiogenesis via non-viral transfection of VEGF
2009
Adenoviral transduction of the VEGF gene in an oversized skin flap increases flap survival and perfusion. In this study we investigated the potential of magnetofection of magnetic lipospheres containing VEGF165-cDNA on survival and perfusion of ischemic skin flaps and evaluated the method with respect to the significance of applied magnetic field and ultrasound.