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laser in ophthalmology

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https://www.readbyqxmd.com/read/28532941/cataract-surgery-practices-in-the-united-states-veterans-health-administration
#1
Annika G Havnaer, Paul B Greenberg, Glenn C Cockerham, Melissa A Clark, Amy Chomsky
PURPOSE: To describe current cataract surgery practices within the United States Veterans Health Administration (VHA). SETTING: Veterans Health Administration hospitals in the U.S. DESIGN: Retrospective data analysis. METHODS: An initial e-mail containing a link to an anonymous 32-question survey of cataract surgery practices was sent to participants in May 2016. Two reminder e-mails were sent to nonresponders 1 week and 2 weeks after the initial survey was sent; the remaining nonresponders were called twice over a 2-week period...
April 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28532364/evolution-of-concepts-and-technologies-in-ophthalmic-laser-therapy
#2
Daniel Palanker
Ophthalmology was the first medical specialty to adopt lasers right after their invention more than 50 years ago, and they gradually revolutionized ocular imaging, diagnostics, therapy, and surgery. Challenging precision, safety, and selectivity requirements for ocular therapeutic and surgical procedures keep advancing the laser technologies, which in turn continue enabling novel applications for the preservation and restoration of sight. Modern lasers can provide single-cell-layer selectivity in therapy, submicrometer precision in three-dimensional image-guided surgery, and nondamaging retinal therapy under optoacoustic temperature control...
October 14, 2016: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28499051/safety-and-efficacy-of-ziv-aflibercept-in-the-treatment-of-refractory-diabetic-macular-edema
#3
Mohammed Ashraf, Hassan El Kayal, Ahmed A R Souka
BACKGROUND AND OBJECTIVE: To evaluate the safety and efficacy of ziv-aflibercept (Zaltrap; Sanofi-Aventis, Bridgewater, NJ/Regeneron Pharmaceuticals, Tarrytown, NY) in the treatment of refractory diabetic macular edema (DME). PATIENTS AND METHODS: Retrospective case series looking at the safety of ziv-aflibercept in patients with DME refractory to previous anti-vascular endothelial growth factor (VEGF) therapy. Detailed ophthalmologic examination, best-corrected visual acuity, and optical coherence tomography measurements were performed pre-switch, as well as at each monthly follow-up visit...
May 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28461870/assessment-of-refractive-outcome-of-femtosecond-assisted-lasik-for-hyperopia-correction
#4
Mohamed Tarek El-Naggar, Dikran Gilbert Hovaghimian
INTRODUCTION: Laser vision correction for hyperopia is challenging. The purpose of the study was to assess the refractive outcomes of femtosecond-assisted laser in situ keratomileusis (LASIK) for hyperopic correction using wavefront-optimized ablation profiles. METHODS: This retrospective case series study included 20 Egyptian patients (40 eyes) with hyperopia or hyperopic astigmatism with a mean manifest refraction spherical equivalent (MRSE) of +2.55D±1.17 (range from +1...
March 2017: Electronic Physician
https://www.readbyqxmd.com/read/28442691/laser-assisted-techniques-for-penetrating-and-nonpenetrating-glaucoma-surgery
#5
Noa Geffen, Ehud I Assia, Shlomo Melamed
The use of lasers is slowly pervading all subspecialties of ophthalmology, especially glaucoma, and lasers are slowly replacing many glaucoma surgeries. Conventional trabeculectomy has so far remained the gold standard for glaucoma surgery and efforts are being made to develop a new surgical approach to overcome the limited success rate and safety issues of this traditional procedure. There is a great interest in using lasers for ab interno and ab externo penetrating and nonpenetrating filtering surgery. Theoretically, laser-assisted surgery offers the potential advantage of improved accuracy, repeatability, and safety, although the main drawback of using lasers for this purpose is the potential collateral damage induced by the scattered energy...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28412801/-preliminary-report-on-the-application-of-femtosecond-laser-assisted-anterior-capsulotomy-in-intumescent-white-cataract-surgery
#6
T T Peng, Y Wang, X Y Bao
Objective: To assess the effect of femtosecond laser-assisted anterior capsulotomy in intumescent white cataract surgery. Methods: Retrospective case series study. One hundred and fifty cataract patients (150 eyes) from June 2014 to June 2015 in Wuhan Aier ophthalmology hospital were enrolled in this study. They were divided into three groups: 50 intumescent white cataract patients (50 eyes) in the study group were performed femtosecond laser-assisted capsulotomy (LenSx system) operation selectively. Fifty intumescent white cataract patients (50 eyes) underwent normal manual continuous circular capsulorhexis as the control group 1...
April 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28405489/three-dimensional-optical-coherence-tomography-imaging-and-treatment-of-glaucomatous-optic-nerve-head-defects-associated-with-schisis-like-maculopathy
#7
Zafer Öztaş, Jale Menteş, Halil Ateş, Serhad Nalçacı
We present the three-dimensional (3D) spectral-domain optical coherence tomography (SD-OCT) findings of schisis-like maculopathy associated with structural changes of the optic nerve (ON) head as well as the treatment outcomes of a case of advanced glaucoma. In addition to ophthalmological examination, B-scan and 3D-SD-OCT images of the ON head, peripapillary retina, and the macula were obtained. The B-scan images only detected typical retinoschisis findings. However, the 3D-SD-OCT images of the ON head revealed defects of various sizes, shapes, and depths at the outer wall of the prelaminar and laminar regions of the ON canal...
April 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28400888/macular-evaluation-w%C3%A4-th-spectral-domain-type-optic-coherence-tomography-in-eyes-with-acute-nonarteritic-ischemic-optic-neuropathy-at-the-presentation-visit
#8
Oya Donmez, Gamze Kocaoglu, Aylin Yaman, Meltem Soylev Bajin, Ali Osman Saatci
PURPOSE: To evaluate the macula with spectral domain type optic coherence tomography (OCT) in eyes with acute nonarteritic anterior ischemic optic neuropathy (NAION) at the presentation visit. METHODS: Medical charts of the 133 patients who received the diagnosis of acute NAION between January 2008 and July 2014 at the Neuro-ophthalmology unit of Dokuz Eylul University were reviewed retrospectively. Sixtythree patients within 30 days of symptom onset with available baseline spectral domain type macular OCT were included in this study...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28372860/treatment-patterns-for-myopic-choroidal-neovascularization-in-the-united-states-analysis-of-the-iris-registry
#9
Jeffrey Willis, Lawrence Morse, Susan Vitale, David W Parke, William L Rich, Flora Lum, Ronald A Cantrell
PURPOSE: To characterize treatment patterns and outcomes in eyes with treatment-naïve myopic choroidal neovascularization (mCNV) in the United States. DESIGN: Retrospective cohort study. PARTICIPANTS: Individuals aged 18 years and older seen in clinics participating in the American Academy of Ophthalmology's IRIS (Intelligent Research in Sight) Registry. METHODS: We analyzed data from the IRIS Registry, from January 1, 2012 to December 31, 2014, to identify cases of treatment-naïve mCNV, which was defined as the presence of myopic refractive error worse than -6...
March 31, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28367188/efficacy-of-intravitreal-bevacizumab-combined-with-pan-retinal-photocoagulation-versus-panretinal-photocoagulation-alone-in-treatment-of-proliferative-diabetic-retinopathy
#10
Murtaza Sameen, Muhammad Saim Khan, Ahsan Mukhtar, Muhammad Amer Yaqub, Mazhar Ishaq
OBJECTIVE: To compare effectiveness of pan-retinal photocoagulation alone versus panretinal photocoagulation combined with intravitreal bevacizumab on visual acuity and central macular thickness in patients presenting with proliferative diabetic retinopathy. METHODS: This Randomized controlled trial was carried out at Armed Forces Institute of ophthalmology, Pakistan from Jan 2016 to Aug 2016. Seventy six eyes of 50 patients having proliferative diabetic retinopathy and diabetic macular edema were included in the study...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28366369/intraindividual-comparison-between-femtosecond-laser-assisted-and-conventional-cataract-surgery
#11
Anna S Mursch-Edlmayr, Matthias Bolz, Nikolaus Luft, Michael Ring, Thomas Kreutzer, Christoph Ortner, Matthias Rohleder, Siegfried G Priglinger
PURPOSE: To compare the safety and efficacy between femtosecond laser-assisted cataract surgery using the Victus laser system and conventional cataract surgery. SETTING: Department of Ophthalmology, Kepler University Hospital, Linz, Austria. DESIGN: Prospective randomized case series. METHODS: Both eyes of patients with age-related cataract were randomized to conventional cataract surgery or femtosecond laser-assisted cataract surgery, both with intraocular lens (IOL) implantation...
February 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28356554/a-simple-technique-to-overcome-self-focusing-filamentation-supercontinuum-generation-aberrations-depth-dependence-and-waveguide-interface-roughness-using-fs-laser-processing
#12
Jerome Lapointe, Raman Kashyap
Several detrimental effects limit the use of ultrafast lasers in multi-photon processing and the direct manufacture of integrated photonics devices, not least, dispersion, aberrations, depth dependence, undesirable ablation at a surface, limited depth of writing, nonlinear optical effects such as supercontinuum generation and filamentation due to Kerr self-focusing. We show that all these effects can be significantly reduced if not eliminated using two coherent, ultrafast laser-beams through a single lens - which we call the Dual-Beam technique...
March 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28356143/reverse-pupillary-block-after-implantation-of-a-scleral-sutured-posterior-chamber-intraocular-lens-a-retrospective-open-study
#13
Seung Pil Bang, Choun-Ki Joo, Jong Hwa Jun
BACKGROUND: To report the clinical features of patients with reverse pupillary block (RPB) after scleral-sutured posterior chamber intraocular lens (PC IOL) implantation and biometric changes after laser peripheral iridotomy (LPI). METHODS: Eight patients attending our hospital's ophthalmology outpatient clinic, who developed RPB after implantation of a scleral-sutured PC IOL due to subluxation of the crystalline lens or IOL, were investigated in this retrospective, observational study...
March 29, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28345571/laser-capsulotomy-following-cataract-surgery-comparing-time-to-capsulotomy-with-implantation-of-two-broadly-used-intraocular-lenses
#14
Yael Sharon, Eitan Livny, Michael Mimouni, Dov Weinberger, Irit Bahar
PURPOSE: The aim of this study is to compare the length of time from uneventful cataract surgery using one of two common posterior chamber intraocular lenses (IOLs) (hydrophilic versus hydrophobic acrylic) to laser capsulotomy. MATERIALS AND METHODS: Retrospective analysis of all patients who underwent neodymium: yttrium-aluminum-garnet laser capsulotomy between 2011 and 2014 following uneventful phacoemulsification surgery at a tertiary university-affiliated medical center...
February 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28341474/anti-vascular-endothelial-growth-factor-therapy-for-primary-treatment-of-type-1-retinopathy-of-prematurity-a-report-by-the-american-academy-of-ophthalmology
#15
Deborah K VanderVeen, Michele Melia, Michael B Yang, Amy K Hutchinson, Lorri B Wilson, Scott R Lambert
PURPOSE: To review the available evidence on the ocular safety and efficacy of anti-vascular endothelial growth factor (VEGF) agents for the treatment of retinopathy of prematurity (ROP) compared with laser photocoagulation therapy. METHODS: A literature search of the PubMed and Cochrane Library databases was conducted last on September 6, 2016, with no date restrictions and limited to articles published in English. This search yielded 311 citations, of which 37 were deemed clinically relevant for full-text review...
May 2017: Ophthalmology
https://www.readbyqxmd.com/read/28317680/risk-for-microbial-keratitis-comparative-metaanalysis-of-contact-lens-wearers-and-post-laser-in-situ-keratomileusis-patients
#16
Jordan Masters, Mehmet Kocak, Aaron Waite
PURPOSE: To compare the risk for microbial keratitis in contact lens wearers stratified by wear schedule with the risk after laser in situ keratomileusis (LASIK). SETTING: Hamilton Eye Institute and Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, Tennessee, USA. DESIGN: Comparative metaanalysis and literature review. METHODS: An extensive literature search was performed in the PubMed database between December 2014 and July 2015...
January 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28297035/short-term-effects-of-early-switching-to-ranibizumab-or-aflibercept-in-diabetic-macular-edema-cases-with-non-response-to-bevacizumab
#17
Mohammed Ashraf, Ahmed A R Souka, Hassan ElKayal
BACKGROUND AND OBJECTIVES: To study the effect of early switching to ranibizumab (Lucentis; Genentech, South San Francisco, CA) or aflibercept (Eylea; Regeneron, Tarrytown, NY) in cases of diabetic macular edema (DME) that have shown no response to bevacizumab (Avastin; Genentech, South San Francisco, CA). PATIENTS AND METHODS: A retrospective study involving 59 eyes of 45 patients with DME previously treated with bevacizumab. Patients were switched either to ranibizumab or aflibercept...
March 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28257508/longitudinal-changes-of-ocular-blood-flow-using-laser-speckle-flowgraphy-during-normal-pregnancy
#18
Takahiro Sato, Junichi Sugawara, Naoko Aizawa, Noriyuki Iwama, Fumiaki Takahashi, Michiyo Nakamura-Kurakata, Masatoshi Saito, Takashi Sugiyama, Hiroshi Kunikata, Toru Nakazawa, Nobuo Yaegashi
PURPOSE: Innovative laser speckle flowgraphy (LSFG) enables noninvasive evaluation of retinal microcirculation and the usefulness has been reported in the field of ophthalmology. LSFG has allowed us to measure the real time changes of retinal blood flow without pupillary dilatations and contrast media. Herein, we investigated the change of retinal blood flow in normal pregnant women during gestation using LSFG. METHODS: A prospective cohort study was conducted in 53 pregnant women who visited our institution between January, 2013 and July, 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28243058/effects-of-3-trehalose-as-an-adjuvant-treatment-after-lasik
#19
Antonio J Mateo Orobia, Paula Casas Pascual, José Á Cristóbal Bescós, Diana Perez García, Carlos Peiro Embid, M Ángeles Del Buey Sayas, Valentyna Korobko Kulikova, Noelia Lafuente Ojeda
PURPOSE: To evaluate the effect of 3% trehalose as an adjuvant in the standard treatment after laser-assisted in situ keratomileusis. DESIGN: Interventional prospective comparative single-blind study. SETTING: Department of Ophthalmology, Hospital Quirón Zaragoza, Spain. METHODS: A total of 26 eyes (13 patients) were included, of which 12 eyes (group 1) received conventional treatment with lubricant drops of hyaluronic acid (0...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28208899/study-of-variation-in-intraocular-pressure-spike-iop-following-nd-yag-laser-capsulotomy
#20
Niharika K Shetty, Sriya Sridhar
INTRODUCTION: Posterior Capsular Opacifications (PCO) is a frequent complication of cataract surgery following posterior chamber intraocular lens implantation. Nd -Yag laser capsulotomy is the treatment of choice for PCO and is known to be associated with complications like Raised Intraocular Pressure (IOP), Intraocular lens pitting, intraocular lens cracks, cystoid macular oedema, retinal detachment, corneal burns. Raised IOP is the most common complication and prescribing anti-glaucoma drugs post capsulotomy is a common practise...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
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