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https://www.readbyqxmd.com/read/28910825/comparison-of-continuous-wave-and-micropulse-modulation-in-retinal-laser-therapy
#1
COMPARATIVE STUDY
Jenny Wang, Yi Quan, Roopa Dalal, Daniel Palanker
Purpose: Recent progress in retinal laser therapy has centered upon using thermal stress below damage threshold or selective destruction of targeted tissue layers as a stimulus for retinal repair. Temporal modulation, including micropulse, is thought to increase the selectivity of laser treatment, but has not been carefully analyzed. We measure and model the tissue response to continuous-wave (CW) and micropulse laser to evaluate the advantages and drawbacks of temporal modulation. Methods: Thresholds of ophthalmoscopic visibility, which indicates damage to photoreceptors, and fluorescein angiography (FA), indicating damage to retinal pigment epithelium (RPE), were measured with 577-nm laser in rabbits for duty cycles ranging from 3% to 100% (CW) and pulse envelopes of 20 and 200 ms...
September 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28875406/subretinal-fibrin-absorption-after-577-nm-subthreshold-micropulse-laser-therapy-in-a-csc-case-a-brief-report
#2
Lijun Zhou, Tao Li, Kunbei Lai, Chuangxin Huang, Fabao Xu, Zhe Zhu, Lin Lu, Chenjin Jin
No abstract text is available yet for this article.
September 5, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28860045/the-effect-of-pulsing-on-transverse-ultrasound-efficiency-and-chatter
#3
Alex J Wright, Austin D Bohner, Ashlie A Bernhisel, Brian Zaugg, William R Barlow, Jeff H Pettey, Randall J Olson
PURPOSE: To evaluate the effects of micropulse, long pulse and continuous ultrasound on transverse ultrasound using Abbott Medical Optics' (AMO) WhiteStar Signature Pro with the Ellips FX handpiece. DESIGN: In vitro laboratory study METHODS: This study was conducted at the John A. Moran Eye Center Laboratory, University of Utah, Salt Lake City, UT, USA. Porcine lenses were hardened in formalin for 2 hours and equilibrated in BSS over a 24-hour period. The lenses were then cubed in 2...
August 28, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28839510/combined-intravitreal-dexamethasone-implant-and-micropulse-yellow-laser-for-treatment-of-anti-vegf-resistant-diabetic-macular-edema
#4
Ahmed Hosni Abd Elhamid
PURPOSE: To report the efficacy and safety of combined intravitreal dexamethasone implant and micropulse laser for anti-VEGF resistant diabetic macular edema. PATIENTS AND METHODS: Prospective, non-controlled study that was conducted for twenty eyes with center-involved diabetic macular edema not responding to anti-VEGF therapy. Ozurdex intravitreal implant was injected to all eyes with subsequent micropulse yellow laser one month after the injection. All eyes were followed up after one, three, four, six, nine and twelve months...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28831603/functional-and-morphological-outcome-in-patients-with-chronic-central-serous-chorioretinopathy-treated-by-subthreshold-micropulse-laser
#5
Maciej Gawęcki, Agnieszka Jaszczuk-Maciejewska, Anna Jurska-Jaśko, Andrzej Grzybowski
BACKGROUND: Chronic central serous chorioretinopathy is a serious therapeutic problem as it may lead to significant visual impairment. The aim of this retrospective study is to evaluate functional and morphological effects, as well as factors influencing visual outcome in patients treated by subthreshold micropulse laser. METHODS: Fifty-one eyes with chronic central serous chorioretinopathy lasting longer than 4 months (18 months on average) underwent up to two sessions of subtreshold micropulse laser treatment...
August 22, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28800574/outcome-of-micropulse-laser-transscleral-cyclophotocoagulation-on-pediatric-versus-adult-glaucoma-patients
#6
Jun Hui Lee, Yuhua Shi, Behzad Amoozgar, Christopher Aderman, Alejandra De Alba Campomanes, Shan Lin, Ying Han
PURPOSE: To study and compare the outcome of micropulse transscelral cyclophotocoagulation in pediatric glaucoma patients to that in adult glaucoma patients. METHODS: Consecutive pediatric and adult patients who received micropulse transscelral cyclophotocoagulation between July 2015 and December 2016 at University of California, San Francisco were retrospectively analyzed. All cases had at least 12-month follow-up. RESULTS: Nine eyes from 9 pediatric patients and 27 eyes from 25 adult patients were included...
August 10, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28731494/subthreshold-micropulse-laser-reduces-anti-vegf-injection-burden-in-patients-with-diabetic-macular-edema
#7
Elad Moisseiev, Sam Abbassi, Sumeer Thinda, Joseph Yoon, Glenn Yiu, Lawrence S Morse
PURPOSE: To evaluate the efficacy of micropulse laser in the early treatment of diabetic macular edema (DME) and its associated burden of anti-vascular endothelial growth factor (VEGF) injections. METHODS: This retrospective comparative study compared a group of 19 eyes with DME treated with micropulse laser to a matched control group of 19 eyes with DME treated with ranibizumab injections without micropulse laser. Recorded parameters included previous medical and ocular history, previous and subsequent ranibizumab injections administered for DME, visual acuity (VA), central macular thickness throughout the follow-up period, and the occurrence of any complications...
July 20, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28671927/micropulse-cyclophotocoagulation-initial-results-in-refractory-glaucoma
#8
Matthew E Emanuel, Davinder S Grover, Ronald L Fellman, David G Godfrey, Oluwatosin Smith, Michelle R Butler, Helen L Kornmann, William J Feuer, Swati Goyal
PURPOSE: The purpose of this study is to evaluate the use of micropulse transscleral cyclophotocoagulation (MP-TSCPC), a new and increasingly popular treatment, in patients with uncontrolled glaucoma. METHODS: A retrospective chart review was performed for all patients who underwent a MP-TSCPC at the Glaucoma Associates of Texas. RESULTS: A total of 84 eyes were treated with MP-TSCPC in this study with a mean follow-up time of 4.3 months. The mean age of treated patients was 74 years and 48 (57%) were female...
August 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28643855/support-surfaces-in-the-prevention-of-pressure-ulcers-in-surgical-patients-an-integrative-review
#9
Karoline Faria de Oliveira, Kleiton Gonçalves Nascimento, Adriana Cristina Nicolussi, Suzel Regina Ribeiro Chavaglia, Cleudmar Amaral de Araújo, Maria Helena Barbosa
AIM: To assess the scientific evidence about the types of support surfaces used in intraoperative surgical practice in the prevention of pressure ulcers due to surgical positioning. METHOD: This is an integrative literature review. The electronic databases Cochrane, PubMed, Web of Science, Scopus, Lilacs, and CINAHL were used. The descriptors surgical patients, support surfaces, perioperative care, patient positioning, and pressure ulcer were used in the search strategy...
August 2017: International Journal of Nursing Practice
https://www.readbyqxmd.com/read/28599334/-cyclodestructive-procedures-to-lower-intraocular-pressure-a-review
#10
Drazen Jurjevic, Jens Funk, Marc Töteberg-Harms
The only therapy for glaucoma, for which there is sufficient evidence, is the lowering of intraocular pressure. Intraocular pressure reduction can be achieved by an improvement in outflow or a reduction of aqueous humor production. Surgically, a reduction of aqueous humor production can be achieved by cyclodestructive procedures. This article provides a brief summary of the different cyclodestructive procedures. The efficacy of cyclophotocoagulation is well documented. The risk profile has been reduced by changes in the laser protocols...
June 9, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28540655/a-review-of-subthreshold-micropulse-laser-for-treatment-of-macular-disorders
#11
REVIEW
Paula Scholz, Lebriz Altay, Sascha Fauser
Micropulse laser treatment is an alternative to the conventional continuous-wave laser for the treatment of retinal or macular diseases. In contrast to the conventional laser, the therapeutic effect of the subthreshold micropulse laser is not accompanied by thermal retinal damage. This fact is of particular importance when a treatment near the fovea is required. Micropulse treatment is applied in indications such as central serous chorioretinopathy (CSC), diabetic macular edema (DME), or macular edema due to retinal vein occlusion (RVO)...
July 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28442697/when-should-we-give-up-filtration-surgery-indications-techniques-and-results-of-cyclodestruction
#12
REVIEW
Marisse Masis Solano, Guofu Huang, Shan C Lin
PURPOSE: Cyclodestructive procedures are traditionally used in cases of glaucoma that are refractory to medical and surgical therapy. The goal of this chapter is to describe the indications, contraindications, techniques, and pitfalls of cyclodestructive procedures, including transscleral cyclophotocoagulation (TCP), micropulse TCP (MP-TCP), endoscopic cyclophotocoagulation (ECP), and ultrasound cilioplasty. METHODS: A literature search for cyclodestructive techniques was performed, and relevant studies were included for evaluation and review...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28413404/yellow-pattern-577-nm-micropulse-laser-treatment-of-macular-edema-from-radiation-retinopathy-a-case-report
#13
James G Wong, Trang T H Nguyen
We report a case of a 60-year-old Asian male who developed radiation retinopathy 23 years after initial radiotherapy for nasopharyngeal carcinoma and was successfully treated with yellow pattern 577-nm micropulse laser. Secondary macular edema and visual acuity improved following a single treatment session with minimal scarring. Yellow pattern micropulse laser is a safe and effective treatment for macular edema secondary to radiation retinopathy.
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28378980/subthreshold-micropulse-yellow-577-nm-laser-therapy-of-diabetic-macular-oedema-in-rural-and-urban-patients-of-south-eastern-poland
#14
Małgorzata Latalska, Agata Prokopiuk, Dominika Wróbel-Dudzińska, Jerzy Mackiewicz
Objectiv. To evaluate the efficacy of subthreshold micropulse yellow (577 nm) laser photocoagulation in diffuse macular edema (DME) in rural and urban patients of south-eastern Poland. MATERIALS AND METHOD: Seventy-five eyes of 75 patients with diffuse DME were treated with subthreshold micropulse yellow laser photocoagulation with a 5% duty cycle at an energy level. The laser exposure time was 20 ms and the spot diameter was 100 μm. Best corrected visual acuity (BCVA), reading vision (Snellen) and optical coherence tomography-determined central retinal thickness (CRT) were estimated before and 2, 4 and 6 months after laser treatment...
March 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28185205/a-review-of-subthreshold-micropulse-laser-and-recent-advances-in-retinal-laser-technology
#15
REVIEW
Daniel Su, Jean-Pierre Hubschman
The role of retinal photocoagulation as a first line therapy for various retinal pathologies has decreased with the introduction of anti-vascular endothelial growth factor therapy. However, retinal laser therapy remains an important treatment modality, especially with the emergence of micropulse subthreshold treatment and the integration of newer technology such as augmented reality and semi-automated delivery. This review summarizes current evidence for micropulse laser as a treatment modality and discusses the role of new technology such as augmented reality in the future of laser therapy...
June 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28126388/impact-of-coal-carrying-trains-on-particulate-matter-concentrations-in-south-delta-british-columbia-canada
#16
K Akaoka, I McKendry, J Saxton, P W Cottle
Transport of coal by train through residential neighborhoods in Metro Vancouver, British Columbia, Canada may increase the possibility of exposure to particulate matter at different size ranges, with concomitant potential negative health impacts. This pilot study identifies and quantifies train impacts on particulate matter (PM) concentrations at a single location. Field work was conducted during August and September 2014, with the attributes of a subset of passing trains confirmed visually, and the majority of passages identified with audio data...
April 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27898468/update-on-ciliary-body-laser-procedures
#17
REVIEW
Behzad Amoozgar, Eileen N Phan, Shan C Lin, Ying Han
PURPOSE OF REVIEW: There are currently various options available for glaucoma treatment procedures ranging from laser to penetrating to nonpenetrating surgeries. Innovations in glaucoma surgical therapeutics include features such as external application, focused tissue effects, and minimal manipulation as these factors all help lower the risk of side-effects in addition to increasing the success rate of the treatment. Traditional diode laser transscleral cyclophotocoagulation (TSCPC) is invasive and destructive...
March 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/27867786/aerosol-lidar-observations-of-atmospheric-mixing-in-los-angeles-climatology-and-implications-for-greenhouse-gas-observations
#18
John Ware, Eric A Kort, Phil DeCola, Riley Duren
Atmospheric observations of greenhouse gases provide essential information on sources and sinks of these key atmospheric constituents. To quantify fluxes from atmospheric observations, representation of transport-especially vertical mixing-is a necessity and often a source of error. We report on remotely sensed profiles of vertical aerosol distribution taken over a 2 year period in Pasadena, California. Using an automated analysis system, we estimate daytime mixing layer depth, achieving high confidence in the afternoon maximum on 51% of days with profiles from a Sigma Space Mini Micropulse LiDAR (MiniMPL) and on 36% of days with a Vaisala CL51 ceilometer...
August 27, 2016: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/27830205/comparison-of-subthreshold-diode-laser-micropulse-therapy-versus-conventional-photocoagulation-laser-therapy-as-primary-treatment-of-diabetic-macular-edema
#19
Farhad Fazel, Majid Bagheri, Khodayar Golabchi, Hamidreza Jahanbani Ardakani
PURPOSE: The aim of the present study was to investigate the effect of subthreshold diode laser micropulse (SDM) in comparison with conventional laser photocoagulation in the treatment of the diabetic macular edema (DME). METHODS: Sixty-eight eyes from 68 patients with clinically significant DME were divided randomly into two equal groups. In the first group, SDM photocoagulation was employed, while conventional laser photocoagulation was performed on the eyes of the second group...
December 2016: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/27813528/response-to-comment-on-comparison-of-subthreshold-micropulse-laser-577%C3%A2-nm-treatment-and-half-dose-photodynamic-therapy-in-patients-with-chronic-central-serous-chorioretinopathy
#20
COMMENT
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