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https://www.readbyqxmd.com/read/28648437/utility-of-adjunctive-modalities-in-coronary-chronic-total-occlusion-intervention
#1
REVIEW
Hemal Bhatt, Sean Janzer, Jon C George
Coronary chronic total occlusion (CTO) intervention remains one of the most challenging domains in interventional cardiology. Due to the technical challenges involved and potential procedural complications, CTO percutaneous coronary intervention (PCI) attempt and success rates remain less than standard PCI. However, the use of several adjunctive tools such as intravascular ultrasound, optical coherence tomography, rotational atherectomy, orbital atherectomy, excimer laser coronary atherectomy and percutaneous left ventricular assist device may contribute to improved CTO PCI success rates or provide better hemodynamic assessment of CTO lesion (i...
May 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28647783/a-sample-predictive-model-for-intraocular-pressure-following-laser-in-situ-keratomileusis-for-myopia-and-an-intraocular-pressure-constant
#2
Ayse Ebru Bahadir Kilavuzoglu, Tahir Kansu Bozkurt, Cemile Banu Cosar, Asım Bozkurt Sener
PURPOSE: To describe a sample predictive model for intraocular pressure (IOP) following laser in situ keratomileusis (LASIK) for myopia and an IOP constant. METHODS: The records of patients that underwent LASIK for myopia and myopic astigmatism via WaveLight Allegretto Wave Eye-Q 400 Hz excimer laser and Hansatome XP microkeratome were retrospectively reviewed. Patients with no systemic or ocular disease other than myopia or myopic astigmatism were included in the study...
June 24, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28645265/a-pilot-study-lasek-with-the-triple-a-profile-of-a-mel-90-for-mild-and-moderate-myopia
#3
Yingjun Chen, Dong Yang, Tian Han, Haipeng Xu, Meiyan Li, Xingtao Zhou
BACKGROUND: To investigate the visual and refractive outcomes in patients with mild to moderate myopia after laser-assisted subepithelial keratectomy (LASEK) using the 500 Hz pulse rate of the Triple-A profile. METHODS: Thirty-six eyes of 20 patients (mean age, 27.5 ± 4.6 years) were included in this prospective, consecutive study. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), corneal topography, and corneal aberrations were measured preoperatively and 1 day, 1 week, 1, 3 and 6 months post-operation...
June 23, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28616398/new-photodynamic-therapy-with-next-generation-photosensitizers
#4
REVIEW
Hiromi Kataoka, Hirotada Nishie, Noriyuki Hayashi, Mamoru Tanaka, Akihiro Nomoto, Shigenobu Yano, Takashi Joh
Photodynamic therapy (PDT) is a non-invasive antitumor treatment that uses the combination of a photosensitizer, tissue oxygen, and visible light irradiation to produce cytotoxic reactive oxygen species, predominantly singlet oxygen. Currently, first-generation PDT using porfimer sodium with an excimer dye laser, and second-generation PDT using talaporfin sodium PDT with a semiconductor laser are approved by health insurance for use in Japan. However, the cancer cell specificity and selectivity of these treatments are inadequate...
April 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28612330/endothelial-cell-changes-after-photorefractive-keratectomy-with-graded-usage-of-mitomycin-c
#5
Hamid Gharaee, Siamak Zarei-Ghanavati, Reza Alizadeh, Mojtaba Abrishami
PURPOSE: To compare differences in the endothelial cells before and after photorefractive keratectomy (PRK) for myopia with refractive error graded mitomycin C (MMC) application. METHODS: In a prospective randomized clinical trial, forty-eight myopic patients referred to Khatam-al-Anbia Eye Hospital, Mashhad, Iran, for PRK. Patients were treated with PRK by a Bausch and Lomb Technolas 217z excimer laser (Bausch and Lomb, Rochester, NY). MMC was applied after PRK 5 s for each diopter of spherical equivalent myopic refractive error corrected...
June 13, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28591507/-regarding-surface-ablation-as-an-ethically-superior-option-when-compared-to-lasik-primum-non-nocere
#6
Kepa Balparda
Refractive surgery is an extremely safe surgical intervention, with excellent profiles of clinical improvement and satisfaction. The ethical responsibility of the refractive surgeon is to look for diminishing the patients' exposure to unnecessary risks. Therefore, surface ablation would be a preferable option over LASIK as the former has a better safety profile than the latter, without compromising final visual acuity. Ethically, surface ablation should be considered as the first choice in those patients undergoing Excimer laser refractive surgery...
July 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28589448/-laser-in-situ-keratomileusis-with-microkeratome-or-femtosecond-laser
#7
REVIEW
T Kohnen, G Steinwender
OBJECTIVE AND PRINCIPLES: In LASIK, after cutting a lamellating stromal corneal incision (flap) with a microkeratome or a femtosecond laser, the underlying tissue is treated with an excimer laser for refractive correction. The objective is to achieve independency from spectacles and contact lenses due to correction of ametropia. INDICATIONS: Surgery is indicated when the patient wishes to achieve independency from spectacles and contact lenses. For LASIK, the German Commission for Refractive Surgery defined a range of applicability for myopic correction up to -8 diopters (D), astigmatic correction up to 5 D and hyperopic correction up to +3 D...
June 6, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28587100/excimer-laser-surgery-biometrical-iris-eye-recognition-with-cyclorotational-control-eye-tracker-system
#8
Bojan Pajic, Zeljka Cvejic, Zoran Mijatovic, Dragan Indjin, Joerg Mueller
A prospective comparative study assessing the importance of the intra-operative dynamic rotational tracking-especially in the treatment of astigmatisms in corneal refractive Excimer laser correction-concerning clinical outcomes is presented. The cyclotorsion from upright to supine position was measured using iris image comparison. The Group 1 of patients was additionally treated with cyclorotational control and Group 2 only with X-Y control. Significant differences were observed between the groups regarding the mean postoperative cylinder refraction (p < 0...
May 25, 2017: Sensors
https://www.readbyqxmd.com/read/28586496/small-incision-lenticule-extraction-smile-for-hyperopia-optical-zone-diameter-and-spherical-aberration-induction
#9
Dan Z Reinstein, Kishore R Pradhan, Glenn I Carp, Timothy J Archer, Marine Gobbe, Walter Sekundo, Raynan Khan, Purushottam Dhungana
PURPOSE: To evaluate optical zone diameter efficacy and spherical aberration change in hyperopic small incision lenticule extraction (SMILE). METHODS: Prospective study of 60 consecutive hyperopic SMILE procedures using the VisuMax femtosecond laser (Carl Zeiss Meditec, Jena, Germany) and matched LASIK procedures with the VisuMax and MEL 80 excimer (Carl Zeiss Meditec) lasers. Inclusion criteria were maximum attempted hyperopic meridian of between +1.00 and +7.00 diopters (D)...
June 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28579751/treatment-of-moderate-to-high-hyperopia-with-the-wavelight-allegretto-400-and-ex500-excimer-laser-systems
#10
Manoj Motwani, Ronald Pei
PURPOSE: To evaluate the efficacy of treating patients with +3.00 diopters (D) to +6.00 D of hyperopia via laser-assisted in situ keratomileusis (LASIK) with the WaveLight Allegretto 400 and EX500 excimer laser systems. SETTING: Private clinical ophthalmology practice. PATIENTS AND METHODS: This was a retrospective study of patients undergoing LASIK treatments of +3.00 to +6.00 D on two different WaveLight laser systems: 163 eyes on the 400 (Hertz) Hz system and 54 eyes on the 500 Hz system...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28570235/five-year-freedom-from-target-lesion-revascularization-using-excimer-laser-ablation-therapy-in-the-treatment-of-in-stent-restenosis-of-femoropopliteal-arteries
#11
Nicolas W Shammas, Gail A Shammas, Lorraine Arikat, Andrew N Shammas, Alec Darrow, Avantika Banerjee, Benjamin Rudy
BACKGROUND: Target-lesion revascularization (TLR) and loss of patency remain high following treatment of in-stent restenosis (ISR) of the femoropopliteal (FP) artery. Excimer laser atherectomy (ELA) is effective in reducing TLR and improves patency at 6-month and 1-year follow-up when compared with balloon angioplasty (PTA). The long-term sustainability of these early results is unknown. We present a retrospective analysis from our center on the 5-year outcomes of ELA in the treatment of ISR of the FP arteries...
June 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28567176/combinatorial-screening-of-halide-perovskite-thin-films-and-solar-cells-by-mask-defined-ir-laser-molecular-beam-epitaxy
#12
Kazuhiro Kawashima, Yuji Okamoto, Orazmuhammet Annayev, Nobuo Toyokura, Ryota Takahashi, Mikk Lippmaa, Kenji Itaka, Yoshikazu Suzuki, Nobuyuki Matsuki, Hideomi Koinuma
As an extension of combinatorial molecular layer epitaxy via ablation of perovskite oxides by a pulsed excimer laser, we have developed a laser molecular beam epitaxy (MBE) system for parallel integration of nano-scaled thin films of organic-inorganic hybrid materials. A pulsed infrared (IR) semiconductor laser was adopted for thermal evaporation of organic halide (A-site: CH3NH3I) and inorganic halide (B-site: PbI2) powder targets to deposit repeated A/B bilayer films where the thickness of each layer was controlled on molecular layer scale by programming the evaporation IR laser pulse number, length, or power...
2017: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/28553070/the-use-of-wavelight-%C3%A2-contoura-to-create-a-uniform-cornea-the-lyra-protocol-part-2-the-consequences-of-treating-astigmatism-on-an-incorrect-axis-via-excimer-laser
#13
Manoj Motwani
PURPOSE: To show how an incorrect manifest astigmatism axis can cause an abnormal induced astigmatism on a new axis. PATIENTS AND METHODS: Four eyes of three patients were treated primarily with WaveLight(®) EX500 wavefront optimized (WFO) treatments for astigmatism. All four eyes needed enhancements and were analyzed retrospectively via WaveLight(®) Contoura to determine the reason for the incorrect astigmatism treatment. Two of the eyes were retreated with topographic-guided ablation, and two were treated with WFO correction...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28541350/ultrasensitive-and-reproducible-sers-platform-of-coupled-ag-grating-with-multibranched-au-nanoparticles
#14
Yevgeniya Kalachyova, David Mares, Vitezslav Jerabek, Pavel Ulbrich, Ladislav Lapcak, Vaclav Svorcik, Oleksiy Lyutakov
Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles - so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals...
June 7, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28534679/laser-induced-photofragmentation-fluorescence-imaging-of-alkali-compounds-in-flames
#15
Tomas Leffler, Christian Brackmann, Marcus Aldén, Zhongshan Li
Laser-induced photofragmentation fluorescence has been investigated for the imaging of alkali compounds in premixed laminar methane-air flames. An ArF excimer laser, providing pulses of wavelength 193 nm, was used to photodissociate KCl, KOH, and NaCl molecules in the post-flame region and fluorescence from the excited atomic alkali fragment was detected. Fluorescence emission spectra showed distinct lines of the alkali atoms allowing for efficient background filtering. Temperature data from Rayleigh scattering measurements together with simulations of potassium chemistry presented in literature allowed for conclusions on the relative contributions of potassium species KOH and KCl to the detected signal...
June 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28532939/guiding-flying-spot-laser-transepithelial-phototherapeutic-keratectomy-with-optical-coherence-tomography
#16
REVIEW
Yan Li, Hideaki Yokogawa, Maolong Tang, Winston Chamberlain, Xinbo Zhang, David Huang
PURPOSE: To analyze transepithelial phototherapeutic keratectomy (PTK) results using optical coherence tomography (OCT) and develop a model to guide the laser dioptric and depth settings. SETTING: Casey Eye Institute, Portland, Oregon, USA. DESIGN: Prospective nonrandomized case series. METHODS: Patients with superficial corneal opacities and irregularities had transepithelial PTK with a flying-spot excimer laser by combining wide-zone myopic and hyperopic astigmatic ablations...
April 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28532116/antibacterial-mechanical-and-surface-properties-of-ag-dlc-films-prepared-by-dual-pld-for-medical-applications
#17
P Písařík, M Jelínek, J Remsa, J Mikšovský, J Zemek, K Jurek, Š Kubinová, J Lukeš, J Šepitka
Silver doped diamond-like carbon layers were deposited by dual pulsed laser deposition using two KrF excimer lasers. The concentration of Ag, determined by XPS and WDS, moved from zero to ~10at%. We found that the sp(2)/sp(3) ratio, film roughness and the number of droplets (SEM and AFM) increased with increasing silver concentration. The sp(3) content measurement (XPS) was influenced by ion cluster surface sputtering and varied from 71.0% (undoped DLC) to 36.2% (for 9.3at% Ag). Transmission was measured on the scale from 200nm to 1100nm, and decreased with increasing silver content...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28486842/impact-of-angioscopic-evaluation-for-femoropopliteal-in-stent-restenosis-before-and-after-excimer-laser-atherectomy
#18
Akiko Idemoto, Naotaka Okamoto, Akihiro Tanaka, Naoki Mori, Daisuke Nakamura, Masamichi Yano, Nobuhiko Makino, Yasuyuki Egami, Ryu Shutta, Jun Tanouchi, Masami Nishino
In-stent restenosis (ISR) is a prevalent problem following stenting of femoropopliteal lesions. A potential novel treatment modality for ISR including excimer laser atherectomy (ELA) has become available. We performed ELA for in-stent chronic total occlusion (CTO) of femoropopliteal lesions and evaluated lesion morphology before and after ELA by angioscopy in 2 patients. The angioscopic findings clearly showed removal of in-stent thrombi after ELA. Thus, ELA may be effective for in-stent CTO of femoropopliteal lesions...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28486725/regeneration-of-defective-epithelial-basement-membrane-and-restoration-of-corneal-transparency-after-photorefractive-keratectomy
#19
Gustavo K Marino, Marcony R Santhiago, Abirami Santhanam, Andre A M Torricelli, Steven E Wilson
PURPOSE: To study regeneration of the normal ultrastructure of the epithelial basement membrane (EBM) in rabbit corneas that had -9.00 D photorefractive keratectomy (PRK) and developed late haze (fibrosis) with restoration of transparency over 1 to 4 months after surgery and in corneas that had incisional wounds. METHODS: Twenty-four rabbits had one of their eyes included in one of the two procedure groups (-9.00 D PRK or nearly full-thickness incisional wounds), whereas the opposite eyes served as the unwounded control group...
May 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28486722/lasik-for-the-correction-of-high-hyperopic-astigmatism-with-epithelial-thickness-monitoring
#20
Dan Z Reinstein, Glenn I Carp, Timothy J Archer, Tim Buick, Marine Gobbe, Elizabeth L Rowe, Mario Jukic, Emma Brandon, Johnny Moore, Tara Moore
PURPOSE: To evaluate outcomes of high hyperopic LASIK using the MEL 80 excimer laser (Carl Zeiss Meditec, Jena, Germany). METHODS: Retrospective analysis of 830 consecutive high hyperopic LASIK procedures using the MEL 80 excimer laser and either the VisuMax femtosecond laser (Carl Zeiss Meditec) or zero compression Hansatome microkeratome (Bausch & Lomb, Rochester, NY). Inclusion criteria were attempted hyperopic correction of +4.00 diopters [D] or higher in one axis and corrected distance visual acuity (CDVA) of 20/20 or better...
May 1, 2017: Journal of Refractive Surgery
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