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https://www.readbyqxmd.com/read/29120718/wound-healing-in-rabbit-corneas-after-flapless-refractive-lenticule-extraction-with-a-345%C3%A2-nm-ultraviolet-femtosecond-laser
#1
Christian M Hammer, Corinna Petsch, Jörg Klenke, Katrin Skerl, Christian Wüllner, Christof Donitzky, Friedrich Paulsen, Michael Scholz, Theo Seiler, Friedrich E Kruse, Johannes Menzel-Severing
PURPOSE: To characterize corneal wound healing in a rabbit model after flapless refractive lenticule extraction with a 345 nm ultraviolet femtosecond laser. SETTING: Departments of Ophthalmology and Anatomy II, University of Erlangen-Nürnberg and Wavelight GmbH, Erlangen, Germany. DESIGN: Experimental study. METHODS: Flapless refractive lenticule extraction was performed in 1 eye each of 20 New Zealand white rabbits (-5...
October 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29119072/a-comparison-of-visual-outcomes-and-patient-satisfaction-between-photorefractive-keratectomy-and-femtosecond-laser-assisted-in-situ-keratomileusis
#2
Nauman Hashmani, Sharif Hashmani, Priyanka Ramesh, Hina Rajani, Junaid Ahmed, Jaish Kumar, Arun Kumar, Munira Jamali
Purpose To compare visual outcomes and satisfaction among patients of photorefractive keratectomy (PRK; Wavelight EX 500, Alcon, Ft Worth, TX, USA) and femtosecond laser-assisted in situ keratomileusis (FAL; Wavelight FS 200 laser and Wavelight EX 500, Alcon, Ft Worth, TX, USA). Methods We performed a retrospective study of 409 eyes in 207 patients that underwent either PRK (n=90) or FAL (n=117) at the two centers of Hashmanis Hospital, Karachi, Pakistan. The included refractive outcomes were sphere diopters (D), cylinder D, and spherical equivalent D...
September 1, 2017: Curēus
https://www.readbyqxmd.com/read/29062777/comparison-of-visual-performance-recovery-after-thin-flap-lasik-with-4-femtosecond-lasers
#3
Jing Zhang, Yue-Hua Zhou, Yan Zheng, Qian Liu
AIM: To compare the speed of visual recovery following myopic thin-flap LASIK with four femtosecond lasers. METHODS: Eighty-eight eyes of 46 patients who were consecutively scheduled for bilateral LASIK with the IntraLase FS60 (Group 1), Femto LDV Crystal Line (Group 2), Wavelight FS200 (Group 3) and VisuMax (Group 4) femtosecond lasers were enrolled in. Monocular uncorrected distance visual acuity (UDVA), best-corrected distant visual acuity (CDVA), refraction, contrast sensitivity and higher-order aberrations (HOAs) were evaluated at 1, 3d, 1wk and 1mo postoperatively...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28860701/accuracy-of-alcon-wavelight-%C3%A2-ex500-optical-pachymetry-during-lasik
#4
Mark D Mifflin, Xavier M Mortensen, Brent S Betts, Cole Gross, Brian Zaugg
PURPOSE: To study the accuracy and reliability of optical pachymetry using the Alcon WaveLight EX500 during laser-assisted in situ keratomileusis (LASIK). MATERIALS AND METHODS: This was a retrospective chart review of 90 eyes from 45 patients who had undergone LASIK (mean age 35.2±8.2 years; 19 males, 26 females). The WaveLight FS200 femtosecond laser was programmed to cut LASIK flaps at a desired depth of 120 μm. Optical low-coherence reflectometry (WaveLight EX500) was used to measure central corneal thickness prior to lifting the flap, and the residual stromal bed immediately after excimer ablation...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28741162/-scanning-electron-microscopic-investigations-of-cutting-edge-quality-in-lamellar-keratotomy-using-the-wavelight-femtosecond-laser-fs-200-what-influence-do-spot-distance-and-an-additional-tunnel-have
#5
T Hammer, T Höche, J Heichel
BACKGROUND: Femtosecond lasers (fs-lasers) are established cutting instruments for the creation of LASIK flaps. Previous studies often showed even rougher surfaces after application of fs-laser systems compared to lamellar keratotomy with mechanical microkeratomes. When cutting the cornea with fs-lasers, an intrastromal gas development occurs, which has a potentially negative influence on the cutting quality if the gas cannot be dissipated; therefore, manufacturers have chosen the way of gas assimilation in so-called pockets...
July 24, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
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
#6
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/28579751/treatment-of-moderate-to-high-hyperopia-with-the-wavelight-allegretto-400-and-ex500-excimer-laser-systems
#7
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/28553071/the-use-of-wavelight-%C3%A2-contoura-to-create-a-uniform-cornea-the-lyra-protocol-part-3-the-results-of-50-treated-eyes
#8
Manoj Motwani
PURPOSE: To demonstrate how using the Wavelight Contoura measured astigmatism and axis eliminates corneal astigmatism and creates uniformly shaped corneas. PATIENTS AND METHODS: A retrospective analysis was conducted of the first 50 eyes to have bilateral full WaveLight(®) Contoura LASIK correction of measured astigmatism and axis (vs conventional manifest refraction), using the Layer Yolked Reduction of Astigmatism Protocol in all cases. All patients had astigmatism corrected, and had at least 1 week of follow-up...
2017: Clinical Ophthalmology
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
#9
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/28553069/the-use-of-wavelight-%C3%A2-contoura-to-create-a-uniform-cornea-the-lyra-protocol-part-1-the-effect-of-higher-order-corneal-aberrations-on-refractive-astigmatism
#10
Manoj Motwani
PURPOSE: To demonstrate how higher-order corneal aberrations can cancel out, modify, or induce lower-order corneal astigmatism. PATIENTS AND METHODS: Six representative eyes are presented that show different scenarios in which higher-order aberrations interacting with corneal astigmatism can affect the manifest refraction. WaveLight(®) Contoura ablation maps showing the higher-order aberrations are shown, as are results of correction with full measured correction using the LYRA (Layer Yolked Reduction of Astigmatism) Protocol...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28486723/prospective-evaluation-of-outcomes-in-patients-undergoing-treatment-for-myopia-using-the-wavelight-refractive-suite
#11
Arthur Cummings, Daniel Durrie, Michael Gordon, Ravaughn Williams, James A Gow, Matthias Maus
PURPOSE: To evaluate outcomes in patients with myopia up to -12.00 diopters (D), with or without astigmatism up to 6.00 D, who underwent LASIK with the WaveLight Refractive Suite (Alcon Laboratories, Inc., Fort Worth, TX). METHODS: This multicenter, prospective, single-arm study evaluated patients at baseline, on the day of surgery, and 1 day and 1, 3, and 6 months postoperatively. The primary outcome was comparison of 1-month postoperative binocular uncorrected distance visual acuity (UDVA) with preoperative binocular corrected distance visual acuity (CDVA)...
May 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28461870/assessment-of-refractive-outcome-of-femtosecond-assisted-lasik-for-hyperopia-correction
#12
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/28461737/comparison-of-the-biometric-measurements-calculated-with-zeiss-iol-master-and-wavelight-ob-820
#13
Georgios Labiris, Panagiota Ntonti, Konstantinos Ntitsos, Andreas Katsanos, Haris Sideroudi, Vasilios Kozobolis
BACKGROUND: The primary objective of this study was to investigate the level of agreement between IOL-Master and OB-820 ocular biometers. MATERIALS AND METHODS: In this prospective randomized case series, we measured the anterior chamber depth (ACD), the axial length (AL), the corneal radii (R1, R2), the ratio of mean corneal radius and spherical equivalent and the corneal astigmatism (cylinder [Cyl]) before and after cataract extraction surgery. RESULTS: Significant differences between pre- and postoperative data were observed for ACD for both biometric devices (P<0...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28356712/a-protocol-for-topographic-guided-corneal-repair-utilizing-the-us-food-and-drug-administration-approved-wavelight-contoura
#14
Manoj Motwani
PURPOSE: To demonstrate how Wavelight Contoura can be used to repair corneas damaged by trauma and prior poor surgical outcomes. METHODS: Four representative eyes are presented that show different scenarios in which highly irregular corneas can be corrected with Wavelight Contoura using a protocol (named the San Diego Protocol) designed to use the information in Contoura processing. Both laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) were used...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28192589/a-critical-evaluation-of-refractive-outcomes-following-lasik-for-moderate-to-high-astigmatism-using-two-excimer-laser-platforms
#15
COMPARATIVE STUDY
Sudi Patel, Maja Bohac, Alma Biscevic, Mateja Koncarevic, Marija Anticic, Nikica Gabric
PURPOSE: To calculate the surgically induced astigmatism (SIA) following LASIK and identify any association between SIA and the target induced astigmatism (TIA) at 1 year postoperatively. METHODS: The SIA was calculated using the TIA and residual astigmatism values for [A] myopic astigmatism and [B] mixed astigmatism treated with either the [I] WaveLight Allegretto EyeQ 400-Hz (Alcon Laboratories, Inc. Fort Worth, TX) or [II] Schwind Amaris 750S (Schwind eye-tech-solutions, Kleinostheim, Germany) platforms...
February 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28115827/comparison-and-analysis-of-fda-reported-visual-outcomes-of-the-three-latest-platforms-for-lasik-wavefront-guided-visx-idesign-topography-guided-wavelight-allegro-contoura-and-topography-guided-nidek-ec-5000-catz
#16
Majid Moshirfar, Tirth J Shah, David Franklin Skanchy, Steven H Linn, Paul Kang, Daniel S Durrie
PURPOSE: To compare and analyze the differences in visual outcomes between Visx iDesign Advanced WaveScan Studio™ System, Alcon Wavelight Allegro Topolyzer and Nidek EC-5000 using Final Fit™ Custom Ablation Treatment Software from the submitted summary of safety and effectiveness of the US Food and Drug Administration (FDA) data. METHODS: In this retrospective comparative study, 334 eyes from Visx iDesign, 212 eyes from Alcon Contour, and 135 eyes from Nidek CATz platforms were analyzed for primary and secondary visual outcomes...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28068440/a-prospective-study-to-compare-visual-outcomes-between-wavefront-optimized-and-topography-guided-ablation-profiles-in-contralateral-eyes-with-myopia
#17
COMPARATIVE STUDY
Rohit Shetty, Rushad Shroff, Kalyani Deshpande, Roshan Gowda, Sumeet Lahane, Chaitra Jayadev
PURPOSE: To analyze refractive outcomes of wavefront-optimized (WFO) ablation and topography-guided custom ablation (TCAT) profiles using the Allegretto Wave excimer laser platform (Alcon Laboratories, Inc., Fort Worth, TX) in the treatment of myopia. METHODS: Sixty eyes of 30 patients who underwent LASIK were included in this prospective interventional study. WFO ablation was performed in one eye (WFO group) and TCAT in the fellow eye (TCAT group). The WaveLight FS200 femtosecond laser (Alcon Laboratories, Inc...
January 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28050320/changes-in-anterior-chamber-depth-after-phacoemulsification-in-pseudoexfoliative-eyes-and-their-effect-on-accuracy-of-intraocular-lens-power-calculation
#18
Sirel Gür Güngör, Ahmet Akman, Leyla Asena, Mustafa Aksoy, Almila Sarıgül Sezenöz
OBJECTIVES: To compare anterior chamber depth (ACD) changes after phacoemulsification surgery in patients with pseudoexfoliation syndrome (PEX) and normal patients using an anterior segment imaging method. Another aim of this study was to evaluate the effect of these changes on the accuracy of intraocular lens (IOL) power calculation and postoperative refraction. MATERIALS AND METHODS: Twenty-two eyes of 22 patients with PEX and 30 eyes of 30 normal patients who underwent uneventful phacoemulsification surgery and IOL implantation were included in the study...
December 2016: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28002091/vector-analysis-of-1-year-astigmatic-outcomes-from-a-randomized-fellow-eye-comparison-of-photorefractive-keratectomy-using-2-excimer-laser-platforms
#19
Brian C Toy, Edward E Manche
OBJECTIVE: To compare the astigmatic outcomes of photorefractive keratectomy (PRK) with a wavefront-guided (WFG) and a wavefront-optimized (WFO) excimer laser performed on two different platforms. METHODS: Setting: institutional. DESIGN: Prospective, randomized, fellow eye comparison clinical trial. PARTICIPANTS: A total of 142 eyes of 71 patients with myopia of 12 diopters (D) or less and astigmatism of 3D or less were enrolled at the Byers Eye Institute at Stanford between April 2009 and March 2011...
December 19, 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/27774802/-relationship-between-corneal-surface-temperature-and-air-flow-conditions-during-refractive-laser-eye-surgery-using-three-different-excimer-lasers
#20
Csaba Szekrényesi, Gábor László Sándor, Andrea Gyenes, Huba Kiss, Tamás Filkorn, Zoltán Nagy
INTRODUCTION: Thermal conditions during photorefractive keratectomy might be an important issue related to the corneal wound healing and long-term outcomes. AIM: Authors tried to find out the importance of temperature conditions during the treatment. METHOD: One eye of 90 patients has been included into the study. Photorefractive keratoctomy was applied with Carl Zeiss MEL 70, MEL 80 and Wavelight Allegretto excimer lasers. EBRO TLC 730 infrared thermometer was used for the measurement of surface temperature of the cornea before epithelial removal, as well as before and after the treatment...
October 2016: Orvosi Hetilap
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