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https://www.readbyqxmd.com/read/28068442/oct-study-of-the-femtosecond-laser-opaque-bubble-layer
#1
Gustavo K Marino, Marcony R Santhiago, Steven E Wilson
PURPOSE: To characterize the location and regularity of the opaque bubble layer (OBL) in the corneal stroma after femtosecond laser-assisted LASIK (FS-LASIK) flap generation. METHODS: In this prospective study, 30 eyes of 15 patients who had FS-LASIK surgery for myopia, astigmatism, and/or hyperopia were included. Screen captures were obtained at the end of the flap creation and the eyes with hard type OBL were immediately imaged with anterior segment optical coherence tomography...
January 1, 2017: Journal of Refractive Surgery
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
#2
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/28031696/under-flap-stromal-bed-cxl-for-early-post-lasik-ectasia-a-novel-treatment-technique
#3
Avi Wallerstein, Eser Adiguzel, Mathieu Gauvin, Nima Mohammad-Shahi, Mark Cohen
PURPOSE: Collagen cross-linking (CXL) for post-laser-assisted in situ keratomileusis (LASIK) ectasia (PLE) is traditionally performed either epi-on or epi-off on the corneal surface. This study describes a novel technique in treating early PLE with under-flap CXL (ufCXL) to the stromal bed and reports on 6-month outcomes. PATIENTS AND METHODS: Case series of seven patients (eight eyes) with topography-diagnosed early PLE treated with ufCXL. Inclusion criteria were early, mild PLE defined as new-onset postoperative manifest refraction cylinder ≤1...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28007112/short-term-complications-of-femtosecond-laser-assisted-laser-in-situ-keratomileusis-cuts-review-of-1210-consecutive-cases
#4
Thomas Kohnen, Luisa Schwarz, Matthias Remy, Mehdi Shajari
PURPOSE: To evaluate short-term complications after femtosecond laser cuts for laser in situ keratomileusis (LASIK). SETTING: Department of Ophthalmology, Goethe University, Frankfurt, Germany. DESIGN: Retrospective consecutive case series. METHODS: Consecutive femtosecond laser cuts (1210 cuts in 624 patients) from LASIK performed with the Intralase FS60 between 2006 and 2014 were analyzed. The analysis looked at intraoperative and postoperative complications at 1 day, 1 week, and 1 month and factors with potential impact on the complication rate, such as ablation depth...
December 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28007105/outcomes-and-complications-of-excimer-laser-surgery-in-patients-with-collagen-vascular-and-other-immune-mediated-inflammatory-diseases
#5
Julie M Schallhorn, Steven C Schallhorn, Keith A Hettinger, Jan A Venter, Martina Pelouskova, David Teenan, Stephen J Hannan
PURPOSE: To assess refractive and visual outcomes and postoperative complications in a large number of patients with well-controlled collagen vascular and other immune-mediated inflammatory diseases. SETTING: Optical Express, Glasgow, United Kingdom. DESIGN: Retrospective case series. METHODS: The files were reviewed of patients who had collagen vascular and other immune-mediated inflammatory diseases and who had excimer laser surgery between 2008 and 2015...
December 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27975341/refractive-lenticule-implantation-for-correction-of-ametropia-case-reports-and-literature-review
#6
A Lazaridis, A Messerschmidt-Roth, W Sekundo, S Schulze
The ReLEx® technique allows correction of refractive errors through the creation and extraction of refractive stromal lenticules. Contrary to excimer laser corneal refractive procedures, where the stromal tissue is photoablated, the extracted lenticules obtained with ReLEx® can be preserved. Recent studies and case reports have described autologous re-implantation and allogeneic implantation of refractive lenticules into femtosecond-laser created stromal pockets in order to reverse the refractive outcome of a myopic corneal refractive procedure, correct hyperopia, aphakia, presbyopia and treat keratoconus...
December 14, 2016: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/27956297/laser-in-situ-keratomileusis-flap-stability-in-an-aviator-following-aircraft-ejection
#7
Christopher J Richmond, Patrick D Barker, Edgar M Levine, Elizabeth M Hofmeister
: We present the case of a 28-year-old male F/A-18F Super Hornet naval flight officer who ejected from an aircraft at 13 000 feet at a speed in excess of 350 knots 7 years after uneventful laser in situ keratomileusis (LASIK). The patient was evaluated the day after the ejection. No LASIK flap complications or epithelial defects were found, and the corrected distance visual acuity was 20/15 in both eyes. FINANCIAL DISCLOSURE: None of the authors has a financial or proprietary interest in any material or method mentioned...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27938951/outcomes-of-photorefractive-keratectomy-following-laser-in-situ-keratomileusis-a-cohort-study
#8
Alfonso Iovieno, Joshua C Teichman, Stephanie Low, Sonia N Yeung, Marie Eve Lègarè, Alejandro D Lichtinger, Allan R Slomovic, David S Rootman
OBJECTIVE: To analyze the outcomes of photorefractive keratectomy (PRK) on residual myopia and hyperopia post-laser in situ keratomileusis (LASIK) and to compare these results with PRK on eyes without previous laser refractive surgery. DESIGN: Retrospective comparative cohort study. PARTICIPANTS: Patients undergoing PRK between 2006 and 2010 were reviewed. METHODS: Patients were divided into 4 groups, myopic or hyperopic PRK post-LASIK (mPRK-PL and hPRK-PL, respectively) and myopic or hyperopic PRK on corneas without previous laser refractive surgery (mPRK and hPRK, respectively)...
December 2016: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/27920492/flap-double-twist-technique-for-prevention-of-lasik-flap-striae
#9
Karim Mahmoud Nabil
A novel flap double twist technique was applied to reduce the incidence of post-laser-assisted in situ keratomileusis (LASIK) flap striae. The flap is floated and stroked in the same way as is done for management of first postoperative day striae, where the method is to float and irrigate the flap into position, followed by applying gentle pressure on the flap with a wet Merocel microsponge and moving the flap away from the hinge position. The sponge is then manually squeezed to become drier, and the flap is continuously stroked in a direction opposite to the hinge...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27899387/activation-of-cytomegalovirus-corneal-endotheliitis-following-laser-in-situ-keratomileusis
#10
Tien-En Tan, Chui Ming Gemmy Cheung, Jodhbir S Mehta
A case of Cytomegalovirus (CMV) corneal endotheliitis following laser in-situ keratomileusis (LASIK) is presented. A 32-year-old man presented 3 weeks after uncomplicated myopic LASIK with unilateral LASIK flap oedema, interface fluid accumulation, keratic precipitates, anterior uveitis and raised intraocular pressure. Despite treatment with topical corticosteroids, he had 3 further recurrent episodes. Specular microscopy showed decreased endothelial cell density and aqueous humour. Polymerase chain reaction (PCR) testing was positive for CMV DNA...
November 29, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27824384/refractive-lenticule-transplantation-for-correction-of-iatrogenic-hyperopia-and-high-astigmatism-after-lasik
#11
Apostolos Lazaridis, Dan Z Reinstein, Timothy J Archer, Stephan Schulze, Walter Sekundo
PURPOSE: To design a technique for intrastromal transplantation of stromal lenticules with specific refractive power for correction of post-LASIK induced hyperopia and astigmatism. METHODS: A 28-year-old patient was referred for consultation after complicated LASIK for moderate myopia and astigmatism. The refractive error of the right eye was severely overcorrected due to data entry error. Post-LASIK refraction showed high astigmatism (right eye: +6.50 -9.00 @ 84°) and corrected distance visual acuity (CDVA) of 20/32...
November 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27803856/effect-of-femtosecond-and-microkeratome-flaps-creation-on-the-cornea-biomechanics-during-laser-in-situ-keratomileusis-one-year-follow-up
#12
Qian Sun, Zheng-Zheng Deng, Yue-Hua Zhou, Jing Zhang, Xiao-Yan Peng
AIM: To compare the corneal biomechanical outcomes at one year after laser in situ keratomileusis (LASIK) with the flaps created by Ziemer and Moria M2 microkeratome with 110 head and -20 blade. METHODS: Totally 100 eyes of 50 consecutive patients were enrolled in this prospective study and divided into two groups for corneal flaps created by ZiemerFemto LDV and Moria M2 microkeratome with 110 head and -20 blade. Corneal biomechanical properties including cornea resistance factor (CRF) and cornea hysteresis (CH) were measured before and 1, 3, 6, 12mo after surgery by ocular response analyzer...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27799731/microcapillary-sign-of-flap-alignment-in-femtosecond-laser-assisted-in-situ-keratomileusis
#13
Fathy Fawzy, Sherine S Wahba, Nader Fawzy
We present an observational sign that ensures perfect alignment during femtosecond laser-assisted in situ keratomileusis (FS LASIK). Alignment is assured when a microsponge is used to dry the flap and the area of dryness exceeds the area of direct touch of the microsponge. The area might even reach the whole circumference of the flap at the first touch. This sign of alignment can be explained by microcapillary action. This sign was not elicited in flaps created by a microkeratome.
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27722762/small-incision-lenticule-extraction-smile-as-re-treatment-for-a-thick-lasik-flap
#14
Sara Catalan-Lopez, Alba Mariña Portas-Ferradas, Luis Cadarso-Suarez, Adriana Rodriguez-Rodriguez
PURPOSE: To report the case of a residual refractive error after LASIK for moderate myopia successfully re-treated several years later using the small incision lenticule extraction (SMILE) technique. METHODS: Case report. RESULTS: Following LASIK, the patient showed a central flap thickness of 269 microns, whereas residual stromal bed thickness under the flap was 210 microns. SMILE was performed within the flap. In this less invasive surgical procedure, the residual stromal bed is not manipulated and ablation is conducted on the existing flap...
October 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27631415/-the-kamra%C3%A2-inlay-a%C3%A2-realistic-approach
#15
M El-Husseiny, L Daas, A Viestenz, A Langenbucher, B Seitz
BACKGROUND AND PURPOSE: The KAMRA™ inlay (AcuFocus, Irvine, California, USA) is an additional option for correcting presbyopia that has been used for many years in refractive surgery. Our objective is to report our three-month postoperative results of KAMRA™ inlay implantation in terms of near, intermediate and distance vision. PATIENTS AND METHODS: All 24 patients (average age 54.1 ± 6.0 years) were treated with the KAMRA™ inlay in the non-dominant eye (75 % in the left eye) by the same surgeon (MEH)...
September 8, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27630372/a-large-scale-computational-analysis-of-corneal-structural-response-and-ectasia-risk-in-myopic-laser-refractive-surgery
#16
William Joseph Dupps, Ibrahim Seven
PURPOSE: To investigate biomechanical strain as a structural susceptibility metric for corneal ectasia in a large-scale computational trial. METHODS: A finite element modeling study was performed using retrospective Scheimpflug tomography data from 40 eyes of 40 patients. LASIK and PRK were simulated with varied myopic ablation profiles and flap thickness parameters across eyes from LASIK candidates, patients disqualified for LASIK, subjects with atypical topography, and keratoconus subjects in 280 simulations...
August 2016: Transactions of the American Ophthalmological Society
https://www.readbyqxmd.com/read/27621794/superficial-anterior-lamellar-keratoplasty-salk-for-trauma-induced-post-refractive-surgery-corneal-opacity
#17
Anita Ganger, Radhika Tandon, M Vanathi, Pardeep Sagar
PURPOSE: To report a case of post laser in situ keratomileusis (LASIK), nebulomacular corneal opacity following a trauma induced flap dehiscence and was managed with superficial anterior lamellar keratoplasty (SALK). CASE REPORT: A 32-year-old female underwent LASIK 2.5 years back, with a postoperative unaided visual acuity (VA) of 6/6 in both eyes. She was involved in a road traffic accident and sustained blunt trauma to the right eye 5 months before. At the time of presentation, the VA was 1/60 in the right eye...
July 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27621782/intraoperative-flap-complications-in-lasik-surgery-performed-by-ophthalmology-residents
#18
Lorena Romero-Diaz-de-Leon, Juan Carlos Serna-Ojeda, Alejandro Navas, Enrique O Graue-Hernández, Arturo Ramirez-Miranda
PURPOSE: To report the rate of flap-related complications in LASIK surgery performed by in-training ophthalmology residents and to analyze the risk factors for these complications. METHODS: We analyzed 273 flap dissections in 145 patients from March 2013 to February 2014. We included all LASIK surgeries performed by 32 ophthalmology residents using a Moria M2 microkeratome. All the flap-related complications were noted. Comparison between both groups with and without complications was performed with an independent Student's t-test and relative risks were calculated...
July 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27621589/comparison-of-self-reported-quality-of-vision-outcomes-after-myopic-lasik-with-two-femtosecond-lasers-a-prospective-eye-to-eye-study
#19
Christopher S Sáles, Edward E Manche
PURPOSE: To compare self-reported quality of vision (QoV) outcomes after myopic LASIK (laser-assisted in situ keratomileusis) with two femtosecond lasers. DESIGN: Prospective, randomized, eye-to-eye study. METHODS: Consecutive myopic patients were treated with wavefront-guided LASIK bilaterally. Eyes were randomized according to ocular dominance. The flap of one eye was made with the IntraLase FS 60 kHz femtosecond laser with a conventional 70° side-cut, and the flap of the fellow eye was made with the IntraLase iFS 150 kHz femtosecond laser with an inverted 130° side-cut...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27583797/comparison-of-the-demarcation-line-on-asoct-after-simultaneous-lasik-and-different-protocols-of-accelerated-collagen-crosslinking-a-bilateral-eye-randomized-study
#20
Alex L K Ng, Peter S K Kwok, Ricky T K Wu, Vishal Jhanji, Victor C P Woo, Tommy C Y Chan
PURPOSE: To compare the demarcation line depth after 2 different protocols of simultaneous laser in situ keratomileusis and collagen crosslinking (LASIK Xtra). METHODS: Twenty-three patients receiving bilateral LASIK Xtra were included in this comparative interventional study. The corneal stroma was soaked with 0.22% riboflavin for 90 seconds before flap repositioning. One eye was then randomized to receive either 18 mW/cm of ultraviolet A irradiation for 120 seconds or for 180 seconds, whereas the fellow eye received the other irradiation duration...
January 2017: Cornea
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