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small incision lenticule extraction

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https://www.readbyqxmd.com/read/29789156/comparing-corneal-higher-order-aberrations-in-corneal-wavefront-guided-transepithelial-photorefractive-keratectomy-versus-small-incision-lenticule-extraction
#1
Hun Lee, David Sung Yong Kang, Dan Z Reinstein, Samuel Arba-Mosquera, Eung Kweon Kim, Kyoung Yul Seo, Tae-Im Kim
PURPOSE: To evaluate the changes in corneal higher-order aberrations (HOAs) after corneal wavefront-guided transepithelial photorefractive keratectomy (PRK) and small-incision lenticule extraction (SMILE). SETTING: Yonsei University College of Medicine and Eyereum Eye Clinic, South Korea. DESIGN: Retrospective case series. METHODS: Medical records of patients having either corneal wavefront-guided transepithelial PRK or small-incision lenticule extraction were examined...
May 19, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29785082/control-matched-comparison-of-refractive-and-visual-outcomes-between-small-incision-lenticule-extraction-and-femtosecond-laser-assisted-lasik
#2
Takahiro Kataoka, Tomoya Nishida, Azusa Murata, Mayuka Ito, Naoki Isogai, Rie Horai, Takashi Kojima, Yoko Yoshida, Tomoaki Nakamura
Purpose: This retrospective case-matched study aimed to compare visual and refractive outcomes between small incision lenticule extraction (SMILE) and LASIK. Patients and methods: Patients who underwent SMILE (34 eyes of 23 patients) or LASIK (34 eyes of 24 patients) were enrolled and matched according to preoperative manifest refractive spherical equivalents. The mean preoperative manifest refractive spherical equivalent was -4.69±0.6 and -4.67±0.64 D in the SMILE and LASIK groups, respectively...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29782336/a-review-of-small-incision-lenticule-extraction-complications
#3
Ronald R Krueger, Caio S Meister
PURPOSE OF REVIEW: As a flapless procedure, SMILE brings benefits to refractive surgery, such as lower corneal biomechanical impact, less dry eye risk and less stromal bed exposure. However, the longer learning curve can be a risk factor for complications. This article aims to discuss SMILE complications and proposes a categorized analysis of occurrences, dividing into two groups: intraoperative and postoperative complications. Among intraoperative, we also suggest a subdivision between those related to the laser (lenticule construction), tissue separation (lenticule dissection) and tissue removal (lenticule extraction)...
May 17, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29776767/-visual-outcomes-5-years-after-small-incision-lenticule-extraction-smile-surgery-on-spherocylindrical-myopia-eyes-from-616-eyes
#4
J Burazovitch, H Ferguene, D Naguszewski
OBJECTIVE: Determine if the visual criteria of the technique of surgery refractive by Femtosecond Laser-assisted duckweed Extraction - Small Lenticule Extraction (FLEx-Smile® ), realized in the laser femtosecond VisuMax® (Carl Zeiss Meditec, Jena, Germany), are stable, secure, effective and predictable in the long term, to the nearsighted and astigmatic. MODEL OF THE STUDY: Retrospective study, monocentric with data collected between March 2012 and March 2017...
May 15, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29757850/corneal-irregular-astigmatism-and-curvature-changes-after-small-incision-lenticule-extraction-three-year-follow-up
#5
Haris Sideroudi, Apostolos Lazaridis, Anke Messerschmidt-Roth, Georgios Labiris, Vassilios Kozobolis, Walter Sekundo
PURPOSE: To evaluate the long-term changes in anterior and posterior corneal irregular astigmatism and curvatures after small incision lenticule extraction (SMILE). METHODS: Fifty eyes of 28 patients underwent SMILE for myopic astigmatism. All procedures were performed using the VisuMax® femtosecond laser. A Scheimpflug camera was used for preoperative and 3-year postoperative tomography. Anterior and posterior corneal Fourier parameters (spherical component, regular astigmatism, asymmetry, and irregularity) and curvature data were evaluated and compared within 2 subgroups according to the magnitude of the refractive correction (low myopia group: spherical equivalent (SEQ) ≥ -6 D; high myopia group: (SEQ) < -6 D)...
April 27, 2018: Cornea
https://www.readbyqxmd.com/read/29754993/topography-guided-lasik-versus-small-incision-lenticule-extraction-long-term-refractive-and-quality-of-vision-outcomes
#6
Anastasios John Kanellopoulos
No abstract text is available yet for this article.
May 10, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29738592/treatment-of-corneal-ectasia-by-implantation-of-an-allogenic-corneal-lenticule
#7
Meiyan Li, Feng Zhao, Meng Li, Michael C Knorz, Xingtao Zhou
PURPOSE: To describe a case in which post-LASIK corneal ectasia was treated using an allogeneic lenticule implanted into the recipient eye. METHODS: A 29-year-old man presented with bilateral ectasia 10 years after LASIK. Manifest refraction was -1.50 -3.25 × 15° in the right eye and -13.50 -6.00 × 10° in the left eye. Because of contact lens intolerance in the left eye, the authors decided to implant an allogenic corneal lenticule, created by small incision lenticule extraction with the VisuMax laser (Carl Zeiss Meditec, Jena, Germany) in a donor eye with a refraction of +5...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738585/circle-enhancement-after-myopic-smile
#8
Jakob Siedlecki, Nikolaus Luft, Wolfgang J Mayer, Martin Siedlecki, Daniel Kook, Bertram Meyer, Martin Bechmann, Rainer Wiltfang, Siegfried G Priglinger, Martin Dirisamer
PURPOSE: To report the outcomes of enhancement after small incision lenticule extraction (SMILE) using the VisuMax CIRCLE option (Carl Zeiss Meditec AG, Jena, Germany), which converts the SMILE cap into a femtosecond LASIK flap for secondary excimer laser application. METHODS: Of 2,065 SMILE procedures, 22 eyes (1.1%) re-treated with CIRCLE with a follow-up of 3 months were included in the analysis. SMILE was performed in the usual manner. For re-treatment, the CIRCLE procedure was performed with pattern D flap creation on the VisuMax system and subsequent excimer laser ablation with a Zeiss MEL 90 laser (Carl Zeiss Meditec) with plano target in all cases...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29708928/revisiting-monovision-for-presbyopia
#9
Abdallah Mahrous, Jessica B Ciralsky, Edward C Lai
PURPOSE OF REVIEW: Presbyopia is an inevitable age-related loss of accommodation that results in spectacle dependence with common everyday near-vision tasks. Many surgical approaches to presbyopic correction have been investigated, with monovision correction being amongst the most common and attractive options. In this article, we will review the advantages and disadvantages of the new modalities of presbyopic monovision correction. RECENT FINDINGS: New methods such as mini-monovision, corneal inlays, and multifocal corneal ablation aim to maximize stereopsis and decrease the anisometropic side effects of conventional monovision...
April 27, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29703293/unilateral-corneal-ectasia-after-small-incision-lenticule-extraction-in-a-43-year-old-patient
#10
Jean Christophe Gavrilov, Raphael Atia, Vincent Borderie, Laurent Laroche, Nacim Bouheraoua
Unilateral corneal ectasia developed after small-incision lenticule extraction for mild myopia in a 43-year-old man with preoperative asymmetric astigmatism. The ectasia was diagnosed 4 years postoperatively. Preoperative data showed asymmetric astigmatism with no signs of forme fruste keratoconus. Inferior anterior curvature steepening exceeded 2.00 diopters without bulging of the posterior curvature, and pachymetric thickness exceeded 515 μm. Corneal ectasia can occur after small-incision lenticule extraction in patients older than 40 years with preoperative asymmetric astigmatism...
March 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29685776/clinical-evaluation-of-a-new-correction-algorithm-for-dynamic-scheimpflug-analyzer-tonometry-before-and-after-laser-in-situ-keratomileusis-and-small-incision-lenticule-extraction
#11
Kai-Jung Chen, Akram Joda, Riccardo Vinciguerra, Ashkan Eliasy, Shervin Mir Mohi Sefat, Daniel Kook, Brendan Geraghty, Cynthia J Roberts, Ahmed Elsheikh
PURPOSE: To compare a biomechanically corrected intraocular pressure (bIOP) algorithm provided by the dynamic Scheimpflug analyzer (Corvis ST) with Goldmann applanation tonometry IOP (Goldmann IOP) and standard dynamic Scheimpflug analyzer IOP measurements before and after laser in situ keratomileusis (LASIK) and refractive lenticule extraction small-incision lenticule extraction (SMILE) surgeries. SETTING: Smile Eye Clinic, Munich, Germany, and University of Liverpool, Liverpool, United Kingdom...
April 20, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29674843/intraoperative-complications-of-refractive-small-incision-lenticule-extraction-in-the-early-learning-curve
#12
Abdelmonem M Hamed, Shereef M Abdelwahab, Tarek T Soliman
Purpose: To study the intraoperative complications of refractive small incision lenticule extraction (ReSMILE push-up technique), and to record the mean intraoperative duration time of all surgeries for the refractive surgeon in his early learning curve. Setting: Ebsar Eye Center, Benha, Egypt. Design: A prospective, single-center, cohort clinical study. Methods: This prospective, single-center, cohort clinical study was done on patients with myopia and myopic astigmatism, who were enrolled for SMILE surgeries...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29658366/a-novel-case-using-femtosecond-laser-acquired-lenticule-for-recurrent-pterygium-case-report-and-literature-review
#13
Om Prakash Pant, Ji-Long Hao, Dan-Dan Zhou, Fan Wang, Cheng-Wei Lu
Small incision lenticule extraction (SMILE) is a minimally invasive, safe and flapless femtosecond laser technique used mainly to correct myopia through extraction of a corneal lenticule. Lenticules obtained in this way are transparent and of high quality, and thus, can be used to treat other corneal diseases. A 65-year-old male patient presented with recurrent pterygium complicated by thin cornea. The patient was treated surgically using a SMILE-extracted lenticule to avoid further complications and to maintain eyeball integrity...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29644238/mechanisms-of-optical-regression-following-corneal-laser-refractive-surgery-epithelial-and-stromal-responses
#14
REVIEW
Majid Moshirfar, Jordan D Desautels, Brian D Walker, Michael S Murri, Orry C Birdsong, Phillip C Hoopes
Laser vision correction is a safe and effective method of reducing spectacle dependence. Photorefractive Keratectomy (PRK), Laser In Situ Keratomileusis (LASIK), and Small-Incision Lenticule Extraction (SMILE) can accurately correct myopia, hyperopia, and astigmatism. Although these procedures are nearing optimization in terms of their ability to produce a desired refractive target, the long term cellular responses of the cornea to these procedures can cause patients to regress from the their ideal postoperative refraction...
2018: Medical Hypothesis, Discovery and Innovation in Ophthalmology
https://www.readbyqxmd.com/read/29616154/higher-order-aberrations-following-hyperopia-treatment-small-incision-lenticule-extraction-laser-assisted-in-situ-keratomileusis-and-lenticule-implantation
#15
Yu-Chi Liu, Jiaxin Wen, Ericia Pei Wen Teo, Geraint P Williams, Nyein Chan Lwin, Jodhbir S Mehta
Purpose: To compare the postoperative higher-order-aberrations (HOAs) after hyperopic small incision lenticule extraction (SMILE), hyperopic laser-assisted in situ keratomileusis ( LASIK), and lenticule implantation for correction of hyperopia. Methods: Eighteen monkeys were divided to six groups: +2.00 D and +4.00 D hyperopic SMILE, +2.00 D and +4.00 D hyperopic LASIK ( n = 6 eyes for each), and lenticule implantation with a -2.00 D and -4.00 D lenticule ( n = 3 eyes for each)...
April 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29615281/corneal-biomechanics-after-laser-refractive-surgery-unmasking-differences-between-techniques
#16
REVIEW
Joaquín Fernández, Manuel Rodríguez-Vallejo, Javier Martínez, Ana Tauste, David P Piñero
The hypothesis that small-incision lenticule extraction provides better preservation of corneal biomechanics than previous laser refractive techniques has led to a growth in the interest in clinical and experimental research in this field. This hypothesis is based on the fact that corneal layers with greater stiffness are preserved with this new technique. However, this hypothesis is controversial because clinical research has shown a great disparity in the outcomes. In this review, we performed an in-depth analysis of the factors that might affect corneal biomechanics in laser refractive surgery procedures from a macrostructural to a microstructural viewpoint...
March 31, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29610851/refractive-correction-and-biomechanical-strength-following-smile-with-a-110-or-160-%C3%AE-m-cap-thickness-evaluated-ex-vivo-by-inflation-test
#17
Iben Bach Damgaard, Anders Ivarsen, Jesper Hjortdal
Purpose: To examine the refractive correction and corneal biomechanical strength after small incision lenticule extraction (SMILE) by using a 110- or 160-μm cap thickness. Methods: Thirty-two human donor corneas were allocated into 4 groups, combining one of two cap thicknesses (110 and 160 μm) with one of two spherical corrections (-4 D and -8 D). Each cornea was mounted on an artificial anterior chamber. The chamber pressure was adjusted by an attached 8% dextran media column...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29600182/three-year-results-of-small-incision-lenticule-extraction-and-wavefront-guided-femtosecond-laser-assisted-laser-in-situ-keratomileusis-for-correction-of-high-myopia-and-myopic-astigmatism
#18
Li-Kun Xia, Jing Ma, He-Nan Liu, Ce Shi, Qing Huang
AIM: To compare and calculate the 3-year refractive results, higher-order aberrations (HOAs), contrast sensitivity (CS) and dry eye parameters after small incision lenticule extraction (SMILE) and wavefront-guided femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for correction of high myopia and myopic astigmatism. METHODS: In this prospective, non-randomized comparative study, 78 eyes with spherical equivalent (SE) of -8.11±1.09 diopters (D) received a SMILE surgery, and 65 eyes with SE of -8...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29600180/cap-morphology-after-small-incision-lenticule-extraction-and-its-effects-on-intraocular-scattering
#19
Dan Fu, Lin Wang, Xing-Tao Zhou, Zhi-Qiang Yu
AIM: To investigate cap morphology after small-incision lenticule extraction (SMILE) and its effects on intraocular scattering. METHODS: Sixty-five eyes of 33 patients undergoing SMILE were enrolled. In addition to regular evaluation, Fourier-domain optical coherence tomography was used to investigate cap thickness at 1d, 1wk, 1 and 3mo postoperatively. The optical quality including modulation transfer function cutoff frequency, Strehl ratio, Optical Quality Analysis System (OQAS) values, and objective scattering index (OSI), were evaluated using OQAS™...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29590157/hyperopic-refractive-correction-by-lasik-smile-or-lenticule-reimplantation-in-a-non-human-primate-model
#20
Geraint P Williams, Benjamin Wu, Yu Chi Liu, Ericia Teo, Chan L Nyein, Gary Peh, Donald T Tan, Jodhbir S Mehta
Hyperopia is a common refractive error, apparent in 25% of Europeans. Treatments include spectacles, contact lenses, laser interventions and surgery including implantable contact lenses and lens extraction. Laser treatment offers an expedient and reliable means of correcting ametropia. LASIK is well-established however SMILE (small-incision lenticule extraction) or lenticule implantation (derived from myopic laser-correction) are newer options. In this study we compared the outcomes of hyperopic LASIK, SMILE and lenticule re-implantation in a primate model at +2D/+4D treatment...
2018: PloS One
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