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Small lenticule extraction laser

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https://www.readbyqxmd.com/read/29141390/-the-clinical-analysis-of-corneal-interface-fluid-syndrome-after-laser-lamellar-corneal-refractive-surgery
#1
K J Lin, J Chen, W Lin, X D Lin, Y M Zhou, L D Zheng, Y Tong
Objective: To analysis, the clinical characteristics, refractive changes, and clinical treatment of interface fluid syndrome after laser lamellar corneal refractive surgery. Methods: During Dec. 2010 to Apr. 2016. In total 6 cases(9 eyes), 3 cases were bilateral, 3 cases were unilateral. Five patients were male and 1 was female. The age of the patients ranged from 20 to 29 years was (24.83±4.02) years. Six cases(9 eyes)of IFS were diagnosed at our hospital. The history and complete ophthalmic examination that include Slit-lamp examination, Slit-lamp photography, refraction, corneal thickness measurement, corneal endothelial cell counting, IOP, anterior segment OCT(AS-OCT), exams were recorded...
November 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29117420/intraoperative-optical-coherence-tomography-guided-management-of-cap-lenticule-adhesion-during-smile
#2
Jayanand Urkude, Jeewan S Titiyal, Namrata Sharma
PURPOSE: To report successful lenticule extraction using intraoperative optical coherence tomography (OCT) in a case of cap-lenticule adhesion during small incision lenticule extraction (SMILE). METHODS: Case report. RESULTS: A 22-year-old patient with a refractive error of -5.00 -0.50 × 120° and -5.00 -0.75 × 60° in the right and left eyes, respectively, was scheduled for SMILE. The lenticule was created using the VisuMax femtosecond laser system (Carl Zeiss Meditec, Jena, Germany)...
November 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29102130/early-clinical-outcomes-after-small-incision-lenticule-extraction-surgery-smile
#3
Alberto Recchioni, Andreas Hartwig, Jay Dermott, Sundeep Vaswani, Jay Bhatt, Robert Morris, Clare O'Donnell
PURPOSE: Dry eye is known to impact on clinical outcomes after laser vision correction and the use of a newer 'all femtosecond laser' surgical approach may be associated with less impact on the ocular surface post-operatively. The purpose of this study was to evaluate the early clinical outcomes and tear instability after the first small incision lenticule extraction (SMILE) cases undertaken by three surgeons at a single site in the UK. METHODS: Retrospective audit...
October 25, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29101408/corneal-biomechanical-changes-and-tissue-remodeling-after-smile-and-lasik
#4
Rohit Shetty, Mathew Francis, Rushad Shroff, Natasha Pahuja, Pooja Khamar, Molleti Girrish, Rudy M M A Nuijts, Abhijit Sinha Roy
Purpose: To evaluate transient corneal tissue healing and biomechanical changes between laser in situ keratomileusis (LASIK) and small incision lenticule extraction (SMILE) eyes. Methods: In each patient, one eye underwent LASIK and the other underwent SMILE. Optical coherence tomography (OCT) and dynamic Scheimpflug imaging (Corvis-ST) was used to assess tissue healing and biomechanics, respectively. Analyses of OCT scans yielded corneal speckle distribution (CSD) and Bowman's roughness index (BRI)...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29066773/biomechanical-simulation-of-stress-concentration-and-intraocular-pressure-in-corneas-subjected-to-myopic-refractive-surgical-procedures
#5
Po-Jen Shih, I-Jong Wang, Wen-Feng Cai, Jia-Yush Yen
Recent advances in the analysis of corneal biomechanical properties remain difficult to predict the structural stability before and after refractive surgery. In this regard, we applied the finite element method (FEM) to determine the roles of the Bowman's membrane, stroma, and Descemet's membrane in the hoop stresses of cornea, under tension (physiological) and bending (nonphysiological), for patients who undergo radial keratotomy (RK), photorefractive keratectomy (PRK), laser-assisted in situ keratomileusis (LASIK), or small incision lenticule extraction (SMILE)...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28979096/ectasia-following-small-incision-lenticule-extraction-smile-a-review-of-the-literature
#6
REVIEW
Majid Moshirfar, Julio C Albarracin, Jordan D Desautels, Orry C Birdsong, Steven H Linn, Phillip C Hoopes
PURPOSE: Four cases of corneal ectasia after small-incision lenticule extraction (SMILE) have been reported. In this review, we provide an overview of the published literature on corneal ectasia after SMILE and risk factors associated with this complication. METHODS: Case reports were identified by a search of seven electronic databases for pertinent heading terms between 2011 and July 2017. We identified patient characteristics and surgical details including preoperative topography, central corneal thickness, and anterior keratometry (Km)...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28965357/in-vivo-confocal-microscopic-investigation-of-the-cornea-after-autologous-implantation-of-lenticules-obtained-through-small-incision-lenticule-extraction-for-treatment-of-hyperopia
#7
Meiyan Li, Meng Li, Ling Sun, Tian Han, Lan Ding, Jun Xiang, Xingtao Zhou
PURPOSE: To investigate re-innervation in the implanted lenticule, as well as changes to the cornea, after correcting hyperopia with an autologous implantation of a lenticule obtained through small incision lenticule extraction (SMILE). METHODS: This study retrospectively analysed re-innervation in the implanted lenticule, as well as microscopic morphological changes in the corneal architecture of the recipient cornea in five patients (with myopia in one eye and hyperopia in the contralateral eye) who received SMILE in the myopic eye and femtosecond laser in situ keratomileusis (FS-LASIK) combined with lenticule implantation in the contralateral hyperopic eye...
October 1, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28963702/in-vivo-confocal-laser-microscopy-of-morphologic-changes-after-small-incision-lenticule-extraction-with-accelerated-cross-linking-smile-xtra-in-patients-with-thin-corneas-and-high-myopia
#8
Yugui Zhou, Manli Liu, Ting Zhang, Hua Zheng, Yuan Sun, Xiaonan Yang, Shengbei Weng, Haiqin Lin, Quan Liu
PURPOSE: To evaluate the microstructural modifications and safety of small incision lenticule extraction combined with accelerated cross-linking (SMILE Xtra) in high myopia and thin corneas by means of in vivo confocal microscopy (IVCM) and 3D-OCT after a 6-month follow-up. METHODS: Forty-three eyes with high myopia and thin corneas were enrolled. All eyes underwent SMILE procedure. After the lenticule was extracted, 0.25% riboflavin was injected into the interface and allowed to diffuse for 60 s...
September 29, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28944205/clinical-outcomes-of-small-incision-lenticule-extraction-versus-femtosecond-laser-assisted-lasik-for-myopia-a-meta-analysis
#9
Huan Yan, Li-Yan Gong, Wei Huang, Yan-Li Peng
AIM: To evaluate the possible differences in visual quality between small incision lenticule extraction (SMILE) and femtosecond laser in situ keratomileusis (FS-LASIK) for myopia. METHODS: A Meta-analysis was performed. Patients were from previously reported comparative studies treated with SMILE versus FS-LASIK. The PubMed, EMBASE, Cochrane, Web of Science and Chinese databases (i.e. WANFANG and CNKI) were searched in Nov. of 2016 using RevMan 5.1 version software...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28928982/corneal-spherical-aberration-and-corneal-asphericity-after-small-incision-lenticule-extraction-and-femtosecond-laser-assisted-lasik
#10
Hui Zhang, Yan Wang, Hua Li
PURPOSE: To investigate corneal spherical aberration and corneal asphericity after small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK). METHODS: This study enrolled 70 patients having SMILE and 64 subjects receiving FS-LASIK. The preoperative spherical equivalent (SE) was -5.83 ± 1.23 diopters (D) and -6.20 ± 1.52 D, respectively. The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), SE, corneal spherical aberration, and asphericity over the 6...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28880337/effect-of-lowering-laser-energy-on-the-surface-roughness-of-human-corneal-lenticules-in-smile
#11
Yong Woo Ji, Minseo Kim, David Sung Yong Kang, Dan Z Reinstein, Timothy J Archer, Jin Young Choi, Eung Kweon Kim, Hyung Keun Lee, Kyoung Yul Seo, Tae-Im Kim
PURPOSE: To determine the effect of lowering femtosecond laser energy on the surface quality of the intrastromal interface during small incision lenticule extraction (SMILE). METHODS: Forty age- and diopter-matched female patients (40 eyes) with moderate myopia received SMILE with different energy levels (100 to 150 nJ) and fixed spot separation (4.5 μm). Five human corneal lenticules from each energy group were evaluated by atomic force microscopy and scanning electron microscopy (SEM)...
September 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28822026/corneal-thickness-residual-stromal-thickness-and-its-effect-on-opaque-bubble-layer-in-small-incision-lenticule-extraction
#12
Jiaonan Ma, Yan Wang, Liuyang Li, Jiamei Zhang
PURPOSE: To evaluate the effects of the central corneal thickness (CCT) and residual stromal thickness (RST) on the formation of opaque bubble layer (OBL) during small-incision lenticule extraction (SMILE). METHODS: A total of 345 eyes from Refractive Surgery Center database at Tianjin Eye Hospital that had been subjected to SMILE surgery and followed for 6 months were included in this study and divided into OBL and OBL-free groups. Preoperative, intraoperative, and postoperative data for all eyes were evaluated and analyzed using multivariate regression analysis...
August 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28808774/-refractive-lenticule-extraction-the-relex-smile-technique-video-article
#13
REVIEW
M Blum, W Sekundo
Refractive lenticule extraction (ReLEx/SMILE) is a refractive surgical method developed by the authors in stages primarily for correction of myopia and myopic astigmatism, in which a femtosecond laser is exclusively used. In the (ReLEx/SMILE) method a refractive lenticule is generated by the femtosecond laser, which is subsequently extracted through a small incision. Opening of the corneal surface with a flap and use of an excimer laser is no longer necessary. In 2013 the method was newly assessed and classified by the Joint Commisssion for Refractive Surgery (KRC) of the Professional Association of Ophthalmologists (BVA) and the German Ophthalmological Society (DOG)...
September 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28799958/learning-curve-of-small-incision-lenticule-extraction-challenges-and-complications
#14
Jeewan S Titiyal, Manpreet Kaur, Anubha Rathi, Ruchita Falera, Manthan Chaniyara, Namrata Sharma
PURPOSE: To describe the intraoperative complications observed during the initial learning curve of small incision lenticule extraction (SMILE) and their management. METHODS: Prospective evaluation of 100 consecutive eyes (50 patients) undergoing SMILE was performed at an apex tertiary care ophthalmic center. Patients older than 18 years with a stable refractive error ranging from -1.0 to -10.0 D myopia and up to 3.0 D astigmatism were included. Any intraoperative complications and their management were noted...
August 9, 2017: Cornea
https://www.readbyqxmd.com/read/28771544/comparison-of-postoperative-visual-quality-after-smile-and-lasek-for-high-myopia-a-1-year-outcome
#15
COMPARATIVE STUDY
Xiaoyu Zhu, Leilei Zou, Manrong Yu, Chen Qiu, Minjie Chen, Jinhui Dai
PURPOSE: To compare the 1-year outcome of visual quality after laser-assisted subepithelial keratomileusis (LASEK) and femtosecond laser-assisted small incision lenticule extraction (SMILE) for high myopia correction. MATERIALS AND METHODS: This prospective, comparative study included 24 eyes of 24 patients in the LASEK group, with a mean spherical equivalent (SE) of -7.59 ± 1.32 diopters, and 26 eyes of 26 patients in the SMILE group, with a mean SE of -7.91 ± 1...
2017: PloS One
https://www.readbyqxmd.com/read/28761329/comparison-of-different-intraocular-pressure-measurement-techniques-in-normal-eyes-and-post-small-incision-lenticule-extraction
#16
Mohamed Hosny, Fayrouz Aboalazayem, Hoda El Shiwy, Mohsen Salem
PURPOSE: The purpose of the study was to determine the accuracy of intraocular pressure (IOP) measurement after small incision lenticule extraction (SMILE) using Goldmann applanation tonometry (GAT) and ocular response analyzer (ORA). METHODS: This is a prospective clinical study that was conducted on 30 eyes in the interval between February 2016 and September 2016. The age of the patients ranged between 19 and 40 years. The patients underwent SMILE surgery using the femto laser...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28732617/vector-analysis-of-astigmatic-changes-after-small-incision-lenticule-extraction-and%C3%A2-wavefront-guided-laser-in-situ-keratomileusis
#17
Mounir A Khalifa, Ahmed M Ghoneim, Mohamed Shafik Shaheen, David P Piñero
PURPOSE: To evaluate and compare the efficacy of the astigmatic correction after wavefront-guided laser in situ keratomileusis (LASIK) and small-incision lenticule extraction (SMILE) and in myopic eyes. DESIGN: Prospective case series. SETTING: Horus Vision Correction Center and Ellite Vision Correction Center, Alexandria, Egypt. METHODS: Myopic eyes with astigmatism up to 4.00 diopters (D) had wavefront-guided LASIK or small-incision lenticule extraction...
June 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28732614/incidence-and-management-of-intraoperative-complications-during-small-incision-lenticule-extraction-in-3004-cases
#18
Yan Wang, Jiaonan Ma, Jiamei Zhang, Rui Dou, Hui Zhang, Liuyang Li, Wei Zhao, Pinghui Wei
PURPOSE: To assess the intraoperative complications during small-incision lenticule extraction (SMILE) for myopia and myopic astigmatism correction and evaluate visual outcomes 6 months postoperatively. SETTING: Tianjin Eye Hospital, Tianjin, China. DESIGN: Retrospective case series. METHODS: Patients who had small-incision lenticule extraction surgery were examined 1 day, 7 days, 1 month, 3 months, and 6 months postoperatively...
June 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28708898/retreatment-strategies-following-small-incision-lenticule-extraction-smile-in-vivo-tissue-responses
#19
Andri K Riau, Yu-Chi Liu, Chris H L Lim, Nyein C Lwin, Ericia P Teo, Gary H Yam, Donald T Tan, Jodhbir S Mehta
With any refractive correction, including Small Incision Lenticule Extraction (SMILE), there may be a residual refractive error that requires a retreatment. Here, we investigated the tissue responses following various retreatment procedures in a rabbit model of SMILE. All rabbits underwent a -6.00D correction with SMILE. Two weeks later, they underwent -1.00D enhancement by: (i) VisuMax Circle, followed by excimer ablation (S+C); (ii) secondary SMILE anterior to the primary procedure (S+SE); or (iii) surface ablation (S+P), and were examined for 28 days...
2017: PloS One
https://www.readbyqxmd.com/read/28681903/contralateral-eye-comparison-of-smile-and-flap-based-corneal-refractive-surgery-computational-analysis-of-biomechanical-impact
#20
Ibrahim Seven, Ali Vahdati, Iben Bach Pedersen, Anders Vestergaard, Jesper Hjortdal, Cynthia J Roberts, William J Dupps
PURPOSE: Computational analyses were performed to quantify and directly compare the biomechanical impact of flapless and flap-based procedures in a series of patients undergoing small incision lenticule extraction (SMILE) in one eye and flap-based femtosecond lenticule extraction in the other. METHODS: Tomographic data from 10 eyes of 5 patients undergoing femtosecond laser refractive lenticule extraction for myopic astigmatism with or without a stromal flap (femtosecond lenticule extraction in one eye, SMILE in the contralateral eye) were used to generate computational models...
July 1, 2017: Journal of Refractive Surgery
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