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Small lenticule extraction laser

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https://www.readbyqxmd.com/read/29776767/-visual-outcomes-5-years-after-small-incision-lenticule-extraction-smile-surgery-on-spherocylindrical-myopia-eyes-from-616-eyes
#1
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
#2
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/29738592/treatment-of-corneal-ectasia-by-implantation-of-an-allogenic-corneal-lenticule
#3
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
#4
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
#5
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/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
#6
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/29658366/a-novel-case-using-femtosecond-laser-acquired-lenticule-for-recurrent-pterygium-case-report-and-literature-review
#7
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
#8
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
#9
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
#10
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/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
#11
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/29590157/hyperopic-refractive-correction-by-lasik-smile-or-lenticule-reimplantation-in-a-non-human-primate-model
#12
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
https://www.readbyqxmd.com/read/29587979/keratophakia-with-autograft-aided-by-a-femtosecond-laser-one-year-follow-up
#13
Claudio Orlich
Autologous tissue from correction of myopia with small-incision lenticule extraction in 1 eye of a patient was used to enhance corneal curvature in the contralateral eye, in which a corneal ulcer had flattened the cornea. Regularization of the corneal tomography was achieved, improving the visual quality and visual capacity of the patient.
February 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29537886/corneal-densitometry-after-femtosecond-laser-assisted-in-situ-keratomileusis-fs-lasik-and-small-incision-lenticule-extraction-smile
#14
Mehdi Shajari, Emanuel Wanner, Vladimir Rusev, Shervin Mir Mohi Sefat, Wolfgang J Mayer, Thomas Kohnen, Siegfried Priglinger, Daniel Kook
PURPOSE: To compare corneal densitometry values after Femtosecond Laser-Assisted In Situ Keratomileusis (Fs-LASIK) and Small Incision Lenticule Extraction (SMILE) using Scheimpflug Imaging. METHODS: Our retrospective clinical trial included a total of 146 eyes where 57 eyes underwent Fs-LASIK and 89 eyes underwent SMILE. Examinations with a Pentacam Scheimpflug device (Oculus, Wetzlar, Germany) were performed before surgery, 1 week, 1 month, 3 months, 6 months, and 1 year after surgery...
May 2018: Current Eye Research
https://www.readbyqxmd.com/read/29429283/-advantages-and-disadvantages-of-femtosecond-laser-assisted-lasik-and-smile
#15
F J Zhang, M S Sun
With the development of excimer laser and femtosecond laser equipment, application of diversified and customized surgical decision in modern corneal refractive surgery has been an inevitable trend. However, how to make a personalized decision with an accurate surgical design to achieve better visual quality becomes the main focus in clinical applications. Small-incision lenticule extraction (SMILE) and femtosecond assisted laser in situ keratomileusis (FS-LASIK) have been commonly acknowledged as the mainstream of corneal refractive surgery for ametropia correction nowadays...
January 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29425387/intraoperative-patient-experience-and-postoperative-visual-quality-after-smile-and-lasik-in-a-randomized-paired-eye-controlled-study
#16
Iben B Damgaard, Marcus Ang, Mohamed Farook, Hla M Htoon, Jodhbir S Mehta
PURPOSE: To compare intraoperative and postoperative subjective patient experience after small incision lenticule extraction (SMILE) and femtosecond laser-assisted LASIK. METHODS: In a prospective, randomized, paired-eye, single-masked clinical trial at Singapore National Eye Centre, 70 patients were randomly treated with SMILE and LASIK in each eye. The intraoperative questionnaire was completed immediately after surgery and included light perception and levels of anxiety, fear, and discomfort...
February 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29416315/comparison-of-corneal-biomechanics-after-myopic-small-incision-lenticule-extraction-compared-to-lasik-an-ex-vivo-study
#17
Anastasios John Kanellopoulos
Purpose: To investigate ex vivo potentially different corneal biomechanical properties after small-incision lenticule extraction (SMILE) versus LASIK for myopic correction. Methods: Thirty human donor corneas were subjected to either myopic SMILE or femtosecond laser-assisted LASIK. Donor corneas were assigned to six investigative groups: Group A, -3.00 D (diopters) SMILE; Group B, -8.00 D SMILE; Group C, -3.00 D LASIK; and Group D, -8.00 D LASIK. Additionally, two control groups were formed: Group E, SMILE and Group F, LASIK...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29408829/femtosecond-laser-assisted-small-incision-endokeratophakia-using-a-xenogeneic-lenticule-in-rhesus-monkeys
#18
Miao He, He Jin, Hong He, Hui Ding, Wei Wang, Liangping Liu, Chi Zhang, Xingwu Zhong
PURPOSE: To evaluate the feasibility and safety of xenogeneic endokeratophakia in rhesus monkeys and to explore the effects of a concave lenticule on refractive power. METHODS: Three adult New Zealand white rabbits and 6 healthy rhesus monkeys were used. The xenogenic concave grafts were created from the rabbits using a modified small incision lenticule extraction technique; after being cryopreserved in glycerol for 1 week, the grafts were implanted into the monkey recipient corneas...
March 2018: Cornea
https://www.readbyqxmd.com/read/29394173/-meniscus-sign-to-identify-the-lenticule-edge-in-small-incision-lenticule-extraction
#19
Jeewan S Titiyal, Manpreet Kaur, Anand S Brar, Ruchita Falera
PURPOSE: To describe our technique of lenticule edge identification in small-incision lenticule extraction using the "meniscus sign" to prevent lenticule misdissection. METHODS: Femtosecond laser application for small-incision lenticule extraction was performed. A "double ring" was visible, signifying the edge of the cap cut (outer ring) and lenticule cut (inner ring). The anterior and posterior lamellar planes were delineated in 2 different directions...
June 2018: Cornea
https://www.readbyqxmd.com/read/29283117/refractive-lenticule-extraction-small-incision-lenticule-extraction-a-new-refractive-surgery-paradigm
#20
REVIEW
Sri Ganesh, Sheetal Brar, Raghavender Reddy Arra
Small incision lenticule extraction (SMILE), a variant of refractive lenticule extraction technology is becoming increasingly popular, as a flapless and minimally invasive form of laser vision correction (LVC) for the treatment of myopia and myopic astigmatism. This review aims at summarizing the principles, surgical technique, and clinical outcomes in terms of visual and refractive results, safety, efficacy, postoperative dry eye, aberrations, and biomechanics of SMILE and its comparison with other conventional techniques of LVC, such as laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK)...
January 2018: Indian Journal of Ophthalmology
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