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small incision lenticule extraction

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https://www.readbyqxmd.com/read/27916313/influence-of-the-flap-on-outcomes-in-corneal-refractive-surgery-with-femtosecond-laser-smile-vs-flex
#1
J L Alió, M El Bahrawy, A Angelov, D Ortiz, P Yébana
OBJECTIVE: To investigate the influence of creating a flap on the postoperative optical quality of the cornea in terms of predicted corneal curvature and Seidel aberrations after 2 modalities of femtosecond assisted corneal lenticule extraction laser for the correction of myopia and myopic astigmatism: The flapless procedure small incision lenticular extraction (SMILE) and the flap-based femtosecond lenticular extraction (FLEx). METHODS: The study is a prospective consecutive non-randomised comparative interventional case series including 64 eyes with myopic or myopic astigmatism refractive errors...
December 1, 2016: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/27911101/in-vivo-and-ex-vivo-evaluation-of-inflammation-and-apoptosis-induced-after-smile-procedures-for-different-refractive-error-range
#2
Leonardo Mastropasqua, Roberta Calienno, Claudia Curcio, Rodolfo Mastropasqua, Mario Nubile, Niccolò Salgari, Manuela Lanzini
PURPOSE: To detect corneal inflammation and apoptosis induced after small incision lenticule extraction (SMILE) at different refractive corrections for moderate to high values of myopia. METHODS: Fifty patients (50 eyes) suffering from medium to high myopia (spherical equivalent refraction from -3.75 to -10.00 diopters (D) with refractive astigmatism under -0.75 D) underwent SMILE in order to correct myopic error. In vivo evaluation was done by corneal confocal microscopy (IVCM) and ex vivo by immunohistochemistry...
December 2, 2016: Current Eye Research
https://www.readbyqxmd.com/read/27898448/laser-vision-correction-in-treating-myopia
#3
Germano Leal Ehlke, Ronald R Krueger
Myopia is a generally benign refractive error with an increasing prevalence worldwide. It can be corrected temporarily with glasses and contact lenses and permanently with laser vision correction. The 2 main procedures currently being performed for myopia correction are photorefractive keratectomy and laser-assisted in situ keratomileusis. Each technique has its advantages, but they appear to yield similar visual outcomes 1 year after surgery. Laser vision correction for myopia was considered a paradigm shift because healthy eyes could now undergo a surgical procedure to permanently and safely correct the error by altering the center of the cornea, which was previously off limits because of the potential for loss of transparency...
November 2016: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/27893524/visual-outcomes-after-smile-lasek-and-lasek-combined-with-corneal-collagen-cross-linking-for-high-myopic-correction
#4
Sangyoon Hyun, Seongjun Lee, Jae-Hyung Kim
PURPOSE: To compare the visual and refractive outcomes of small-incision lenticule extraction (SMILE), laser-assisted subepithelial keratomileusis (LASEK), and LASEK combined with corneal collagen cross-linking (LASEK-CXL) surgery for high-degree myopia. METHODS: Medical records of patients with spherical equivalent (SE) greater than -6.00 diopters (D) treated with SMILE, LASEK, and LASEK-CXL were reviewed. Uncorrected distance visual acuity (UCVA), SE, and corneal haze were followed up in the 3 groups for 6 months...
November 23, 2016: Cornea
https://www.readbyqxmd.com/read/27863469/changes-in-intraocular-pressure-values-measured-with-noncontact-tonometer-nct-ocular-response-analyzer-ora-and-corvis-scheimpflug-technology-tonometer-cst-in-the-early-phase-after-small-incision-lenticule-extraction-smile
#5
Yang Shen, Xiangjian Su, Xiu Liu, Huamao Miao, Xuejun Fang, Xingtao Zhou
BACKGROUND: Corneal biomechanical properties are always compromised after corneal refractive surgeries thus leading to underestimated intraocular pressure (IOP) that complicates the management of IOP. We investigated the changes in postoperative baseline of IOP values measured with noncontact tonometer (NCT), ocular response analyzer (ORA) and corvis scheimpflug technology (CST) in the early phase after small incision lenticule extraction (SMILE). METHODS: Twenty-two eyes (-6...
November 18, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27846649/-impact-of-different-percent-tissue-altered-values-on-visual-outcome-after-refractive-small-incision-lenticule-extraction-relex-smile
#6
D R H Breyer, P Hagen, H Kaymak, K Klabe, G U Auffarth, F T A Kretz
Purpose: To compare the visual outcomes after ReLEx SMILE treatment of eyes with low and high PTA values (PTA: percent tissue altered) within a follow-up period of up to 3 years and to assess whether a high PTA value might contribute to the development of keratectasia, as is the case for LASIK. Methods: This retrospective analysis comprises results from 313 eyes (189 patients) with a PTA value of less than 40 % and of 373 eyes (213 patients) with a PTA value of at least 40 %. Preoperatively and up to 3 years after SMILE surgery, refraction values, monocular corrected (CDVA) and uncorrected distant visual acuity (UDVA) and wavefront data were evaluated...
November 15, 2016: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/27830201/corneal-biomechanics-after-small-incision-lenticule-extraction-versus-q-value-guided-femtosecond-laser-assisted-in-situ-keratomileusis
#7
Jun Zhang, Li Zheng, Xia Zhao, Yang Xu, Shu Chen
PURPOSE: The aim of this study was to compare the changes in corneal biomechanical properties following small-incision lenticule extraction (SMILE) versus Q-value-guided femtosecond laser-assisted in situ keratomileusis (Q-FS-LASIK). METHODS: In this prospective comparative study, patients with a sphere plus cylinder measurement of less than -10.00 D and cylinder measurement of less than -5.00 D were included in the study. A total of 160 patients (160 eyes) with myopia and myopic astigmatism were divided into the two groups, with 80 patients (80 eyes) allocated to SMILE and 80 patients (80 eyes) allocated to Q-FS-LASIK...
December 2016: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/27824382/shifting-ectasia-interface-fluid-collection-after-small-incision-lenticule-extraction-smile
#8
Aashish K Bansal, Somasheila I Murthy, Syed M Maaz, Mahipal S Sachdev
PURPOSE: To report the first case and a new diagnostic sign of interface fluid collection following small incision lenticule extraction (SMILE). METHODS: Case report. RESULTS: A 20-year-old man underwent SMILE for correction of compound myopic astigmatism. Postoperative follow-up examination included vision testing, slit-lamp examination, intraocular pressure measurement, corneal topography, and optical coherence tomography (OCT). The patient presented postoperatively with decreased vision in his right eye...
November 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27818792/smile-and-wavefront-guided-lasik-out-compete-other-refractive-surgeries-in-ameliorating-the-induction-of-high-order-aberrations-in-anterior-corneal-surface
#9
Min-Jie Ye, Cai-Yuan Liu, Rong-Feng Liao, Zheng-Yu Gu, Bing-Ying Zhao, Yi Liao
Purpose. To compare the change of anterior corneal higher-order aberrations (HOAs) after laser in situ keratomileusis (LASIK), wavefront-guided LASIK with iris registration (WF-LASIK), femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK), and small incision lenticule extraction (SMILE). Methods. In a prospective study, 82 eyes underwent LASIK, 119 eyes underwent WF-LASIK, 88 eyes underwent FS-LASIK, and 170 eyes underwent SMILE surgery. HOAs were measured with Pentacam device preoperatively and 6 months after surgery...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27800259/comparison-of-changes-in-corneal-biomechanical-properties-after-photorefractive-keratectomy-and-small-incision-lenticule-extraction
#10
Yusuf Yıldırım, Onur Ölçücü, Abdurrahman Başcı, Alper Ağca, Engin Bilge Özgürhan, Cengiz Alagöz, Ali Demircan, Ahmet Demirok
OBJECTIVES: To compare the postoperative biomechanical properties of the cornea after photorefractive keratectomy (PRK) and small incision lenticule extraction (SMILE) in eyes with low and moderate myopia. MATERIALS AND METHODS: We retrospectively examined 42 eyes of 23 patients undergoing PRK and 42 eyes of 22 patients undergoing SMILE for the correction of low and moderate myopia. Corneal hysteresis (CH) and corneal resistance factor (CRF) were measured with an Ocular Response Analyzer before and 6 months after surgery...
April 2016: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/27777827/quantitative-evaluation-of-microdistortions-in-bowman-s-layer-and-corneal-deformation-after-small-incision-lenticule-extraction
#11
Rushad Shroff, Mathew Francis, Natasha Pahuja, Leio Veeboy, Rohit Shetty, Abhijit Sinha Roy
PURPOSE: To quantitatively evaluate microdistortions in Bowman's layer and change in corneal stiffness after small incision lenticule extraction (SMILE). METHODS: This was a prospective, longitudinal, and interventional study. Thirty eyes of 30 patients were screened preoperatively and underwent SMILE for treatment of myopia with astigmatism. Visual acuity, refraction, optical coherence tomography (OCT; Bioptigen, Inc., Morrisville, NC) imaging of the layer and air-puff applanation (Corvis-ST, OCULUS Optikgeräte Gmbh, Germany) was performed before and after surgery (1 day, 1 week, and 1 month)...
October 2016: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/27775085/effect-of-location-of-opening-incision-on-astigmatic-correction-after-small-incision-lenticule-extraction
#12
Tommy C Y Chan, Alex Lk Ng, George P M Cheng, Zheng Wang, Victor C P Woo, Vishal Jhanji
We compared the visual and refractive outcomes between 2 different incisional sites in small incision lenticule extraction (SMILE) for low myopic astigmatism. This was a contralateral eye study. Consecutive cases that underwent bilateral SMILE surgery were included. Procedures for both eyes were identical apart from the location of opening incision. The incision was set on the temporal side for the right eye (Group 1), while a superior incision was set for the left eye (Group 2). Twenty-nine patients with a mean age of 35...
October 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27757010/refractive-lenticule-extraction-relex-through-a-small-incision-smile-for-correction-of-myopia-and-myopic-astigmatism-current-perspectives
#13
Alper Ağca, Ahmet Demirok, Yusuf Yıldırım, Ali Demircan, Dilek Yaşa, Ceren Yeşilkaya, İrfan Perente, Muhittin Taşkapılı
Small-incision lenticule extraction (SMILE) is an alternative to laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) for the correction of myopia and myopic astigmatism. SMILE can be performed for the treatment of myopia ≤-12 D and astigmatism ≤5 D. The technology is currently only available in the VisuMax femtosecond laser platform. It offers several advantages over LASIK and PRK; however, hyperopia treatment, topography-guided treatment, and cyclotorsion control are not available in the current platform...
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/27722761/a-pilot-study-of-smile-for-hyperopia-corneal-morphology-and-surface-characteristics-of-concave-lenticules-in-human-donor-eyes
#15
Jing Zhao, Huamao Miao, Tian Han, Yang Shen, Yu Zhao, Ling Sun, Xingtao Zhou
PURPOSE: To evaluate the corneal morphology and surface characteristics of concave lenticules after small incision lenticule extraction (SMILE) for hyperopia. METHODS: SMILE procedures were performed on two human autopsy corneas in vitro to correct +4.00 diopters of hyperopia. Slit-lamp microscopy and anterior optical coherence tomography (OCT) were performed after lenticule creation and extraction. The extracted lenticules and modified corneas were sent for transmission electron microscopy imaging...
October 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27722756/impact-of-suction-loss-during-small-incision-lenticule-extraction-smile
#16
Manli Liu, Jianchao Wang, Wen Zhong, Danyang Wang, Yugui Zhou, Quan Liu
PURPOSE: To evaluate the clinical results of suction loss in eyes during small incision lenticule extraction (SMILE). METHODS: This prospective paired-eye case study enrolled 8,490 eyes of 4,296 patients, of which 35 eyes experienced suction loss during the SMILE procedure while being treated for myopia or myopic astigmatism. The eyes with suction loss were re-treated with SMILE, femtosecond laser-assisted LASIK (FS-LASIK), or pseudo SMILE, and the fellow eyes were treated with SMILE...
October 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27716112/accommodative-changes-after-smile-for-moderate-to-high-myopia-correction
#17
Ke Zheng, Tian Han, Xingtao Zhou
BACKGROUND: To investigate accommodative response and accommodative lag changes after femtosecond laser small incision lenticule extraction (SMILE) for moderate to high myopia correction. METHODS: A total of 32 eyes of 32 patients with no strabismus who underwent SMILE were enrolled in this prospective clinical study. The accommodative response was obtained viewing monocularly with spherical equivalent refractive error corrected, using an open-field autorefractor at different stimulus levels (2...
October 4, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27697260/quality-of-vision-symptoms-after-small-incision-lenticule-extraction-september-consultation-1
#18
Rudy Nuijts, An-Katrien de Brauwer
No abstract text is available yet for this article.
September 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27697241/white-ring-sign-for-uneventful-lenticule-separation-in-small-incision-lenticule-extraction
#19
Soosan Jacob, Ashiyana Nariani, Michele Figus, Amar Agarwal, Athiya Agarwal
: We describe the white ring sign, which differentiates the posterior and anterior lenticular planes in small-incision lenticule extraction. The sign identifies the plane of dissection by the anteroposterior relationship between the dissecting instrument and the circular white light reflected from the lenticular side cut. Differentiating the planes enables the surgeon to dissect the anterior plane before the posterior plane, which facilitates smooth lenticule extraction and prevents complications such as cap tears, partial lenticule dissection, and a torn lenticule...
September 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27651001/construction-of-a-corneal-stromal-equivalent-with-smile-derived-lenticules-and-fibrin-glue
#20
Houfa Yin, Peijin Qiu, Fang Wu, Wei Zhang, Wenqi Teng, Zhenwei Qin, Chao Li, Jiaojie Zhou, Zhi Fang, Qiaomei Tang, Qiuli Fu, Jian Ma, Yabo Yang
The scarcity of corneal tissue to treat deep corneal defects and corneal perforations remains a challenge. Currently, small incision lenticule extraction (SMILE)-derived lenticules appear to be a promising alternative for the treatment of these conditions. However, the thickness and toughness of a single piece of lenticule are limited. To overcome these limitations, we constructed a corneal stromal equivalent with SMILE-derived lenticules and fibrin glue. In vitro cell culture revealed that the corneal stromal equivalent could provide a suitable scaffold for the survival and proliferation of corneal epithelial cells, which formed a continuous pluristratified epithelium with the expression of characteristic markers...
2016: Scientific Reports
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