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Ophthalmology 2020 Jun 29. Epub 2020 Jun 29.

Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX. Electronic address:

Intraocular lens (IOL) power calculations are less accurate in eyes that have undergone corneal refractive surgery. A wide range of methods have been proposed. We reviewed the methods and outcomes of IOL power calculations in eyes with previous laser in-situ keratomileusis (LASIK), excimer laser photorefractive keratectomy (PRK), or radial keratotomy (RK). Read More

Sci Rep 2020 Jun 30;10(1):10666. Epub 2020 Jun 30.

Department of Ophthalmology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Republic of Korea.

This retrospective study is to evaluate refractive and visual outcomes of topography-guided femtosecond laser-assisted in situ keratomileusis (TGL) for correcting corneal high-order aberrations (HoA) after multifocal intraocular lens (mIOL) implantation. Twenty-eight eyes of 28 patients with both corrected distance visual acuity (CDVA) under 20/25 and subjective visual discomfort at 3 months after mIOL implantation were included in the study. TGL was performed to correct corneal HoA. Read More

Eur J Ophthalmol 2020 Jun 28:1120672120937658. Epub 2020 Jun 28.

Eye Clinic "Svjetlost," Sarajevo, Bosnia and Herzegovina.

Purpose: To determine if the manifest sphero-cylindrical residual refractive error, at various time points over a 12-month postop period after laser in situ keratomileusis (LASIK) was associated with patient age at time of surgery.

Methods: Patients with moderate to high hyperopia (3.00-7. Read More

BMC Ophthalmol 2020 Jun 17;20(1):234. Epub 2020 Jun 17.

LASIK MD, 1250 Rene-Levesque Blvd W, MD Level, Montreal, QC, H3B 4W8, Canada.

Background: To evaluate laser-assisted in situ keratomileusis (LASIK) outcomes, subjective quality of vision (QoV) and patient satisfaction in eyes with very high myopia (VHM) above - 10.00 diopters (D).

Methods: Consecutive myopic and myopic-astigmatism eyes with spherical equivalent (SEQ) ranging between - 10. Read More

Curr Opin Ophthalmol 2020 Jul;31(4):241-246

Department of Ophthalmology and Visual Sciences, Montefiore Medical Center, Albert Einstein College of Medicine, New York City, New York, USA.

Purpose Of Review: Refractive surgery is one of the most popular elective procedures performed in the world. Given that dry eye is a common complaint following keratorefractive surgery, evaluation, and treatment of periocular conditions that further predispose the patient to dry eye symptoms is an important part of the presurgical assessment. Periocular conditions and surgeries can also affect the ocular surface and keratometry, and should be addressed. Read More

Clin Ophthalmol 2020 24;14:1091-1100. Epub 2020 Apr 24.

TLC Laser Centers, Greensboro, NC, USA.

Purpose: To identify the laser programming strategy that will achieve optimal refractive outcomes of LASIK with a topography-guided laser for eyes with a disparity between cylinder measured by manifest refraction and cylinder measured by topography.

Setting: Six surgeons at 5 clinical sites in the USA.

Design: Retrospective data review. Read More

Optom Vis Sci 2020 May;97(5):360-369

The Cornea Institute, L V Prasad Eye Institute, Hyderabad, Telangana, India.

Significance: Laser refractive surgery procedures are efficacious at correcting myopia, but they result in long-term deterioration of optical quality that affects monocular and binocular visual performance. The study shows that the optical quality of the two eyes needs to be similar to optimize binocular visual performance after surgery.

Purpose: This study aimed to systematically analyze longitudinal changes in optical quality, high- and low-contrast logMAR acuity and random-dot stereoacuity before and after three refractive surgery procedures for correcting myopia. Read More

BMC Ophthalmol 2020 May 14;20(1):192. Epub 2020 May 14.

Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Republic of Korea.

Background: To compare the outcomes of myopia and myopic astigmatism corrected with topography-modified refraction laser in situ keratomileusis (TMR-LASIK), wavefront-optimized (WFO) LASIK, and topography-guided (TG) LASIK with a correction target based on the manifest refraction (manifest TG-LASIK).

Methods: This observational, retrospective cohort study included patients who underwent LASIK using the WaveLight® EX500 excimer laser to correct myopia and myopic astigmatism between August 2016 and July 2017. Patients who underwent TMR-LASIK (85 patients), WFO-LASIK (70 patients), or manifest TG-LASIK (40 patients) were enrolled, and only one eye from each patient was analyzed. Read More

Clin Ophthalmol 2020 31;14:977-984. Epub 2020 Mar 31.

Department of Ophthalmology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt.

Background: The purpose of this retrospective study was to evaluate cylinder axis agreement between manifest refraction (MR), cycloplegic refraction (CR), Allegro Oculyzer ІІ and Allegro Topolyzer-Vario.

Methods: We included 82 patients (32 males and 50 females, 28.1 ± 8. Read More

J Cataract Refract Surg 2020 04;46(4):534-539

From the Department of Ophthalmology, Baylor College of Medicine, Cullen Eye Institute (Cao, Wang, Koch), Houston, Texas, USA; and Aier School of Ophthalmology, Central South University (Cao), Changsha, Hunan Province.

Purpose: To evaluate the outcome of toric intraocular lens (IOL) implantation in eyes with previous laser in situ keratomileusis/photorefractive keratectomy (LASIK/PRK).

Setting: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA.

Design: Retrospective case series. Read More

Cochrane Database Syst Rev 2020 04 7;4:CD012946. Epub 2020 Apr 7.

Universidad Anáhuac México, Campus Norte, Centro de Investigación en Ciencias de la Salud (CICSA), Facultad de Ciencias de la Salud, Av. Universidad Anáhuac 46, Huixquilucan, Mexico, Mexico, 52786.

Background: Laser-assisted in-situ keratomileusis (LASIK) is a surgical procedure that corrects refractive errors. This technique creates a flap of the outermost parts of the cornea (epithelium, bowman layer, and anterior stroma) to expose the middle part of the cornea (stromal bed) and reshape it with excimer laser using photoablation. The flaps can be created by a mechanical microkeratome or a femtosecond laser. Read More

Acta Inform Med 2020 Mar;28(1):24-28

NHS National Services Scotland, Edinburgh, United Kingdom.

Introduction: Refractive surgery procedures, transepithelial photorefractive keratectomy (T-PRK) and femtosecond laser in situ keratomileusis (Fs-LASIK) are regarded as safe and efficacious methods for correcting myopia and myopic astigmatism. These two methods do not have much differences in results when treating spherical myopia, while some differences does exist in treatment of myopic astigmatism. Vector analysis presents powerful tool to show the real differences between these two methods regarding higher order ocular aberrations and central corneal thickness of treated eyes. Read More

J Refract Surg 2020 Mar;36(3):169-174

Purpose: To assess the impact of measurement error on cylinder treatment planning in corneal refractive surgery and to compare the reliability of two indices of cylinder change: the Correction Index, based on the surgically induced astigmatism, and the Flattening Index, based on the flattening effect.

Methods: Preoperative refractions and surgical outcomes were evaluated using a Monte Carlo simulation. Cylinder change was calculated using vector analysis. Read More

J Cataract Refract Surg 2020 03;46(3):403-409

From the University of Health Sciences Beyoğlu Eye Training and Research Hospital (Tülü Aygün, Ağca, Yıldırım, Kepez Yıldız, Sucu, Kandemir Beşek), Istanbul, Department of Ophthalmology (Çankaya), Yalova State Hospital, Yalova, and Department of Ophthalmology (Demirok), Istanbul Medeniyet University, Istanbul, Turkey.

Purpose: To compare the long-term refractive and visual outcomes and the corneal higher-order aberrations of contralateral eyes of patients who received small-incision lenticule extraction (SMILE) in one eye and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) in the other eye.

Setting: Refractive Surgery Clinic of the University of Health Sciences Beyoğlu Eye Training and Research Hospital, Istanbul, Turkey.

Design: Retrospective case series. Read More

J Cataract Refract Surg 2020 03;46(3):419-427

From the Department of Ophthalmology, The Eye and ENT Hospital of Fudan University China (Han, Shang, Xueyi Zhou, Xu, Xingtao Zhou), Shanghai, NHC Key Laboratory of Myopia, Fudan University, Chinese Academy of Medical Sciences (Han, Shang, Xueyi Zhou, Xu, Xingtao Zhou), Beijing, Research Center of Ophthalmology and Optometry (Han, Xu, Xingtao Zhou), Shanghai, China; Cornea and Refractive Service, Singapore National Eye Centre (Ang); and Ophthalmology and Visual Sciences, DUKE-National University of Singapore (Ang), Singapore.

Purpose: To compare the long-term refractive effects of small-incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) on the correction of high myopia and astigmatism.

Setting: The Eye and ENT Hospital of Fudan University, Shanghai, China.

Design: Retrospective case series. Read More

J Cataract Refract Surg 2020 02;46(2):276-286

From the Kensington Eye Institute (Singal, Ong Tone, Stein, Bujak, Chan, Chew, El-Defrawy, Jin, Kranemann, Rabinovitch, Rootman, Slomovic, Hatch), Department of Ophthalmology and Vision Sciences, University of Toronto (Singal, Ong Tone, Stein, Bujak, Chan, Chew, El-Defrawy, Jin, Kranemann, Rabinovitch, Rootman, Slomovic, Hatch), Kensington Crosslinking Working Group (Singal, Ong Tone, Stein, Bujak, Chan, Chew, El-Defrawy, Jin, Kranemann, Rabinovitch, Rootman, Slomovic, Hatch), and St. Michael's Hospital (Cohen, Dai), Toronto, Ontario, Canada.

Purpose: To compare accelerated corneal crosslinking (CXL) alone, CXL with simultaneous intrastromal corneal ring segments (CXL-ICRS), and CXL with simultaneous topography-guided photorefractive keratectomy (CXL-TG-PRK) in progressive keratoconus, pellucid marginal degeneration (PMD), or laser in situ keratomileusis (LASIK)-induced ectasia.

Setting: The Kensington Eye Institute and Bochner Eye Institute, Toronto, Canada.

Design: Prospective nonrandomized interventional study. Read More

Clin Ophthalmol 2020 21;14:509-516. Epub 2020 Feb 21.

Cornea and Refractive Surgery Department, Research Institute of Ophthalmology, Giza, Egypt.

Background: Corneal refractive surgery is widely used worldwide. Myopia is the most common reason for laser-assisted corneal refractive surgery (LASIK) and one of the risk factors for glaucoma. Intraocular pressure (IOP) measurement becomes variable postoperatively as the results are affected by the decrease in corneal thickness and biomechanics. Read More

Zhonghua Yan Ke Za Zhi 2020 Feb;56(2):118-125

Ophthalmic Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab., Beijing, China 100730.

To investigate mesopic contrast sensitivity (CS) and high-order aberrations after femtosecond laser-assisted LASIK (FS-LASIK), wavefront-guided femtosecond LASIK (WF-LASIK) and small incision lenticule extraction (SMILE) for myopia and astigmatism. In this case-control study, 212 eyes of 108 patients with myopia and astigmatism from September 2014 to September 2016 were treated by refractive surgery. There were 34 males (66 eyes) and 74 females (146 = eyes), aged 27 (24, 32) years. Read More

Zhonghua Yan Ke Za Zhi 2020 Feb;56(2):93-102

Department of Ophthalmology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China.

To investigate the corneal epithelial thickness changes between small incision lenticule extraction (SMILE) and femtosecond laser-assisted LASIK (FS-LASIK), study the related factors and analyze the relationship between the changes in corneal epithelial thickness and corneal aberration. This case control study included 59 patients (118 eyes), 27 males and 32 females, aged 25.64±5. Read More

J Cataract Refract Surg 2020 Jan 27. Epub 2020 Jan 27.

Department of Ophthalmology, The Eye and ENT Hospital of Fudan University, Shanghai, China.

Purpose: To compare the long-term refractive effects of small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for correction of high myopia and astigmatism.

Setting: The Eye and ENT Hospital of Fudan University DESIGN:: Retrospective case series.

Methods: This study included 121 patients (121 eyes: 75 in SMILE group and 46 in FS-LASIK group) who underwent SMILE or FS-LASIK for high myopia. Read More

J Refract Surg 2020 Feb;36(2):89-96

Purpose: To evaluate visual outcomes 6 years after hybrid bi-aspheric multifocal central laser in situ keratomileusis for presbyopia correction (PresbyLASIK) treatments.

Methods: Thirty-eight eyes of 19 patients consecutively treated with central PresbyLASIK were assessed. The mean age of the patients was 51 ± 3 years at the time of treatment with a mean spherical equivalent refraction of -0. Read More

Int Ophthalmol 2020 May 25;40(5):1291-1298. Epub 2020 Jan 25.

Ophthalmology Department, Oftalmocentro, Av. Nilo Peçanha, 724/401, Porto Alegre, RS, Brazil.

Purpose: The aim of this study is to report our results of toric intraocular lens (IOL) implantation in patients with asymmetric astigmatism, its efficacy and safety in reducing the refractive cylinder.

Methods: This is a retrospective cohort study. Patients with asymmetric astigmatism and non-progressive corneal ectasia, unable to fit hard contact lenses, with poor-corrected visual acuity or unsatisfactory spectacles-corrected visual acuity, underwent cataract surgery with toric IOL implantation. Read More

Am J Ophthalmol 2020 05 13;213:76-87. Epub 2020 Jan 13.

Kensington Eye Institute, Toronto, Ontario, Canada; Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada.

Purpose: We examined the efficacy and preoperative characteristics that affect outcomes of accelerated (9 mW/cm for 10 minutes) corneal cross-linking (CXL).

Design: Prospective single-center observational cohort study.

Methods: We enrolled 612 eyes of 391 subjects with progressive keratoconus (n = 589), pellucid marginal degeneration (n = 11), and laser in situ keratomileusis-induced ectasia (n = 12). Read More

Acta Ophthalmol 2020 Mar 7;98(2):e161-e172. Epub 2020 Jan 7.

Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China.

Purpose: To compare the efficacy and visual outcomes after femtosecond laser small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) in correcting high myopia.

Methods: This prospective, randomized study included patients who underwent SMILE or FS-LASIK for the correction of high myopia [the sum of spherical and cylindrical error from -10.00 to -14. Read More

J Refract Surg 2019 12;35(12):815

J Refract Surg 2019 Dec;35(12):754-762

Purpose: To investigate the contribution of anterior corneal higher-order aberration ablation depth (HOA-AD) to topography-guided outcomes.

Methods: This was a retrospective comparative analysis of 9,722 consecutive eyes undergoing laser in situ keratomileusis (LASIK) treated on the clinically measured refractive cylinder with Contoura software (Alcon Laboratories, Inc., Fort Worth, TX). Read More

Case Rep Ophthalmol 2019 Sep-Dec;10(3):379-383. Epub 2019 Nov 13.

Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital, Fondation Asile des aveugles, Lausanne, Switzerland.

We report the application of an elliptical femtosecond laser-assisted in situ keratomileusis (LASIK) flap for the management of post-arcuate keratotomy (AK) residual astigmatism. An 82-year-old male was referred to our institute for evaluation of his right eye due to residual regular astigmatism 1 year after AK. On examination, uncorrected distance visual acuity (UDVA) was 20/50 and corrected distance visual acuity was 20/25 (+3. Read More

J Ophthalmol 2019 6;2019:5907645. Epub 2019 Nov 6.

Hatay State Hospital, Antakya, Hatay, Turkey.

Aim: To compare the postoperative one-year outcomes of asphericity (Q) and high order aberration (HOA) values of 9.0 and 9.2 mm diameter flap groups in hypermetropia and hypermetropic astigmatism subjects who underwent femtosecond laser in-situ keratomileusis (LASIK). Read More

Acta Inform Med 2019 Sep;27(3):177-180

Eye Clinic Svjetlost Sarajevo, Sarajevo, Bosnia and Herzegovina.

Introduction: The WaveLight Allegretto Eye-Q is a flying-spot excimer laser, with a pulse repetition rate of 400Hz, with two galvanometric scanners for positioning laser pulses. The system has an infrared high speed camera operating at 400Hz to track the patient's eye movements that either compensates for changes in eye position or interrupts the treatment if the eye moves outside a preset predetermined range.

Aim: The purpose of this study was to investigate WaveLight Allegretto Eye-Q 400Hz laser delivery platform aimed to correct astigmatism by subjecting the pre and postoperative astigmatic values to vector analysis. Read More

J Refract Surg 2019 Nov;35(11):699-706

Purpose: To compare U.S. Food and Drug Administration (FDA)-reported visual and refractive outcomes following surgical correction of myopia and myopic astigmatism using the Visian Toric Implantable Collamer Lens (STAAR Surgical, Monrovia, CA) (Toric ICL), small incision lenticule extraction (SMILE), and topography-guided laser in situ keratomileusis (TG-LASIK). Read More

J Refract Surg 2019 Nov;35(11):690-698

Purpose: To review clinical outcomes of the U.S. Food and Drug Administration premarket approval (PMA) studies of the three recently approved refractive surgery platforms for the correction of spherocylindrical myopia. Read More

Ophthalmologe 2019 Dec;116(12):1221-1230

Klinik für Augenheilkunde und Hochschulambulanz, Universitätsklinikum des Saarlandes UKS, Kirrbergerstr. 100, 66421, Homburg/Saar, Deutschland.

Background And Objective: Since 1986 Naumann and Lang have developed and optimized the technique of nonmechanical corneal trephination using a 193-nm excimer laser along metal masks for penetrating keratoplasty (PKP). The aim of this paper is to demonstrate the technique of excimer laser-assisted keratoplasty.

Methods: After beginning with elliptical transplants a major improvement resulted in the introduction of eight "orientation cogs/notches" at the edges of round metal masks for reduction of "horizontal torsion". Read More

Am J Ophthalmol 2020 03 1;211:42-55. Epub 2019 Nov 1.

Department of Ophthalmology, Goethe-University, Frankfurt am Main, Germany.

Purpose: To evaluate the safety and efficacy of femtosecond (fs) laser-assisted in situ keratomileusis (LASIK) combined with accelerated corneal cross-linking (LASIK Xtra) compared to conventional fs-LASIK (convLASIK) in high myopic patients.

Design: Prospective, randomized, fellow-eye controlled clinical trial.

Methods: Setting: Department of Ophthalmology, Goethe University, Frankfurt/Germany. Read More

J Optom 2020 Jan - Mar;13(1):59-68. Epub 2019 Oct 25.

NHS Scotland, Edinburgh, United Kingdom.

Purpose: To determine the significance of changes and and inter-relationships between three markers of binocular function (aniseikonia, distance and near stereoacuity) following unremarkable LASIK at 3 and 6 months postoperatively.

Methods: All patients underwent LASIK using the Schwind Amaris 750S and the flaps were created using Intralase 150 kHz. Patients were I, monocular myopes II, binocular myopes III, binocular hyperopes IV, binocular astigmats V, anisometropes and VI, matched age and gender control (n = 20 in each group except III where n = 18). Read More

Ophthalmology 2020 Jun 12;127(6):724-730. Epub 2019 Sep 12.

Cornea and Refractive Service, Singapore National Eye Centre, Singapore, Republic of Singapore; Singapore Eye Research Institute, Singapore, Republic of Singapore; Department of Ophthalmology and Visual Science, Duke-NUS Graduate Medical School, Singapore, Republic of Singapore.

Purpose: To compare femtosecond LASIK with small-incision lenticule extraction (SMILE) for the treatment of myopia and myopic astigmatism.

Design: Prospective, randomized, paired-eye, single-masked clinical trial.

Participants: Consecutive eligible patients were randomized to undergo SMILE and LASIK in either eye at a single tertiary referral eye center. Read More

Med Hypothesis Discov Innov Ophthalmol 2019 ;8(3):241-249

HDR Research Center, Hoopes Vision, Draper, UT, USA.

The aim of this study was to compare the diameter, accuracy, variability, and centration with respect to the limbus of corneal flaps created by two femtosecond lasers, the VisuMax, and Wavelight FS200, for laser in situ keratomileusis (LASIK) and how these flaps affect visual outcomes. This is a retrospective chart review of flap morphology created during LASIK Surgery. Overall, 168 eyes underwent flap creation using the WaveLight FS200 laser, and on 189 eyes, the VisuMax laser was used. Read More

J Ophthalmol 2019 29;2019:8520183. Epub 2019 Aug 29.

Gavin Herbert Eye Institute, University of California Irvine School of Medicine, Irvine, CA 92697, USA.

Purpose: To evaluate the safety and effectiveness of femtosecond laser-assisted in situ keratomileusis (LASIK) in the treatment of residual myopia and astigmatism following femtosecond laser-enabled keratoplasty (FLEK).

Design: Retrospective case review.

Methods: Chart review of all patients with prior FLEK who subsequently underwent femto-LASIK surgery after full suture removal was performed at the Gavin Herbert Eye Institute at the University of California, Irvine. Read More

Cesk Slov Oftalmol 2019 ;75(2):65-71

Aim: We analysed one-year refractive results and the incidence of complications in patients with correction of low-to-high myopia or myopic astigmatism by femtosecond laser in situ keratomileusis (FS-LASIK) using femtosecond laser LenSx® (Alcon, Fort Worth, Texas, USA) a excimer laser Excimer Amaris 500 (Schwind eye-tech-solutions GmbH and Co KG, Kleinostheim, Germany).

Methods: To the retrospective study were included 171 eyes of 87 patients (38 men, 49 women) who underwent correction of myopia and myopic astigmatism by FS-LASIK in the outpatient Department of Ophthalmology, University Hospital in Hradec Králové between 2013-2017. We assessed uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA), subjective refraction, central corneal thickness (CCT) in the thinnest point, patients satisfaction and the incidence of complications in the one-year follow-up period. Read More

Am J Ophthalmol 2020 01 14;209:45-54. Epub 2019 Sep 14.

Care-Vision Laser Centers, Tel-Aviv, Israel; Department of Ophthalmology, Barzilai Medical Center, Ashkelon, and the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheba, Israel.

Purpose: To characterize age- and sex-related changes in corneal refractive parameters in myopic and hyperopic patients undergoing refractive surgery.

Design: A retrospective cross-sectional study.

Methods: Analysis of demographic and refractive parameters of myopic and hyperopic patients who underwent laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) between January 2000 and December 2014 at the Care-Vision Laser Centers, Tel-Aviv, Israel. Read More

J Refract Surg 2019 Sep;35(9):575-582

Purpose: To compare clinical outcomes between topography-guided customized ablation treatment (TCAT) and wavefront-optimized (WFO) laser in situ keratomileusis (LASIK) in fellow eyes of myopic patients.

Methods: This prospective randomized contralateral study included 432 eyes of 216 myopic patients who underwent LASIK. TCAT was randomly performed in one eye (TCAT group) and WFO LASIK in the fellow eye (WFO group). Read More

Asia Pac J Ophthalmol (Phila) 2019 Sep-Oct;8(5):412-416

Tianjin Eye Hospital, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin, China.

Small incision lenticule extraction (SMILE) is a novel 1-step refractive procedure with femtosecond laser for the correction of myopia and myopic astigmatism. Although it has shown good clinical results in efficacy, safety, predictability, and stability, there are still some concerns. In this study, we review the published clinical outcomes of high myopia correction and exploration in hyperopia correction. Read More

Asia Pac J Ophthalmol (Phila) 2019 Sep-Oct;8(5):391-396

Department of Ophthalmology, Hong Kong Sanatorium & Hospital, Hong Kong, China.

Small incision lenticule extraction (SMILE) was introduced in the recent decade for the treatment of myopia and myopic astigmatism. This flap-free technique has a high efficacy and safety profile and also carries potential advantages over laser in situ keratomileusis such as a better corneal biomechanical stability, reduction in dry eyes rate, and the avoidance of flap complications. However, there have been concerns regarding the precision of astigmatism correction that undercorrection has been reported to be apparent. Read More

BMC Ophthalmol 2019 Aug 8;19(1):176. Epub 2019 Aug 8.

Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Key NHC Key Laboratory of Myopia; Laboratory of Myopia, Chinese Academy of Medical Sciences, 83 FenYang Road, Shanghai, 200031, China.

Background: This report describes a case in which hyperopic femtosecond laser-assisted in situ keratomileusis (FS-LASIK) was performed following small incision lenticule extraction (SMILE) lenticule in situ implantation.

Case Presentation: The hyperopic left eye of a 46-year-old patient with refraction of + 7.75 diopters sphere (DS)/- 1. Read More

J Refract Surg 2019 08;35(8):544

J Refract Surg 2019 Aug;35(8):525-533

Purpose: To evaluate the outcomes of transepithelial, topography-guided, epithelial mapping-assisted ablation in the treatment of regression after myopic refractive surgery.

Methods: A retrospective consecutive case series of 70 eyes of 52 patients with regression after previous corneal refractive surgery for treatment of myopic and compound myopic astigmatism underwent re-treatment using transepithelial topography-guided and epithelial mapping-assisted custom ablation with a wide and smooth transition zone design. The ablation profile was based on data from corneal topography, whereas the epithelial ablation depth was decided by corneal epithelial mapping obtained by optical coherence tomography. Read More

Klin Monbl Augenheilkd 2019 Oct 30;236(10):1201-1207. Epub 2019 Jul 30.

Ophthalmology, International Vision Correction Research Centre Network (IVCRC.net), University of Heidelberg.

Aim: Our aim was to retrospectively compare ReLEx Smile to femtosecondlaser-assisted LASIK (FsLASIK, femto-LASIK) in terms of safety, efficacy, stability as well as intraoperative complications. Comparable studies only show the results over the course of 3 years, making our data the first to examine longer term results.

Materials/methods: To accomplish this, we compared 404 eyes after FsLASIK (Mel 80, Carl Zeiss Meditec) and 1192 eyes after ReLEx SMILE (VisuMax, Carl Zeiss Meditec). Read More

Eur J Ophthalmol 2019 Jul 29:1120672119865688. Epub 2019 Jul 29.

Muğla Sıtkı Koçman Üniversitesi, Muğla, Turkey.

Purpose: To evaluate the postoperative high-order aberration differences of femto-LASIK surgery in 6.5 and 7 mm optic zones.

Patients And Methods: We retrospectively reviewed 80 eyes of 40 patients with myopia or myopia with astigmatism who underwent femtosecond LASIK surgery. Read More

Ophthalmol Ther 2019 Sep 19;8(3):373-386. Epub 2019 Jul 19.

Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, USA.

Laser-assisted in situ keratomileusis (LASIK) is the most commonly performed laser refractive surgical technique worldwide for the treatment of myopia and myopic astigmatism. In recent years, small incision lenticule extraction (SMILE) has emerged as a promising alternative to LASIK, requiring only a single femtosecond laser to create an intrastromal lenticule, which is then removed via a small incision. The technique obviates the need for a corneal flap. Read More