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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/29117416/accuracy-of-visual-estimation-of-lasik-flap-thickness
#2
Jason E Brenner, Ali Fadlallah, Kathryn M Hatch, Catherine Choi, Rony R Sayegh, Paul Kouyoumjian, Simon Wu, George T Frangieh, Samir A Melki
PURPOSE: To assess the accuracy of surgeons' visual estimation of LASIK flap thickness when created by a femtosecond laser by comparing it to ultrasound measurements. METHODS: Surgeons were asked to visually estimate the thickness of a femtosecond flap during the procedure. Total corneal thickness was measured by ultrasound pachymetry prior to the procedure and the stromal bed was similarly measured after flap lifting. The estimates from three experienced surgeons (cornea fellowship trained and more than 5 years in practice) were compared to those of three cornea fellows, with each surgeon evaluating 20 eyes (120 total)...
November 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29090044/temporal-and-spatial-flap-variability-in-laser-in-situ-keratomileusis-by-optical-coherence-tomography
#3
Yousif Farhan Dawood, Usama Al Hassany, Ammar F Issa
PURPOSE: To study changes in flap thickness made with two different microkeratome heads across different corneal locations using anterior segment optical coherence tomography (OCT). METHODS: In this prospective, non-randomized, consecutive case series, subjects who had their laser in-situ keratomileusis (LASIK) flaps made using 90 μm (MSU90) or 130 μm (MSU130) disposable M2 microkeratome heads were examined using OCT. The measurements were performed at three locations (central and 2...
October 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29063473/comparing-aspheric-ablation-profile-with-standard-corneal-ablation-for-correction-of-myopia-and-myopic-astigmatism-a-contralateral-eye-study
#4
Mohammad Ghoreishi, Afsaneh Naderi Beni, Zahra Naderi Beni, Alireza Zandi, Farzan Kianersi
The purpose of this study is to compare visual outcomes of myopic refractive surgery, using tissue saving (TS), a standard ablation profile by a Technolas 217z100, and aberration smart ablation (ASA), an aspheric algorithm by a MEL 80 excimer laser in two eyes of one patient. In this prospective interventional paired-eye controlled study, a total of 100 eyes of 50 participants with myopia with or without astigmatism underwent thin-flap Femto-LASIK, using a Femto LDV femtosecond laser (Ziemer Ophthalmic Systems AG, Port, Switzerland)...
December 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29062777/comparison-of-visual-performance-recovery-after-thin-flap-lasik-with-4-femtosecond-lasers
#5
Jing Zhang, Yue-Hua Zhou, Yan Zheng, Qian Liu
AIM: To compare the speed of visual recovery following myopic thin-flap LASIK with four femtosecond lasers. METHODS: Eighty-eight eyes of 46 patients who were consecutively scheduled for bilateral LASIK with the IntraLase FS60 (Group 1), Femto LDV Crystal Line (Group 2), Wavelight FS200 (Group 3) and VisuMax (Group 4) femtosecond lasers were enrolled in. Monocular uncorrected distance visual acuity (UDVA), best-corrected distant visual acuity (CDVA), refraction, contrast sensitivity and higher-order aberrations (HOAs) were evaluated at 1, 3d, 1wk and 1mo postoperatively...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29030795/a-virtual-model-to-assess-maximum-treatable-area-in-lasik-and-feasibility-of-a-temporal-hinge
#6
Ameya Rajas Deepak Ingawale, Jagadeesh K Reddy, K S Siddharthan, Neeraj Apoorva Shah, Shadab Rafat Khan
PURPOSE: To generate virtual models using different hinge locations and to investigate the advantages of a temporal hinge to a superior in LASIK. METHODS: The study design was cross sectional. An image processing software was used to construct virtual LASIK models of 56 slit lamp photos of eyes. For a given hinge location and width, the largest flap diameter and maximum treatable stromal bed area were calculated, comparing temporal hinge to superior. RESULTS: Temporal hinge allowed a greater flap diameter than superior and thus a greater treatment zone area for a given hinge width...
October 13, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28991621/central-island-formation-after-cataract-surgery-in-a-laser-in%C3%A2-situ-keratomileusis-eye-new-etiology
#7
Sylvain El-Khoury, Youssef Abdelmassih, George Cherfan, Johnny M Khoury
We report a case of central corneal steepness formation after cataract surgery in a post-laser in situ keratomileusis (LASIK) eye. A 51-year-old woman with traumatic cataract and a history of myopic LASIK surgery had uneventful phacoemulsification cataract surgery. Postoperatively, the corneal topography difference map showed a central island formation of 2.1 diopters (D) compared with the preoperative level, which correlated with a clinical myopic shift of 2.00 D from the targeted emmetropia. At 4 months, most of the central island had resolved spontaneously...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28991341/repair-of-irregularly-irregular-astigmatism-by-transepithelial-phototherapeutic-keratectomy
#8
Stefano Guglielmetti, Amy Kirton, Dan Z Reinstein, Glenn I Carp, Timothy J Archer
PURPOSE: To evaluate the outcome of transepithelial phototherapeutic keratectomy (PTK) in the management of irregularly irregular astigmatism. METHODS: This was a case series of two patients who underwent transepithelial PTK for irregularly irregular astigmatism. In the first case, the patient complained of diplopia due to corneal scarring caused by a metallic foreign body injury. The topography demonstrated irregularly irregular astigmatism with significant asymmetry in the inferotemporal to superonasal axis...
October 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28969525/rekeratoplasty-for-the-correction-of-refractive-status-due-to-post-lasik-donor-graft
#9
Ayse Yagci, Melis Palamar, Ozlem Barut Selver, Banu Yaman
We report a case of cataract-combined penetrating keratoplasty that required rekeratoplasty for refractive status because of the inadvertent use of a cornea from a donor who had undergone LASIK surgery. The case presents the use of perioperative visualization, anterior segment optic coherence tomography, and histopathologic confirmation. A 63-year-old female patient with leukoma and cataract in the left eye underwent combined cataract surgery and penetrating keratoplasty. During surgery, a jelly-like layer extending a few millimeters in diameter was observed around the lenticule...
September 30, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28917415/bilateral-corneal-epithelial-macrocysts-following-hyperopic-laser-in-situ-keratomileusis
#10
Mahmoud O Jaroudi, Carole G Cherfan, Shady T Awwad
A 27-year-old woman had microkeratome-assisted laser in situ keratomileusis (LASIK) for moderate bilateral hyperopia. The preoperative ophthalmologic examination was unremarkable except for minimal lissamine green staining bilaterally on the nasal conjunctiva. On the first postoperative day, the uncorrected distance visual acuity (UDVA) was 20/20 bilaterally and the corneas were clear. Four days later, the patient presented with mild blur in both eyes. Examination showed diffuse bilateral epithelial cysts encompassing the central 6...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28880340/topography-guided-photorefractive-keratectomy-in-the-treatment-of-corneal-scarring
#11
Nir Sorkin, Adi Einan-Lifshitz, Tanguy Boutin, Mahmood Showail, Armand Borovik, Clara C Chan, David S Rootman
PURPOSE: To report the outcome of topography-guided photorefractive keratectomy (TG-PRK) in the treatment of patients with corneal scarring. METHODS: A retrospective, interventional case series including 6 eyes of 6 patients with corneal scarring and irregular astigmatism who underwent TG-PRK. The etiologies for scarring were: infectious corneal ulcers, foreign body trauma, LASIK flap buttonhole, and lamellar keratoplasties performed to correct corneal perforation secondary to corneal melting...
September 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28880332/a-technique-to-reduce-incidence-of-opaque-bubble-layer-formation-during-lasik-flap-creation-using-the-visumax-femtosecond-laser
#12
Ningling Wu, Joseph G Christenbury, Jon G Dishler, Tahir Kansu Bozkurt, Daniel Duel, Lijun Zhang, D Rex Hamilton
PURPOSE: To identify risk factors for opaque bubble layer (OBL) formation and compare the incidence of OBL using a cone modification technique versus the original technique for LASIK flap creation using the VisuMax laser (Carl Zeiss Meditec, Jena, Germany). METHODS: This retrospective study examined videos of flap creation using the VisuMax laser to identify OBL occurrence. Eyes were divided into three groups: eyes where OBL occurred using the original technique (OBL group), eyes where OBL did not occur using the original technique (no OBL group), and eyes in which the cone modification technique was used for LASIK flap creation (larger flap diameter) (cone modification technique group)...
September 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28866013/contrasting-cellular-damage-after-blue-iris-and-femto-lasik-in-cat-cornea
#13
Kaitlin T Wozniak, Noah Elkins, Daniel R Brooks, Daniel E Savage, Scott MacRae, Jonathan D Ellis, Wayne H Knox, Krystel R Huxlin
Blue-intra-tissue refractive index shaping (Blue-IRIS) is a new approach to laser refractive correction of optical aberrations in the eye, which alters the refractive index of the cornea rather than changing its shape. Before it can be implemented in humans, it is critical to establish whether and to what extent, Blue-IRIS damages the cornea. Here, we contrasted the impact of -1.5 D cylinder refractive corrections inscribed using either Blue-IRIS or femtosecond laser in-situ keratomileusis (femto-LASIK) on corneal cell viability...
August 31, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28860701/accuracy-of-alcon-wavelight-%C3%A2-ex500-optical-pachymetry-during-lasik
#14
Mark D Mifflin, Xavier M Mortensen, Brent S Betts, Cole Gross, Brian Zaugg
PURPOSE: To study the accuracy and reliability of optical pachymetry using the Alcon WaveLight EX500 during laser-assisted in situ keratomileusis (LASIK). MATERIALS AND METHODS: This was a retrospective chart review of 90 eyes from 45 patients who had undergone LASIK (mean age 35.2±8.2 years; 19 males, 26 females). The WaveLight FS200 femtosecond laser was programmed to cut LASIK flaps at a desired depth of 120 μm. Optical low-coherence reflectometry (WaveLight EX500) was used to measure central corneal thickness prior to lifting the flap, and the residual stromal bed immediately after excimer ablation...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28794659/erratum-traumatic-corneal-flap-displacement-after-laser-in-situ-keratomileusis-lasik-erratum
#15
(no author information available yet)
[This corrects the article on p. 143 in vol. 10, PMID: 28458585.].
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28741162/-scanning-electron-microscopic-investigations-of-cutting-edge-quality-in-lamellar-keratotomy-using-the-wavelight-femtosecond-laser-fs-200-what-influence-do-spot-distance-and-an-additional-tunnel-have
#16
T Hammer, T Höche, J Heichel
BACKGROUND: Femtosecond lasers (fs-lasers) are established cutting instruments for the creation of LASIK flaps. Previous studies often showed even rougher surfaces after application of fs-laser systems compared to lamellar keratotomy with mechanical microkeratomes. When cutting the cornea with fs-lasers, an intrastromal gas development occurs, which has a potentially negative influence on the cutting quality if the gas cannot be dissipated; therefore, manufacturers have chosen the way of gas assimilation in so-called pockets...
July 24, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28690535/femtosecond-laser-in-situ-keratomileusis-flap-creation-in-narrow-palpebral-fissure-eyes-without-suction
#17
John S M Chang, Antony K P Law, Jack C M Ng, May S Y Cheng
PURPOSE: To evaluate a surgical technique used in eyes with narrow palpebral fissure undergoing femtosecond laser flap creation without suction during laser in situ keratomileusis (LASIK). METHODS: All data of 2 patient groups were collected through chart review. Group 1 consisted of 6 eyes with narrow palpebral fissure in which the suction ring was manually fixated and femtosecond laser was applied accordingly. Thirty comparison cases were randomly drawn from among eyes that underwent a standard LASIK procedure matched for age and preoperative refraction (group 2)...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28672926/bilateral-diffuse-lamellar-keratitis-triggered-by-permanent-eyeliner-tattoo-treatment-a-case-report
#18
Cheng-Wei Lu, Xiu-Fen Liu, Dan-Dan Zhou, Yu-Jiao Kong, Xiao-Feng Qi, Tao-Tao Liu, Ting Qu, Xiao-Tao Pan, Cong Liu, Ji-Long Hao
Diffuse lamellar keratitis (DLK) is a sterile inflammation of the cornea, which may occur after laser-assisted in situ keratomileusis (LASIK) surgery. Little is known about the association of DLK with permanent eyeliner tattoo. The present case report describes the case of a 37-year-old Chinese woman who developed severe foreign body sensation in both eyes 1 week after receiving bilateral permanent eyeliner tattoo treatment. The patient had received bilateral LASIK surgery 10 years previously. Slit-lamp biomicroscopy revealed diffused granular infiltrates precipitated around the edge of the corneal flaps in both eyes...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28651810/comparison-of-5468-retreatments-after-laser-in-situ-keratomileusis-by-lifting-the-flap-or-performing-photorefractive-keratectomy-on-the-flap
#19
J Ortega-Usobiaga, F Llovet-Osuna, T Katz, M R Djodeyre, V Druchkiv, R Bilbao-Calabuig, J Baviera
PURPOSE: To assess visual outcomes of retreatment after laser in situ keratomileusis (LASIK) by lifting the flap or performing photorefractive keratectomy (PRK) on the flap, as well as to establish whether there was an increased risk of epithelial ingrowth (EIG) when LASIK and lifting of the flap are separated by a long time interval and to determine the incidence of corneal haze after PRK. METHODS: Retrospective study of 4077 patients (5468 eyes) who underwent LASIK and subsequent retreatment were reviewed in order to study their visual results and identify cases of EIG and corneal haze...
June 23, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28594648/risk-profiles-of-ectasia-after-keratorefractive-surgery
#20
Pushpanjali Giri, Dimitri T Azar
PURPOSE OF REVIEW: To identify and evaluate the risk factors of iatrogenic ectasia after refractive surgery. RECENT FINDINGS: We reviewed recently published papers that identified various risk factors associated with ectasia after LASIK, photorefractive keratectomy, small incision lenticule extraction, and other refractive surgical procedures. We also attempted to evaluate the relative contributions of these factors to the development of ectasia following refractive surgery...
July 2017: Current Opinion in Ophthalmology
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