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https://www.readbyqxmd.com/read/28197998/laser-assisted-subepithelial-keratectomy-lasek-versus-laser-assisted-in-situ-keratomileusis-lasik-for-correcting-myopia
#1
REVIEW
Jocelyn Kuryan, Anjum Cheema, Roy S Chuck
BACKGROUND: Near-sightedness, or myopia, is a condition in which light rays entering the eye along the visual axis focus in front of the retina, resulting in blurred vision. Myopia can be treated with spectacles, contact lenses, or refractive surgery. Options for refractive surgery include laser-assisted subepithelial keratectomy (LASEK) and laser-assisted in-situ keratomileusis (LASIK). Both procedures utilize a laser to shape the corneal tissue (front of the eye) to correct refractive error, and both create flaps before laser treatment of corneal stromal tissue...
February 15, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28192838/topography-guided-prk-and-crosslinking-in-eyes-with-keratoconus-and-post-lasik-ectasia
#2
T M Müller, A P Lange
Topography-guided photorefractive keratectomy (TG-PRK) combined with corneal collagen crosslinking (CXL) has been shown to potentially improve vision and stabilize progression in patients with keratoconus (KC). We attempted to reproduce the previously published results using a different laser platform (AMARIS 500E) in patients with KC and post-LASIK ectasia (PLE). All of the 9 included eyes showed improved topography (Kmax, Kmean, RMS HOA, vertical coma, cylinder; p < 0.05) and improved visual acuity (BCVA, UCVA; p < 0...
February 13, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28192591/lasik-enhancement-clinical-and-surgical-management
#3
Majid Moshirfar, Naz Jehangir, Carlton R Fenzl, Michael McCaughey
PURPOSE: To review refractive regression and current therapeutic options for patients who have residual refractive error after LASIK. METHODS: An extensive literature search using PubMed was performed for terms such as "LASIK," "PRK," "enhancement," "overcorrection," "undercorrection," "re-lift," "mini-flap," and related terms. RESULTS: The presence of residual refractive error following LASIK is a challenging situation. After excluding anatomical causes (eg, ocular surface disease, cataract, and macular pathology) and intraoperative flap complications, evaluation of the residual stromal bed must be performed...
February 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28192202/ethnomedicinal-uses-of-plants-for-the-treatment-of-malaria-in-soon-valley-khushab-pakistan
#4
Amin Shah, Sarvat Rahim
ETHNOPHARMACOLOGICAL RELEVANCE: To best of our knowledge this is the first quantitative ethno-medicinal study with the aim of documenting the indigenous knowledge and practices of using plants for malarial therapy in Soon Valley, Khushab, Pakistan. In this Valley, malaria is among the major public health problems but, until now, the population still mostly relies on herbal medicine for treatment. MATERIALS AND METHODS: Ethno-medicinal data were documented from 63 informants by using semi-structured questionnaires and interviewing the informants about their knowledge of plants regarding malaria and related symptoms...
February 10, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28188942/photorefractive-keratectomy-with-mitomycin-c-for-high-myopia-three-year-follow-up-results
#5
Hassan Hashemi, Yahya Salimi, Poopak Pir, Soheila Asgari
Photorefractive keratectomy (PRK) is a safe and effective surgical keratorefractive technique which is done with the application of mitomycin-C (MMC) in cases of high myopia to prevent the formation of corneal haze This study was conducted to evaluate 3-year visual acuity and quality outcomes of PRK-MMC in high myopia. This before-after study was conducted on 20 individuals (40 eyes) with myopia more than 6.0 diopter (D). Visual acuity and quality indices were evaluated before and three years after the procedure and their stability was examined between the 1st and 3rd years...
January 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28187472/-epi-bowman-keratectomy-clinical-evaluation-of-a-new-method-of-surface-ablation
#6
S Taneri, S Kießler, A Rost, T Schultz, M Elling, B Dick
Purpose A new device for epithelial abrasion before excimer laser surface ablation or corneal cross-linking (CXL) has recently been introduced (Epi-Clear™, Orca Surgical, Kiryat-Shmona, Israel). We have reviewed the literature on the clinical results, potential benefits and drawbacks of this instrument, compared to other methods of epithelial removal. Method Literature search for "Epi-Bowman Keratectomy", "Epi-clear", and "Epikeratome" yielded 1 peer-review publication, 1 non-peer-review publication, 18 posters and presentations at international conferences (European Society of Cataract and Refractive Surgeons [ESCRS] and American Society of Cataract and Refractive Surgery [ASCRS]) on the use of the Epi-Clear™ device before surface ablation, 2 posters on the use of Epi-Clear before corneal crosslinking and 1 presentation on the experimental use of Epi-Clear for removal of a pterygium...
February 10, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28168049/photorefractive-keratectomy-for-residual-myopia-after-myopic-laser-in-situ-keratomileusis
#7
Kamal A M Solaiman, Sameh M Fouda, Ashraf Bor'i, Haitham Y Al-Nashar
Purpose. To evaluate the safety, efficacy, and predictability of photorefractive keratectomy (PRK) on the corneal flap for correction of residual myopia following myopic laser in situ keratomileusis (LASIK). Patients and Methods. A retrospective study on eyes retreated by PRK on the corneal flap for residual myopia after LASIK. All eyes had no enough stroma after LASIK sufficient for LASIK enhancement. Data included spherical equivalent (SE), uncorrected and best corrected visual acuity (UCVA and BCVA), central pachymetry, corneal higher order aberrations (HOAs), corneal hysteresis (CH), corneal resistance factor (CRF), and corneal haze...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28135746/-smile-re-treatment-options-techniques-and-results
#8
B Meyer, K S Kunert
With a rate of less than 2 %, retreatment after SMILE is rare. If a touch-up is required, there are different options to choose from: surface ablation (PRK/LASEK) with Mitomycin C, the standard femto-flap procedure with the same parameters, the CIRCLE procedure, which extends the previous SMILE interface into a flap, or the innovative but off-label capless SMILE procedure, which preserves all the advantages of SMILE.
January 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28108419/regulation-of-protein-kinase-c-related-kinase-prk-signalling-by-the-tp%C3%AE-and-tp%C3%AE-isoforms-of-the-human-thromboxane-a2-receptor-implications-for-thromboxane-and-androgen-dependent-neoplastic-and-epigenetic-responses-in-prostate-cancer
#9
Aine G O'Sullivan, Eamon P Mulvaney, B Therese Kinsella
The prostanoid thromboxane (TX) A2 and its T Prostanoid receptor (the TP) are increasingly implicated in prostate cancer (PCa). Mechanistically, we recently discovered that both TPα and TPβ form functional signalling complexes with members of the protein kinase C-related kinase (PRK) family, AGC- kinases essential for the epigenetic regulation of androgen receptor (AR)-dependent transcription and promising therapeutic targets for treatment of castrate-resistant prostate cancer (CRPC). Critically, similar to androgens, activation of the PRKs through the TXA2/TP signalling axis induces phosphorylation of histone H3 at Thr11 (H3Thr11), a marker of androgen-induced chromatin remodelling and transcriptional activation, raising the possibility that TXA2-TP signalling can mimic and/or enhance AR-induced cellular changes even in the absence of circulating androgens such as in CRPC...
January 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28068448/photorefractive-keratectomy-with-mitomycin-c-in-meesmann-s-epithelial-corneal-dystrophy
#10
Ramon Coral Ghanem, André Luís Piccinini, Vinícius Coral Ghanem
PURPOSE: To describe a case of Meesmann's epithelial corneal dystrophy that underwent photorefractive keratectomy (PRK) with mitomycin C. METHODS: Case report. RESULTS: A 36-year-old woman was evaluated for refractive surgery. She had a history of recurrent epithelial erosions and moderate visual loss over the past 10 years. Biomicroscopy revealed bilateral micro-cystic epithelial lesions and a diagnosis of Meesmann's epithelial corneal dystrophy was proposed...
January 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28068444/effectiveness-of-an-eyelid-thermal-pulsation-procedure-to-treat-recalcitrant-dry-eye-symptoms-after-laser-vision-correction
#11
Craig S Schallhorn, Julie M Schallhorn, Stephen Hannan, Steven C Schallhorn
PURPOSE: To provide an initial retrospective evaluation of the effectiveness of a thermal pulsation system to treat intractable patient-reported dye eye symptoms following laser vision correction. METHODS: A total of 109 eyes of 57 patients underwent thermal pulsation therapy (LipiFlow; TearScience, Morrisville, NC) for the treatment of dry eye symptoms following laser vision correction. A standardized dry eye questionnaire, the Standard Patient Evaluation of Eye Dryness (SPEED II), was administered to all patients before and after thermal pulsation therapy...
January 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28051986/wavefront-guided-versus-wavefront-optimized-photorefractive-keratectomy-visual-and-military-task-performance
#12
Denise S Ryan, Rose K Sia, Richard D Stutzman, Joseph F Pasternak, Robin S Howard, Christopher L Howell, Tana Maurer, Mark F Torres, Kraig S Bower
PURPOSE: To compare visual performance, marksmanship performance, and threshold target identification following wavefront-guided (WFG) versus wavefront-optimized (WFO) photorefractive keratectomy (PRK). METHODS: In this prospective, randomized clinical trial, active duty U.S. military Soldiers, age 21 or over, electing to undergo PRK were randomized to undergo WFG (n = 27) or WFO (n = 27) PRK for myopia or myopic astigmatism. Binocular visual performance was assessed preoperatively and 1, 3, and 6 months postoperatively: Super Vision Test high contrast, Super Vision Test contrast sensitivity (CS), and 25% contrast acuity with night vision goggle filter...
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28007105/outcomes-and-complications-of-excimer-laser-surgery-in-patients-with-collagen-vascular-and-other-immune-mediated-inflammatory-diseases
#13
Julie M Schallhorn, Steven C Schallhorn, Keith A Hettinger, Jan A Venter, Martina Pelouskova, David Teenan, Stephen J Hannan
PURPOSE: To assess refractive and visual outcomes and postoperative complications in a large number of patients with well-controlled collagen vascular and other immune-mediated inflammatory diseases. SETTING: Optical Express, Glasgow, United Kingdom. DESIGN: Retrospective case series. METHODS: The files were reviewed of patients who had collagen vascular and other immune-mediated inflammatory diseases and who had excimer laser surgery between 2008 and 2015...
December 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28003777/correlation-between-practice-location-as-a-surrogate-for-uv-exposure-and-practice-patterns-to-prevent-corneal-haze-after-photorefractive-keratectomy-prk
#14
Eman M Al-Sharif, Donald U Stone
BACKGROUND: PRK is a refractive surgery that reshapes the corneal surface by excimer laser photoablation to correct refractive errors. The effect of increased ultraviolet (UV) exposure on promoting post-PRK corneal haze has been reported in the literature; however, information is lacking regarding the effect of ambient UV exposure on physician practice patterns. The aim of this study was to evaluate the effect of ophthalmologists' practice location on their reported practice patterns to prevent post-PRK corneal haze...
October 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28002091/vector-analysis-of-1-year-astigmatic-outcomes-from-a-randomized-fellow-eye-comparison-of-photorefractive-keratectomy-using-2-excimer-laser-platforms
#15
Brian C Toy, Edward E Manche
OBJECTIVE: To compare the astigmatic outcomes of photorefractive keratectomy (PRK) with a wavefront-guided (WFG) and a wavefront-optimized (WFO) excimer laser performed on two different platforms. METHODS: Setting: institutional. DESIGN: Prospective, randomized, fellow eye comparison clinical trial. PARTICIPANTS: A total of 142 eyes of 71 patients with myopia of 12 diopters (D) or less and astigmatism of 3D or less were enrolled at the Byers Eye Institute at Stanford between April 2009 and March 2011...
December 19, 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/27994803/transepithelial-photorefractive-keratectomy-for-low-to-moderate-myopia-in-comparison-with-conventional-photorefractive-keratectomy
#16
Mostafa Naderi, Khosrow Jadidi, Seyed Aliasghar Mosavi, Seyed Aref Daneshi
PURPOSE: To compare the effectiveness, safety and stability of the results of transepithelial photorefractive keratectomy (tPRK) with conventional photorefractive keratectomy (PRK) for low to moderate myopia. METHODS: In this prospective non-randomized case-control study, patients with low to moderate myopia were assigned to the tPRK group (cases) or the PRK group (controls). In the tPRK group, eyes were treated using the Amaris excimer laser (SCHWIND eye-tech-solutions GmbH and Co...
October 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27994802/comparison-of-higher-order-aberrations-after-wavefront-guided-lasik-and-prk-one-year-follow-up-results
#17
Seyed Hamid Reza Jahadi Hosseini, Seyed Mohammad Bagher Abtahi, Mohammad Reza Khalili
PURPOSE: To evaluate the changes and predictability of higher order aberrations (HOAs) after personalized laser in situ keratomileusis (LASIK) and personalized photorefractive keratectomy (PRK) for simple myopia and compound myopic astigmatism. METHODS: In this prospective cross-sectional study, 100 eyes were included. A total of 50 eyes underwent personalized LASIK and 50 eyes underwent personalized PRK. Preoperative and postoperative wavefront data were compared between the two groups...
October 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27956824/short-term-visual-result-after-simultaneous-photorefractive-keratectomy-and-small-aperture-cornea-inlay-implantation
#18
Majid Moshirfar, Ryan T Wallace, David F Skanchy, Jordan D Desautels, Steven H Linn, Phillip C Hoopes, Daniel S Durrie
PURPOSE: To report the short-term results of simultaneous photorefractive keratectomy (PRK) and small-aperture cornea inlay implantation (KAMRA) surgery in treating presbyopia. METHODS: Simultaneous PRK and KAMRA inlay surgery was performed on 21 patients from July 2015 to March 2016. Follow-up exams were conducted at 1, 3, and 6 months postoperatively. Our patients were also divided preoperatively into three categories: myopic, hyperopic, and emmetropic. Over the 6-month period, the main outcome measures were uncorrected near visual acuity (UNVA), changes in best-corrected distance visual acuity, and mean spherical equivalent refraction...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27956284/myopia-correction-with-transepithelial-photorefractive-keratectomy-versus-femtosecond-assisted-laser-in-situ-keratomileusis-one-year-case-matched-analysis
#19
Michiel H A Luger, Tobias Ewering, Samuel Arba-Mosquera
PURPOSE: To compare the postoperative clinical outcomes of single-step transepithelial photorefractive keratectomy (PRK) and femtosecond-assisted laser in situ keratomileusis (LASIK). SETTING: Bergman Clinics, Utrecht, the Netherlands. DESIGN: Retrospective case series. METHODS: The eyes of consecutive patients who had transepithelial PRK were retrospectively compared with the same number of case-matched eyes (based on the preoperative refractive components) treated with femtosecond-assisted LASIK...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27956283/single-step-transepithelial-photorefractive-keratectomy-in-myopia-and-astigmatism-18-month-follow-up
#20
Soheil Adib-Moghaddam, Saeed Soleyman-Jahi, Bahram Salmanian, Amir-Houshang Omidvari, Fatemeh Adili-Aghdam, Farsad Noorizadeh, Medi Eslani
PURPOSE: To evaluate the long-term quantitative and qualitative optical outcomes of 1-step transepithelial photorefractive keratectomy (PRK) to correct myopia and astigmatism. SETTING: Bina Eye Hospital, Tehran, Iran. DESIGN: Prospective interventional case series. METHODS: Eyes with myopia with or without astigmatism were evaluated. One-step transepithelial PRK was performed with an aberration-free aspheric optimized profile and the Amaris 500 laser...
November 2016: Journal of Cataract and Refractive Surgery
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