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https://www.readbyqxmd.com/read/28922329/conventional-corneal-collagen-cross-linking-versus-transepithelial-diluted-alcohol-and-iontophoresis-assisted-corneal-cross-linking-in-progressive-keratoconus
#1
Kamil Bilgihan, Nilufer Yesilirmak, Yesim Altay, Armagan Yuvarlak, Huseyin Baran Ozdemir
PURPOSE: To compare clinical outcomes of conventional corneal cross-linking (C-CXL) and diluted alcohol and iontophoresis-assisted corneal cross-linking (DAI-CXL) for the treatment of progressive keratoconus (KC). METHODS: Ninety-three eyes of 80 patients with KC were treated by C-CXL (n = 47) or DAI-CXL (n = 46). Visual acuity, keratometry, KC indexes, pachymetry, and aberrations were recorded before treatment and 1, 3, 6, and 12 months after treatment. The demarcation line was assessed 1 month after treatment...
September 14, 2017: Cornea
https://www.readbyqxmd.com/read/28917407/corneal-topography-and-keratometry-changes-after-glued-intraocular-lens-implantation
#2
Dhivya Ashok Kumar, Harspreet Kaur, Amar Agarwal, Sajitha Selvaraj, Sathish Kumar Pandian, Vamsi Chintalpati
PURPOSE: To analyze the alterations in corneal topography and keratometry (K) after glued transscleral-fixated intraocular lens (IOL) implantation. SETTING: Dr. Agarwal's Eye Hospital, Chennai, India. DESIGN: Prospective case series. METHODS: Eyes having glued IOL implantation for aphakia or subluxated lens (>180 degrees) were included. Preoperative autorefractometer and corneal topography was performed. Intraoperative parameters, namely the type, position, and incision size, flap position, and number of sutures were noted...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28902010/posterior-amorphous-corneal-dystrophy-associated-with-keratoglobus-a-case-report
#3
Jonathan Fay, Alexandra A Herzlich, George J Florakis
PURPOSE: Posterior amorphous corneal dystrophy (PACD) is a rare disorder characterized by sheet-like opacification of the posterior corneal stroma, corneal thinning, and decreased corneal curvature. It is not known to be associated with progressive corneal ectasia. In this report, we examine the course of a patient with PACD who developed bilateral keratoglobus-type corneal ectasia. METHODS: The clinical history of a single patient is reviewed from birth through age 15...
September 8, 2017: Cornea
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
#4
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/28879527/diabetes-and-pachymetry-changes-in-pregnancy
#5
Florence Santiagu, Azam Bakhtiari, Tajunisah Iqbal, Nurliza Khaliddin, Van C Lansingh, Visvaraja Subrayan
BACKGROUND: Purpose of this study is to evaluate changes in the central corneal thickness (CCT) in patients during the third trimester and postpartum phases of normal pregnancy, pregestational diabetes mellitus (DM), and gestational diabetes mellitus (GDM). METHODS: This was a prospective study. Patients that fulfilled the inclusion criteria were recruited from the obstetric clinic. They were grouped into normal pregnancy, pregestational DM, and GDM. Ophthalmic assessment and haematological investigations were done during the third trimester (after 28 weeks of gestation) and in the postpartum phase (6 weeks postpartum)...
September 6, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28860701/accuracy-of-alcon-wavelight-%C3%A2-ex500-optical-pachymetry-during-lasik
#6
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/28844326/-comparison-of-anatomic-and-functional-results-between-z6%C3%A2-femtosecond-laser-assisted-and-manual-trephination-in-deep-anterior-lamellar-keratoplasty-for-advanced-keratoconus-french-version
#7
A Blériot, E Martin, P Lebranchu, K Zimmerman, L Libeau, M Weber, B Vabres, I Orignac
The management of severe keratoconus requires corneal transplantation, for which the gold standard is deep anterior lamellar keratoplasty (DALK), preserving the healthy Descemet's membrane and endothelium. The safety and reproducibility of corneal cuts have been improved by the evolution of femtosecond lasers in refractive surgery, and femtosecond laser in DALK would seem to provide the same advantages over the manual method. In our retrospective study, we compare functional and anatomical results of femtosecond assisted DALK versus manual trephination DALK in patients with keratoconus in stage 4 of the Krumeich classification...
September 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28834824/comparison-of-central-corneal-thickness-measurements-using-ultrasonic-pachymetry-anterior-segment-oct-and-noncontact-specular-microscopy
#8
Riccardo Scotto, Alessandro Bagnis, Marina Papadia, Carlo Alberto Cutolo, Domenico Risso, Carlo Enrico Traverso
PURPOSE: To evaluate and compare central corneal thickness (CCT) values measured with anterior segment optical coherence tomography (AS-OCT), noncontact specular microscopy (NCSM), and ultrasound pachymetry (USP). MATERIALS AND METHODS: CCT was measured in 182 healthy eyes without ocular abnormalities other than refractive errors. Three consecutive measurements of CCT by the same examiner were obtained during the same session. The testing sequence of AS-OCT and NCSM was randomly selected...
August 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28816818/reproducibility-of-central-corneal-thickness-measurements-in-healthy-and-glaucomatous-eyes
#9
Tony Realini, Matthew J Gurka, Robert N Weinreb
PURPOSE: The purpose of this study is to characterize intraday and interday variation in central corneal thickness (CCT) in healthy and glaucomatous subjects. METHODS: In this prospective cohort study, 40 healthy subjects and 42 subjects with primary open-angle glaucoma underwent CCT measurements by ultrasonic pachymetry on 5 days over 1 year: first at baseline, then at 1 week and 1, 6, and 12 months after baseline. On 1visit, CCT was measured every 2 hours from 08:00 to 20:00...
September 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28815089/risk-assessment-for-corneal-ectasia-following-photorefractive-keratectomy
#10
Nir Sorkin, Igor Kaiserman, Yuval Domniz, Tzahi Sela, Gur Munzer, David Varssano
PURPOSE: To analyze the risk factors associated with a series of ectasia cases following photorefractive keratectomy (PRK) and all published cases. METHODS: In a retrospective study on post-PRK ectasia patients, 9 eyes of 7 patients were included, in addition to 20 eyes of 13 patients from the literature. Risk of post-PRK ectasia was calculated using the ectasia risk score system (ERSS) for laser in situ keratomileusis (LASIK) patients. The percent tissue altered (PTA) was also evaluated...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28811773/transepithelial-corneal-crosslinking-in-treatment-of-progressive-keratoconus-12-months-clinical-results
#11
Bushra Akbar, Rana Intisar-Ul-Haq, Mazhar Ishaq, Sabahat Arzoo, Kashif Siddique
OBJECTIVE: The purpose of this study was to evaluate the safety and efficacy of transepithelial corneal collagen cross linking (TE-CXL) with modified riboflavin and accelerated UVA irradiance in thin corneas with pachymetry less than 400 microns at thinnest point, untreatable by epithelium off corneal collagen cross linking (CXL) in adult Pakistani population with progressive keratoconus. METHODS: This quasi experimental study included twenty six eyes of 26 patients with progressive keratoconus who underwent accelerated transepithelial CXL in Armed forced institute of ophthalmology with 12 months follow up...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28777100/scleral-pneumatonometry-in-penetrating-keratoplasty-a-clinical-study
#12
Otavio A Magalhaes, Anthony J Aldave
PURPOSE: To evaluate the reliability between pneumatonometry intraocular pressure (IOP) measurement in different scleral locations and corneal IOP in a penetrating keratoplasty (PK) setting. Our aim is to validate a method that can potentially be used for patients with keratoprostheses. METHODS: This is a prospective observational study of 40 patients who underwent monocular PK by a single surgeon and had no significant anterior segment condition in the contralateral eye...
October 2017: Cornea
https://www.readbyqxmd.com/read/28761329/comparison-of-different-intraocular-pressure-measurement-techniques-in-normal-eyes-and-post-small-incision-lenticule-extraction
#13
Mohamed Hosny, Fayrouz Aboalazayem, Hoda El Shiwy, Mohsen Salem
PURPOSE: The purpose of the study was to determine the accuracy of intraocular pressure (IOP) measurement after small incision lenticule extraction (SMILE) using Goldmann applanation tonometry (GAT) and ocular response analyzer (ORA). METHODS: This is a prospective clinical study that was conducted on 30 eyes in the interval between February 2016 and September 2016. The age of the patients ranged between 19 and 40 years. The patients underwent SMILE surgery using the femto laser...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28726533/ophthalmic-findings-in-patients-with-arterial-tortuosity-syndrome-and-carriers-a-case-series
#14
Joshua S Hardin, Yuri A Zarate, Bert Callewaert, Paul H Phillips, David B Warner
INTRODUCTION: Arterial tortuosity syndrome (ATS) is a rare autosomal recessive disease hallmarked by tortuosity, stenosis, and aneurysm development of large- and medium-sized arteries. Mutations in SLC2A10, a gene that encodes the facilitative glucose transporter GLUT10, cause ATS. Several case reports have noted associated ophthalmic findings such as keratoconus, keratoglobus, and myopia without detailed descriptions or standardized examinations. We report the ophthalmic findings in a cohort of compound heterozygous ATS patients and heterozygous carriers of SLC2A10 mutations...
July 20, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28716114/visumax-femtolasik-versus-moria-m2-microkeratome-in-mild-to-moderate-myopia-efficacy-safety-predictability-aberrometric-changes-and-flap-thickness-predictability
#15
Magda A Torky, Yousif A Al Zafiri, Abeer M Khattab, Rania K Farag, Eman A Awad
INTRODUCTION: This is an interventional prospective clinical study which was conducted to evaluate the efficacy, safety, predictability, ocular aberrations, and flap thickness predictability of Visumax femtosecond laser (FSL) compared to Moria M2 microkeratome (MK) in mild to moderate myopia. METHODS: This study included 60 eyes who were divided into two groups. Thirty eyes in group (I) in which the flap was created with Visumax FSL, while in group II (30 eyes) the Moria M2 MK was used...
July 17, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28707255/comparative-clinical-study-of-whitestar-signature-phacoemulsification-system-with-standard-and-ellips-fx-handpieces
#16
Daniele Tognetto, Rossella D'Aloisio, Paolo Cecchini, Marta Di Nicola, Giuseppe Di Martino
PURPOSE: To compare the intraoperative parameters and postoperative outcomes using two different phaco handpieces with different energy delivery systems of the same phacoemulsification machine. METHODS: One hundred and sixty eyes of 160 cataract patients were randomly assigned to 2.40 mm phacoemulsification using the AMO WhiteStar Signature(®) phaco system with the standard phaco handpiece (Group 1) or the Ellips FX phaco handpiece (Group 2). According to the lens opacities classification system III, each group was divided into four subgroups of 20 patients each...
July 13, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28704318/interrelationships-between-3-keratoconic-cone-parameters
#17
Kyaw L Tu, Abdo K Tourkmani, Singaram Srinivas
PURPOSE: To find out the interrelationships between 3 parameters of the keratoconic cone. METHODS: A total of 101 keratoconic eyes of 58 patients were included in this retrospective case series study. A complete eye examination was performed. Kmax (K) and pachymetry at the thinnest point (T) were obtained from the Pentacam tomographer. The vertex to thinnest pachymetry distance (D for decentration) was calculated using trigonometry. Pearson correlation coefficients between T and D, between T and K, and between D and K were calculated...
September 2017: Cornea
https://www.readbyqxmd.com/read/28700779/corneal-wound-repair-after-rose-bengal-and-green-light-crosslinking-clinical-and-histologic-study
#18
Patricia Gallego-Muñoz, Lucía Ibares-Frías, Elvira Lorenzo, Susana Marcos, Pablo Peréz-Merino, Nandor Bekesi, Irene E Kochevar, M Carmen Martínez-García
Purpose: To evaluate corneal wound healing after treatment with a new collagen crosslinking protocol using rose bengal dye and green light (RGX). Methods: One cornea of 20 New Zealand rabbits was de-epithelialized (DE) in an 8-mm diameter circle and, in another group (n = 25), the DE corneas were then stained with 0.1% rose bengal for 2 minutes and exposed to green light (532 nm) for 7 minutes (RGX). The contralateral eyes without treatment acted as controls. The animals were clinically followed including fluorescein staining and pachymetry...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28699324/corneal-endothelial-cell-loss-and-corneal-biomechanical-characteristics-after-two-step-sequential-or-combined-phaco-vitrectomy-surgery-for-idiopathic-epiretinal-membrane
#19
Hassan Hamoudi, Ulrik Correll Christensen, Morten La Cour
PURPOSE: To assess the impact of sequential and combined surgery [cataract surgery and 23-gauge pars plana vitrectomy (PPV) with peeling] on corneal endothelium cell density (CED) and corneal biomechanical characteristics. METHODS: Phakic eyes with epiretinal membrane (ERM) were prospectively allocated to (i) cataract surgery and subsequent PPV (CAT group), (ii) PPV and subsequent cataract surgery (VIT group) or (iii) phacovitrectomy (COMBI group). Eyes were examined at baseline, 1 month after each surgery, and at 3 and 12 months follow-up...
August 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28658437/indications-and-visual-outcomes-of-intrastromal-corneal-ring-segment-implantation-in-a-large-patient-series
#20
Taíse Tognon, Mauro Campos, João Paulo Wengrzynovski, Kleyton Arlindo Barella, Adriano Pasqualotti, Luiz Antônio de Brito Martins, Adriana Dos Santos Forseto, Luciene Barbosa de Sousa
OBJECTIVES: To describe the indications for and visual outcomes of intrastromal corneal ring segment implantation. METHODS: A large retrospective case-series chart-review study was conducted using Sorocaba Ophthalmological Hospital medical records. This study included 1222 eyes (1196 patients) that were surgically treated between November 2009 and December 2012. The following preoperative data were collected: age, gender, type of medical care and funding source, surgical technique, best-corrected visual acuity, manifest sphere and cylinder refractive error, maximum and minimum central keratometry, and pachymetry measurements of the cornea at the thinnest point and at the ring channel...
June 2017: Clinics
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