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https://www.readbyqxmd.com/read/29781926/repeatability-and-intersession-reproducibility-of-pentacam-corneal-thickness-maps-in-fuchs-dystrophy-and-endothelial-keratoplasty
#1
David Mingo-Botín, Francisco Arnalich-Montiel, Ana Couceiro de Juan, Sara Ortiz-Toquero
PURPOSE: To assess intrasession repeatability and intersession reproducibility of Pentacam corneal thickness maps in patients with Fuchs endothelial corneal dystrophy (FECD) before and after endothelial transplantation. METHODS: In this observational diagnostic evaluation, 20 healthy subjects along with 81 consecutive patients were examined. Patients were classified into 4 groups: FECD without corneal edema, FECD with corneal edema, Descemet stripping automated endothelial keratoplasty, and Descemet membrane endothelial keratoplasty...
May 16, 2018: Cornea
https://www.readbyqxmd.com/read/29757852/comparison-of-corneal-collagen-cross-linking-protocols-measured-with-scheimpflug-tomography
#2
Mehdi Shajari, Gabriela Sowwa, Gernot Steinwender, Christian Hofmann, Marie-Luise Pahlitzsch, Kerstin Petermann, Thomas Kohnen
PURPOSE: To evaluate the effectiveness of corneal collagen cross-linking with Dresden and accelerated protocols to treat keratoconus by Scheimpflug tomography. METHODS: Fifty-eight eyes with manifest keratoconus were measured preoperatively at least twice with the Pentacam. The difference of relevant variables for keratoconus progression (eg, D value, thinnest pachymetry, Kmax) was established. After evident progression, patients underwent corneal cross-linking (29 eyes with the Dresden protocol and 29 eyes with the accelerated protocol)...
May 1, 2018: Cornea
https://www.readbyqxmd.com/read/29750010/comparative-analysis-of-safety-and-efficacy-of-photorefractive-keratectomy-versus-photorefractive-keratectomy-combined-with-crosslinking
#3
Gitansha Shreyas Sachdev, Shreyas Ramamurthy, Ramamurthy Dandapani
Purpose: To assess the safety, efficacy, and refractive predictability of half-fluence accelerated corneal collagen crosslinking (CXL) applied concurrently with photorefractive keratectomy (PRK), and compare the results to standard PRK. Setting: Refractive Services, The Eye Foundation, Coimbatore, India. Design: Interventional comparative case series. Methods: Patients seeking refractive correction for myopia or myopic astigmatism were included in the study...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29746325/corneal-cross-linking-in-pediatric-patients-evaluating-treated-and-untreated-eyes-5-year-follow-up-results
#4
Lior Or, Assaf Rozenberg, Adi Abulafia, Isaac Avni, David Zadok
PURPOSE: To evaluate the long-term results of corneal collagen cross-linking (CXL) for treatment of pediatric keratoconus and the long-term outcomes of the fellow untreated keratoconic eye in patients younger than 18 years old. METHODS: A retrospective case analysis was performed on 88 eyes of 44 patients aged 18 years or younger, with keratoconus, who underwent CXL in at least 1 eye. Follow-up measurements, for the treated and untreated eye pair, taken up to 5 years after treatment, were compared with baseline values...
May 3, 2018: Cornea
https://www.readbyqxmd.com/read/29719636/effect-of-cycloplegia-on-corneal-biometrics-and-refractive-state
#5
Abbas Bagheri, Mohadeseh Feizi, Aliakbar Shafii, Amir Faramarzi, Mehdi Tavakoli, Shahin Yazdani
Purpose: To determine changes in refractive state and corneal parameters after cycloplegia with cyclopentolate hydrochloride 1% using a dual Scheimpflug imaging system. Methods: In this prospective cross-sectional study patients aged 10 to 40 years who were referred for optometric evaluation enrolled and underwent autorefraction and corneal imaging with the Galilei dual Scheimpflug system before and 30 minutes after twice instillation of medication. Changes in refraction and astigmatism were investigated...
April 2018: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29681640/reproducibility-of-the-measurement-of-central-corneal-thickness-in-healthy-subjects-obtained-with-the-optical-low-coherence-reflectometry-pachymeter-and-comparison-with-the-ultrasonic-pachymetry
#6
Manuel Garza-Leon, Eduardo Plancarte-Lozano, Agustín Del Valle-Penella, María de Lourdes Guzmán-Martínez, Andrés Villarreal-González
Background: Corneal pachymetry is widely used for refractive surgery and follow up in keratoconus, accurate measurement is essential for a safe surgery. Objective: To assess intraobserver reliability of central corneal thickness (CCT) measurements using optical low-coherence reflectometry (OLCR) technology and its agreement with ultrasonic pachymeter (US). Method: Randomized and prospective comparative evaluation of diagnostic technology. One randomly healthy eye of subjects was scanned three times with both devices...
2018: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/29681179/-femtosecond-laser-assisted-keratoplasty
#7
László Módis, Eszter Szalai, Zsuzsanna Flaskó, Bence Kolozsvári, András Berta
INTRODUCTION AND AIM: To present our results on femtosecond laser-assisted penetrating keratoplasty. PATIENTS AND METHOD: Twenty-five eyes of 25 patients underwent surgery with the following indications: pseudophakic bullous keratopathy (n = 10), keratoconus (n = 4), corneal dystrophy (n = 5), corneal scar (n = 4), band keratopathy (n = 2). Trephination of both the donor and recipient corneas were performed with VisuMax femtosecond laser device (Carl Zeiss Meditec AG, Jena, Germany)...
April 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29668572/atypical-presentation-of-iridocorneal-endothelial-syndrome-with-band-keratopathy-but-no-corneal-edema-managed-with-descemet-membrane-endothelial-keratoplasty
#8
Vasiliki Zygoura, Itay Lavy, Robert M Verdijk, Diana Santander-García, Lamis Baydoun, Isabel Dapena, Gerrit R J Melles
PURPOSE: To report an unusual presentation of iridocorneal endothelial (ICE) syndrome associated with band keratopathy and its management with ethylenediamine-tetraacetic acid (EDTA) chelation and Descemet membrane endothelial keratoplasty (DMEK). METHODS: A 57-year-old female patient presented with unilateral progressive painless visual impairment, corneal band keratopathy, and morphological corneal endothelial changes without corneal edema or any previous ophthalmic, medical, or family history...
April 17, 2018: Cornea
https://www.readbyqxmd.com/read/29666915/corneal-crosslinking-cxl-with-18-mw-cm-2-irradiance-and-5-4-j-cm-2-radiant-exposure-early-postoperative-safety
#9
Isaak Fischinger, Theo G Seiler, Karthiga Santhirasegaram, Moritz Pettenkofer, Chris P Lohmann, Daniel Zapp
PURPOSE: To investigate safety of accelerated corneal crosslinking during the first postoperative month. METHODS: In this retrospective study, 76 eyes of 60 patients with verified progressive keratectasia were enrolled in this study and followed for 1 month after accelerated CXL (18 mW/cm2 for 5 min, radiant exposure 5.4 J/cm2 ) (A-CXL(5*18)). Preoperatively, objective refraction, slit lamp inspection, and corneal tomography were performed. Early postoperative slit lamp examinations were performed on days 1 and 4...
April 17, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29621511/spectral-domain-optical-coherence-tomography-in-limbal-stem-cell-deficiency-a-case-control-study
#10
Nilly Banayan, Cristina Georgeon, Kate Grieve, Vincent M Borderie
PURPOSE: To evaluate the efficacy of optical coherence tomography as a non-contact method for imaging the ocular surface in limbal stem cell deficiency (LSCD) and normal eyes. DESIGN: Retrospective case-control study. METHODS: SETTING: Institutional. STUDY POPULATION: 22 eyes with LSCD (study group, 22 patients) and 10 normal eyes (control group, 10 patients). OBSERVATION PROCEDURES: SD-OCT and confocal microscopy in both the limbal and central corneal zones...
April 2, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29610222/two-year-follow-up-of-corneal-cross-linking-and-refractive-surface-ablation-in-patients-with-asymmetric-corneal-topography
#11
João Baptista N S Malta, H Kaz Soong, Bernardo Kaplan Moscovici, Mauro Campos
AIMS: To evaluate the safety and efficacy of corneal cross-linking (CXL) followed by photorefractive keratectomy (PRK) for refractive correction in patients with bilateral asymmetric topography. METHODS: Forty-four patients (88 eyes) were enrolled in this prospective randomised clinical trial. CXL with subsequent PRK after 6 months was performed in one eye (study group), and PRK alone was performed in contralateral eyes (control group). Patients were followed for 24 months after PRK...
April 2, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29582259/corneal-densitometry-after-accelerated-corneal-collagen-cross-linking-in-progressive-keratoconus
#12
Myriam Böhm, Mehdi Shajari, Matthias Remy, Thomas Kohnen
PURPOSE: To analyze changes in corneal densitometry 3 months after accelerated corneal collagen cross-linking (CXL) measured with Scheimpflug tomography. METHODS: In this study we reviewed charts and anterior segment data of patients who had undergone accelerated pulsed epithelium-off CXL (30 mW/cm2 for 4 min, 8 min total radiation time) for treatment of progressive keratoconus in the Department of Ophthalmology, Goethe University, Frankfurt, Germany. Visual, topographic, pachymetric and densitometric data were extracted before surgery and at the 3-month follow-up...
March 26, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29576880/three-year-outcomes-of-cross-linking-plus-combined-cross-linking-with-femtosecond-laser-intracorneal-ring-segments-implantation-for-management-of-keratoconus
#13
Mohammed Iqbal Hafez Saleem, Hosam A Ibrahim Elzembely, Mortada Ahmed AboZaid, Mohammed Elagouz, Ahmed Mohamed Saeed, Osama Ali Mohammed, Ahmed Gad Kamel
Purpose: To analyze the results of three-year outcomes of combined epithelium-on cross-linking with femtosecond laser ICRS (cross-linking PLUS) for keratoconus management. Design: A retrospective multicenter clinical study. Methods: 43 eyes of 38 patients were subjected to preoperative and postoperative UCVA, BCVA, refraction, Pentacam pachymetry, and keratometry examinations at 3-, 6-, 12-, 24-, and 36-month follow-up period. Results: The preoperative and postoperative mean UCVA was 1...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29566542/comparative-evaluation-of-scheimpflug-tomography-parameters-between-thin-non-keratoconic-subclinical-keratoconic-and-mild-keratoconic-corneas
#14
Samira Huseynli, José Salgado-Borges, Jorge L Alio
PURPOSE: To evaluate and compare the topographic and topometric parameters, thickness profile data, and data from enhanced elevation maps of thin non-keratoconic, subclinical keratoconic, and mild keratoconic corneas with the Pentacam Scheimpflug corneal tomography and to study the usefulness of different parameters to differentiate keratoconus from topographically normal thin corneas. METHODS: The study included 30 eyes with subclinical keratoconus, 30 eyes with mild-stage keratoconus, and 54 healthy eyes with minimal pachymetry ≤500 µm, with a mean age of 21...
March 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29564805/comparison-of-central-corneal-thickness-measurements-by-ultrasound-pachymetry-and-2-new-devices-tonoref-iii-and-rs-3000
#15
Thomas Desmond, Patricia Arthur, Kathleen Watt
PURPOSE: There is currently little evidence assessing the repeatability and accuracy of central corneal thickness measurements using the devices Tonoref III and RS-3000. This study aims to compare these devices against measurements by ultrasound pachymetry. METHODS: Central corneal thicknesses were measured on 50 eyes. Measurements from two non-contact devices-Tonoref III (NIDEK CO., LTD, Gamagori, Japan) and RS-3000 (NIDEK CO., LTD, Gamagori, Japan)-were compared against ultrasound pachymetry, the gold standard...
March 21, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29564411/comparison-of-okulix-ray-tracing-software-with-srk-t-and-hoffer-q-formula-in-intraocular-lens-power-calculation
#16
Mohammad Ghoreyshi, Ahmadreza Khalilian, Mohammadreza Peyman, Mohaddeseh Mohammadinia, Alireza Peyman
Purpose: To compare the performance of OKULIX ray-tracing software with SRK-T and Hoffer Q formula in intraocular lens (IOL) power calculation in patients presenting with cataract. Methods: In this prospective study, 104 eyes of 104 patients with cataract who underwent phacoemulsification and IOL implantation were recruited. Three IOL brands were used and for all eyes, IOL power calculation was performed using SRK-T, Hoffer Q formula and also OKULIX ray-tracing software...
March 2018: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/29557816/outcomes-of-hemi-descemet-membrane-endothelial-keratoplasty-for-fuchs-endothelial-corneal-dystrophy
#17
Rénuka S Birbal, Shugi Hsien, Vasiliki Zygoura, Jack S Parker, Lisanne Ham, Korine van Dijk, Isabel Dapena, Lamis Baydoun, Gerrit R J Melles
PURPOSE: To report the mid-term outcomes of hemi-Descemet membrane endothelial keratoplasty (hemi-DMEK) performed for Fuchs endothelial corneal dystrophy (FECD). METHODS: In this prospective, interventional case series, we evaluated clinical outcomes of 10 eyes from 10 patients who underwent hemi-DMEK for FECD. Main outcome measures were best-corrected visual acuity (BCVA), endothelial cell density (ECD), central pachymetry, and postoperative complications. RESULTS: At 1 year postoperatively, 7/7 eyes (excluding 2 eyes with low visual potential) reached a BCVA of ≥20/40 (≥0...
March 19, 2018: Cornea
https://www.readbyqxmd.com/read/29549461/assessment-of-corneal-backward-light-scattering-in-the-healthy-cornea-and-factors-affecting-corneal-transparency
#18
Ali Bulent Cankaya, Kemal Tekin, Hasan Kiziltoprak, Sevilay Karahan, Pelin Yilmazbas
PURPOSE: To quantify normative corneal optical density (COD) values of healthy individuals and to investigate alterations in the COD in relation to their ocular and demographic characteristics. STUDY DESIGN: Prospective, cross-sectional, and observational. METHODS: In total, 588 eyes from 588 healthy participants with clear corneas were consecutively enrolled. Corneal densitometry values expressed in standardized grayscale units (GSU) from different corneal layers and zones obtained using the rotating Pentacam Scheimpflug system were analyzed...
May 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29545951/effect-of-hemifacial-spasm-on-intraocular-pressure-measurement
#19
Erdogan Cicik, Rengin Yildirim, Ceyhun Arici, Funda Dikkaya, Osman Sevki Arslan
Purpose: To evaluate the effect of hemifacial spasm (HFS) on intraocular pressure (IOP) measurement. Methods: Twenty-four consecutive patients with HFS and 25 age- and gender-matched randomly selected eyes of healthy volunteers underwent corneal pachymetry and IOP measurements using Goldmann applanation tonometer (GAT) and noncontact tonometer (NCT). IOP measurements were performed before (during HFS) and 2 weeks after Botox injections in HFS patients and in healthy volunteers without Botox injections...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29543194/-strength-properties-of-rabbit-cornea-after-femtosecond-laser-keratoplasty-with-and-without-different-intracorneal-implants
#20
N P Pashtaev, N A Pozdeeva, V V Zotov, M V Sinitsyn, M A Shcheglova
AIM: to conduct a comparative experimental study of the effect of the use of intracorneal implants during femtosecond laser-assisted intrastromal pocket (IP) and intrastromal tunnel (IT) formation on the strength properties of the cornea. MATERIAL AND METHODS: The experimental study was performed on 24 corneas of 12 rabbit eyes enucleated 1 month after slaughtering. All eyes were divided into 6 groups according to the method of operation. IP and IT were created with IntraLase FS 60 kHz femtolaser...
2018: Vestnik Oftalmologii
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