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Aberrometry

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https://www.readbyqxmd.com/read/29623732/clinical-outcome-and-higher-order-aberrations-after-bilateral-implantation-of-an-extended-depth-of-focus-intraocular-lens
#1
Daniel Pilger, David Homburg, Tobias Brockmann, Necip Torun, Eckart Bertelmann, Christoph von Sonnleithner
PURPOSE: The purpose of this study was to assess the clinical outcome after a bilateral implantation of an extended depth of focus intraocular lens in comparison to a monofocal intraocular lens. SETTING: Department of Ophthalmology, Charité-Medical University Berlin, Germany. PATIENTS AND METHODS: A total of 60 eyes of 30 patients were enrolled in this prospective, single-center study. The cataract patients underwent phacoemulsification with bilateral implantation of a TECNIS® Symfony (Abbott Medical Optics, Santa Ana, CA, USA, 15 patients) or a TECNIS Monofocal ZCB00 (Abbott Medical Optics, Santa Ana, CA, USA, 15 patients)...
April 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29615280/comparison-of-ocular-wavefront-aberrations-in-subluxated-lenses-before-and-after-lens-extraction-with-intraocular-lens-implantation
#2
Samaresh Srivastava, Vaishali Vasavada, Viraj Vasavada, Shail Vasavada, Mamidipudi R Praveen, Rajendra Reddy, Abhay R Vasavada
PURPOSE: To compare the change in ocular higher-order wavefront aberrations (HOAs), visual acuity, and modulation transfer function (MTF) after lens extraction with intraocular lens (IOL) implantation in patients with subluxated lenses. SETTING: Iladevi Cataract & IOL Research Centre, Ahmedabad, India. DESIGN: Prospective case series. METHODS: Eyes with subluxated lenses having lens extraction with IOL implantation were included...
March 31, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29610222/two-year-follow-up-of-corneal-cross-linking-and-refractive-surface-ablation-in-patients-with-asymmetric-corneal-topography
#3
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/29607433/effect-of-trabeculectomy-on-ocular-higher-order-aberrations-in-patients-with-open-angle-glaucoma
#4
Ali Mahdavi Fard, Rana Daei Sorkhabi, Kamal Nasiri, Arezou Tajlil
OBJECTIVE: The aim of this study was to evaluate the effect of trabeculectomy on ocular higher-order aberrations following surgery in a group of patients with open angle glaucoma. METHODS: In this prospective study, patients with primary open angle glaucoma underwent wavefront aberrometry before trabeculectomy with mitomycin-C. Coma-like, spherical-like, and total ocular higher-order aberrations were measured as root mean square values. The measurements were repeated 1 month and 3 months after the procedure...
2018: Northern Clinics of Istanbul
https://www.readbyqxmd.com/read/29573863/-comparison-of-objective-optical-quality-measured-by-double-pass-aberrometry-in-patients-with-moderate-dry-eye-normal-saline-vs-artificial-tears-a-pilot-study
#5
G Vandermeer, Y Chamy, P-J Pisella
Dry eye is defined by a tear film instability resulting in variable but systematic fluctuations in the quality of vision. Variability in optical quality can be demonstrated using a double pass aberrometer such as the OQAS (Optical Quality Analyzing System, Visiometrics). The goal of this work is to compare fluctuations in objective quality of vision measured by OQAS between treatment with normal saline eye drops and treatment with carmellose 0.5% and hyaluronic acid 0.1% (Optive Fusion [OF], Allergan) in patients with moderate dry eye syndrome...
March 21, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29564410/opd-scan-iii-accuracy-topographic-and-aberrometric-indices-after-accelerated-corneal-cross-linking
#6
Soheila Asgari, Hassan Hashemi
Purpose: To determine topographic and aberrometric changes after accelerated cross-linking (ACXL; 18 mW/cm2 for 5 min) as measured with OPD Scan III (Nidek Inc., Tokyo, Japan) and their repeatability in patients with mild and moderate keratoconus (KCN). Methods: In this prospective study, 25 eyes with mild KCN [Ksteep = 47.24 ± 3.11 diopter (D)] and 20 moderate cases (Ksteep = 52.86 ± 4.39 D) were examined under mesopic conditions (20 lux) twice, 30-45 min apart, at baseline and 6 and 12 months afterwards...
March 2018: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/29461300/intrasession-repeatability-and-intersession-reproducibility-measurements-using-vx120-multidiagnostic-unit
#7
Irene Sanchez, Sara Ortiz-Toquero, Raul Martin
OBJECTIVE: The VX120 multidiagnostic unit is a multidiagnostic instrument that combines several functions: autorefraction, keratometry, corneal topography, aberrometry, pachymetry, and noncontact tonometry. The purpose of this study was to determine the intrasession repeatability and the intersession reproducibility of all parameters measured by the VX120 multidiagnostic unit in a sample of normal healthy eyes. METHODS: Three repeated measurements in the right eye of the volunteers were taken with VX120...
February 15, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29425390/corneal-apical-scar-after-hyperopic-excimer-laser-refractive-surgery-long-term-follow-up-of-treatment-with-sequential-customized-therapeutic-keratectomy
#8
Paolo Vinciguerra, Fabrizio I Camesasca, Emanuela Morenghi, Claudio Azzolini, Luca Pagano, Silvia Trazza, Riccardo Vinciguerra
PURPOSE: To evaluate long-term results of sequential customized therapeutic keratectomy (SCTK) in highly aberrated corneas with apical scars consequent to hyperopic excimer laser refractive surgery. METHODS: Fifteen eyes of 12 patients treated with SCTK for a corneal apical scar after hyperopic excimer laser refractive surgery were retrospectively evaluated. SCTK is a sequence of custom therapeutic excimer laser keratectomies where the results are monitored step-by-step by intraoperative corneal topography...
February 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29417087/fundamentals-of-presbyopia-visual-processing-and-binocularity-in-its-transformation
#9
Olga I Rozanova, Andrey G Shchuko, Tatyana S Mischenko
Background: The accommodation has considerable interactions with the pupil response, vergence response and binocularity. The transformation of visual reception processing and the changes of the binocular cooperation during the presbyopia development are still poorly studied. So, the regularities of visual system violation in the presbyopia formation need to be characterized. This study aims to reveal the transformation of visual reception processing and to determine the role of disturbances in binocular interactions in presbyopia formation...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29398334/visual-quality-with-corneo-scleral-contact-lenses-for-keratoconus-management
#10
Juan Carlos Montalt, Esteban Porcar, Enrique España-Gregori, Cristina Peris-Martínez
PURPOSE: To assess the visual quality achieved by fitting corneo-scleral contact lenses (CScL) for keratoconus management. METHODS: Thirty patients with keratoconus presented to have CScL fitted because of the unsatisfactory visual quality they experienced with their contact lenses or spectacles. The eye examination included visual acuity assessment, anterior eye biomicroscopy, ocular fundus examination, corneal topographic analysis, endothelial-cell count, contrast sensitivity and aberrometry...
February 2, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29377842/effects-of-lipid-versus-sodium-hyaluronate-containing-eye-drops-on-optical-quality-and-ocular-surface-parameters-as-a-function-of-the-meibomian-gland-dropout-rate
#11
Kata Miháltz, Eva Maria Faschinger, Pia Veronika Vécsei-Marlovits
PURPOSE: To evaluate the effect of lipid- versus sodium hyaluronate-based eye drops on optical quality and ocular surface parameters. METHODS: Sixty eyes of 30 patients with mild-to-moderate dry eye disease were included in a prospective randomized study. Each patient received either lipid- or sodium hyaluronate-based eye drops. Ocular symptom scores, breakup time, Schirmer test, fluorescein staining, noncontact meibography, and aberrometry were evaluated before and after 3 months of therapy...
January 25, 2018: Cornea
https://www.readbyqxmd.com/read/29366588/comparison-of-objective-optical-quality-measured-by-double-pass-aberrometry-in-patients-with-moderate-dry-eye-normal-saline-vs-artificial-tears-a-pilot-study
#12
G Vandermeer, Y Chamy, P-J Pisella
Dry eye is defined by a tear film instability resulting in variable but systematic fluctuations in quality of vision. Variability in optical quality can be demonstrated using a double pass aberrometer such as the Optical Quality Analyzing System, Visiometrics (OQAS). The goal of this work is to compare fluctuations in objective quality of vision measured by OQAS between treatment with normal saline eye drops and treatment with carmellose 0.5% and hyaluronic acid 0.1% (Optive Fusion [OF], Allergan) in patients with moderate dry eye syndrome...
February 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29360197/clinical-outcomes-with-distance-dominant-multifocal-and-monofocal-intraocular-lenses-in-post-lasik-cataract-surgery-planned-using-an-intraoperative-aberrometer
#13
Bret Fisher, Rick Potvin
IMPORTANCE: Studies evaluating the clinical benefits of intraoperative aberrometry (IA) in cataract surgery are limited. BACKGROUND: The study was designed to determine whether IA improved clinical outcomes of post-laser in situ keratomileusis (LASIK) cataract surgery with different intraocular lenses (IOLs) implanted. DESIGN: A retrospective chart review of clinical outcomes from one surgeon at one surgical centre was conducted. It included post-LASIK cataract surgeries where IA was used for the confirmation of IOL power, with either a distant-dominant multifocal IOL or a monofocal IOL implanted...
January 23, 2018: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/29226128/amplitude-latency-and-peak-velocity-in-accommodation-and-disaccommodation-dynamics
#14
Antonio J Del Águila-Carrasco, José J Esteve-Taboada, Eleni Papadatou, Teresa Ferrer-Blasco, Robert Montés-Micó
The aim of this work was to ascertain whether there are differences in amplitude, latency, and peak velocity of accommodation and disaccommodation responses when different analysis strategies are used to compute them, such as fitting different functions to the responses or for smoothing them prior to computing the parameters. Accommodation and disaccommodation responses from four subjects to pulse changes in demand were recorded by means of aberrometry. Three different strategies were followed to analyze such responses: fitting an exponential function to the experimental data; fitting a Boltzmann sigmoid function to the data; and smoothing the data...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29219897/management-of-complex-epithelial-ingrowth-after-laser-in-situ-keratomileusis-using-fibrin-tissue-glue
#15
Lisa Y Chen, Jennifer S Kung, Edward E Manche
OBJECTIVES: To evaluate the efficacy and safety of adjunctive fibrin tissue glue in the treatment of complex epithelial ingrowth after laser in situ keratomileusis (LASIK). METHODS: A retrospective review was performed of 12 eyes in 12 patients treated for clinically significant epithelial ingrowth after LASIK with mechanical debridement of the ingrowth and placement of fibrin tissue glue. Primary outcome measurements including recurrence of ingrowth, visual acuity, and manifest refraction were evaluated at each postoperative examination...
December 5, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/29215394/visual-outcomes-and-aberrometric-changes-with-topography-guided-photorefractive-keratectomy-treatment-of-irregular-astigmatism-after-penetrating-keratoplasty
#16
Francisco Bandeira E Silva, Rossen Mihaylov Hazarbassanov, Eduardo Martines, José Luis Güell, Ana L Hofling-Lima
PURPOSE: To evaluate the visual acuity and keratometric and aberrometric changes in patients with corneal transplants (PKP), who underwent topography-guided photorefractive keratectomy (TG-PRK) with mitomycin C (MMC). METHODS: In this case study, 15 patients with spherical equivalents ranging from -11.00 to -0.25 diopters (D) who underwent penetrating corneal transplantation and had irregular astigmatism ranging from -7.5 to -2.0 D underwent TG-PRK with MMC. Corneal topography and wavefront of all patients were measured preoperatively and 12 months postoperatively...
March 2018: Cornea
https://www.readbyqxmd.com/read/29208810/optimizing-outcomes-with-toric-intraocular-lenses
#17
REVIEW
Manpreet Kaur, Farin Shaikh, Ruchita Falera, Jeewan S Titiyal
Toric intraocular lenses (IOLs) are the procedure of choice to correct corneal astigmatism of 1 D or more in cases undergoing cataract surgery. Comprehensive literature search was performed in MEDLINE using "toric intraocular lenses," "astigmatism," and "cataract surgery" as keywords. The outcomes after toric IOL implantation are influenced by numerous factors, right from the preoperative case selection and investigations to accurate intraoperative alignment and postoperative care...
December 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29185116/standard-transepithelial-and-iontophoresis-corneal-cross-linking-clinical-analysis-of-three-surgical-techniques
#18
Settimio Rossi, Carmine Santamaria, Rosa Boccia, Luigi De Rosa, Francesco Maria D'Alterio, Francesca Simonelli, Giuseppe De Rosa
BACKGROUND: To evaluate the clinical results of standard, transepithelial (TE) and iontophoresis (I) corneal cross-linking (CXL), in patients with progressive keratoconus. METHODS: Thirty eyes of 30 patients with progressive keratoconus treated by CXL (10 by standard-CXL, 10 by TE-CXL and 10 by I-TE-CXL) with 12 months of follow-up. Pre- and postoperative ophthalmologic testing were: uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive examination (spherical error, spherical equivalent), corneal topography (corneal astigmatism, simulated maximum, minimum and average keratometry), aberrometry (coma and spherical aberration), pachymetry and endothelial cell density...
November 28, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29146479/visual-outcome-of-penetrating-keratoplasty-deep-anterior-lamellar-keratoplasty-and-descemet-membrane-endothelial-keratoplasty
#19
Clàudia Garrido, Genís Cardona, Josep L Güell, Jaume Pujol
PURPOSE: A single-center, cross-sectional study was designed to assess and compare objective and subjective quality of vision of patients intervened with penetrating keratoplasty (PK), deep anterior lamellar keratoplasty (DALK) and Descemet membrane endothelial keratoplasty (DMEK). METHODS: Forty-six patients previously intervened with PK (22 eyes), DALK (7 eyes) and DMEK (17 eyes) were recruited. Visual evaluation included spherical and cylindrical refraction, distance corrected visual acuity (DCVA), photopic contrast sensitivity (CS), optical quality, measured with the HD Analyzer (objective scattering index [OSI], MTF cut-off and Strehl ratio), and ocular and corneal aberrometry, measured with the KR-1W Wavefront Analyzer...
November 13, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/29117417/repeatability-of-a-commercially-available-adaptive-optics-visual-simulator-and-aberrometer-in-normal-and-keratoconic-eyes
#20
Rohit Shetty, Shruti Kochar, Tushar Grover, Pooja Khamar, Pallak Kusumgar, Kanchan Sainani, Abhijit Sinha Roy
PURPOSE: To evaluate the repeatability of aberration measurement obtained by a Hartmann-Shack aberrometer combined with a visual adaptive optics simulator in normal and keratoconic eyes. METHODS: One hundred fifteen normal eyes and 92 eyes with grade I and II keratoconus, as per the Amsler-Krumeich classification, were included in the study. To evaluate the repeatability, three consecutive measurements of ocular aberrations were obtained by a single operator. Zernike analyses up to the 5th order for a pupil size of 4...
November 1, 2017: Journal of Refractive Surgery
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