Results 91 to 100 of about 2,292 (192)

Wavefront Changes during a Sustained Reading Task in Presbyopic Eyes

Sensors
The objective of this study was to assess the effect of sustained reading on the temporal changes in the wavefront error in the presbyopic eye. The wavefront aberration of the eyes was measured using an IRX3 Shack–Hartmann aberrometer before and after ...
Ebrahim Safarian Baloujeh, José M. González-Méijome   +1 more
doaj   +1 more source

Effect of Wavefront Autorefractor Design on Cycloplegic Refraction in Young Hyperopes: Monocular vs. Binocular

Photonics
Objectives: To compare the objective refraction of young hyperopes obtained by two wavefront autorefractors with identical measurement principles but different optical designs: a monocular closed-field (VX 120) and a binocular open-field (Eye Refract ...
Gonzalo Carracedo, Carlos Carpena-Torres, Cristina Pastrana, Maria Rodríguez-Lafora, Ana Privado-Aroco, María Serramito, Laura Batres   +6 more
doaj   +1 more source

Preclinical cataract masquerading as post-LASIK regression

Oman Journal of Ophthalmology, 2016
The purpose of this case report is to bring forth a rare clinical scenario where preclinical cataract mimics post-LASIK regression and to describe the role of aberrometry in detecting higher order aberrations (HOAs) and early lens changes.
Rohit Shetty, Nikhil Negalur, Mathew Kurian, Rushad Shroff   +3 more
doaj   +1 more source

Aberrometric analysis and visual results of patients undergoing Transepithelial photorefractive keratectomy: Safety, effectiveness, and optical quality

The Pan-American Journal of Ophthalmology
Background: Transphotorefractive keratectomy (tPRK) is an evolving surface ablation technique for the correction of myopia that avoids flap-related complications while aiming to provide excellent refractive outcomes.
Carlos Eduardo X. Da Cunha, Stéphanie Pessoa Regueira, Isabela A. Vilela, Fernando A. C. B. Carvalho Neto, Marilia Leal Oliveira, Camila V. Ventura, Emerson I. Morishita, Camila De Moraes Costa Barros   +7 more
doaj   +1 more source

Corneal Astigmatism Measurements Comparison among Ray-Tracing Aberrometry, Partial Coherence Interferometry, and Scheimpflug Imaging System

, 2020
Purpose. To investigate interdevice agreement among corneal topography/ray-tracing aberrometry (iTrace), partial coherence interferometry (IOLMaster), and Scheimpflug imaging (Pentacam) for the measurement of corneal astigmatism. Methods.
Maolong Tang, Bin Sun, Suhua Zhang, Yaqin Zhang, Xiaoliang Wang, Jing Dong, Xiaogang Wang   +6 more
core   +1 more source

Estudio topoaberrométrico en Lasik después de queratotomía radial Topoaberrometric study in Lasik after radial keratotomy

Revista Cubana de Oftalmología, 2007
La cirugía refractiva personalizada consiste en adecuar el tratamiento de cada paciente según las características de la córnea y corregir defectos que afectan la calidad de la visión; por ejemplo, las aberraciones ópticas.
Yamila Díaz Parra, Raúl G. Pérez Suárez, Aléy Hernández Hurtado, Rosa S. Veras Gamisans, Xiomara Casas, Obel García Báez   +5 more
doaj  

Epithelial Remodeling and Epithelial Wavefront Aberrometry after Spherical vs. Cylindrical Myopic Small Incision Lenticule Extraction (SMILE)

Background/Objectives: To compare the epithelial thickness changes and the changes in epithelial wavefront aberrometry following spherical versus astigmatic myopic small incision lenticule extraction (SMILE).
Barbara S. Brunner, Nikolaus Luft, Lukas Feldhaus, Martin Dirisamer, Wolfgang J. Mayer, Jakob Siedlecki, Siegfried G. Priglinger, Stefan Kassumeh   +7 more
core   +1 more source

Los sistemas de imágenes de alta tecnología en la cirugía de catarata

Revista Cubana de Oftalmología
La cirugía de catarata actual se ha convertido en una cirugía refractiva, pues se busca además la corrección del defecto refractivo tanto esférico como cilíndrico en el mismo proceder y, por tanto, la emetropía sin corrección óptica en todas las ...
Yoriel Cuan Aguilar, Eric Montero Díaz, Judith Álvarez Martínez, Eneida Pérez Candelaria, Taimi Cárdenas Díaz, Iraisi F Hormigó Puertas   +5 more
doaj  

Measuring the retinal thickness with Shack-Hartmann aberrometry in vivo

, 2018
Darbs uzrakstīts latviešu valodā uz 30 lappusēm, satur 26 attēlus, 3 pielikumu, 24 atsauces uz literatūras avotiem. Darba mērķis: izpētīt Šaka- Hartmana aberometrijas pielietojumu tīklenes biezuma mērījumiem. Pētījuma dalībnieki: 10 cilvēki.
Burtina, Evija
core  

Comparison of refractive assessment using Hartmann-Shack and ray-tracing wavefront aberrometry, autorefraction, and subjective refraction

Background: Accurate objective assessment of refractive error is essential for efficient clinical refraction and optimal spectacle prescription, particularly with the growing use of wavefront-based technologies in contemporary ophthalmic practice.
Rahul Roy, Kamal Thakur, Sharath Narayan Sapaliya, Rabindra Thapa   +3 more
core   +1 more source